The violinist who was told at the gate that her case was "slightly too big" did nothing wrong. The guitarist who booked a seat for his acoustic and then found the airline had entered it as a second passenger named "Mr Guitar" did nothing wrong either. They both just met the same invisible fact: there is no single law in Europe that tells airlines how to treat a musical instrument, so every carrier writes its own rules, and the gate agent on the day applies them with whatever mood and cabin space they have. 🎻
That is good news and bad news. The good news is that most airlines are perfectly able to carry your instrument safely, and many publish clear conditions. The bad news is that the conditions differ by centimetres, by fare type and by the exact words you type into the booking form. This guide, written for the 2026/27 travel season, gives you ten rules that hold up whichever airline you fly: how to sort your instrument into the right category, how to book a seat properly, how to prepare the instrument and the case, what to do about batteries, tools and protected materials, how to protect yourself financially, and how to behave at the gate when something goes wrong. Wherever we quote a specific airline, we quote what that airline published when we checked in October 2026 and tell you to verify it again, because these pages change more often than anyone would like.
One honest note before we start. Peli does not make guitar, violin or cello cases, and we are not going to pretend that a Peli Air 1535 is a violin case. What Peli cases do very well is carry everything around the instrument: the pedalboard, the audio interface, the laptop, the in-ear monitors, the microphones, the spare strings, the tuner, the cables. On a real trip, that "everything else" is often worth as much as the instrument and is the part most likely to be lost or crushed. We will show where a hard case earns its place in the plan. 🎸
Part one: before you book anything
1. Sort your instrument into one of four categories
Every airline policy, however it is phrased, boils down to four possible ways for an instrument to travel. Knowing which one you are aiming for decides everything that follows, including which ticket you buy.
Category A: under the seat. Small instruments such as a violin in a compact case, a ukulele, a harmonica collection, a travel flute or a clarinet can usually travel as your small personal item. This is the cheapest option and the safest, because the instrument stays at your feet for the whole flight. The limits are the airline's personal-item dimensions, and for many low-cost carriers those are tight. As one published example, easyJet states that an instrument up to 45 x 36 x 20 cm including its case may go under the seat in place of your small cabin bag.
Category B: overhead locker. Mid-sized instruments such as a guitar in a gig bag or a compact hard case, a viola, a trumpet case or a mandolin may be accepted in the overhead locker, normally in place of your main cabin bag. This is where most of the arguments happen, because locker space is finite and boarding is first come, first served. Wizz Air, for instance, publishes a maximum of 80 x 40 x 23 cm and 10 kg for an instrument in the cabin and requires the WIZZ Priority option on the booking; the instrument then counts as your cabin bag and no other bag may be carried alongside it. Other carriers state that the instrument must simply fit within the ordinary cabin bag allowance. The same guitar is therefore fine on one airline and a problem on another.
Category C: its own seat. A cello, a full-size guitar that will not fit the locker rules, a large hard-cased wind instrument or anything over the overhead limit can travel in the cabin only if you buy a seat for it. The instrument sits next to you, secured with the seat belt. You pay for a seat, and in most cases that seat carries no baggage allowance of its own.
Category D: the hold. A double bass, a harp, a large drum, a keyboard stage piano or a full set of cymbals will travel as checked baggage in a proper hard case, normally counting against your allowance and sometimes with an oversize fee. This is the category where the case matters most, because nobody is watching the instrument.
Decide on the category first, then look for the airline whose published rules allow it. If you are choosing between two carriers on the same route, the one that accepts your guitar in the cabin without an extra seat can be worth a noticeably higher base fare.
2. Read the airline's own instrument page, not a forum thread
The internet is full of confident statements about what "airlines allow", and most of them are out of date. Musicians' forums still circulate size limits from before several carriers changed their policies, and the dimensions on third-party aggregator sites regularly disagree with the airline's own page. Our checks for this article turned up exactly that: for one major carrier the official page and a trade site differed by several centimetres, and for another the free cabin limit for instruments was quoted differently on three websites.
So the rule is simple: the only source that counts is the airline's own page on the day you book, plus a screenshot of it that you keep. A few published examples, correct when we looked in October 2026, show how much the rules vary:
- easyJet: instruments up to 45 x 36 x 20 cm can go under the seat; larger instruments up to roughly 117 to 120 cm long and 38 cm wide (the figure differs slightly between sources, so measure against the live page) can go in the overhead locker in place of the large cabin bag; anything larger needs its own seat. The crew can still refuse an instrument they cannot stow safely.
- Ryanair: an instrument can travel in the cabin if it fits within your cabin bag allowance. Anything bigger needs an extra seat, which carries no baggage allowance, or must be checked in for a fee.
- Wizz Air: an instrument up to 80 x 40 x 23 cm and 10 kg, with WIZZ Priority on the booking, replaces your cabin bag. Larger instruments that cannot go in the hold may take a purchased seat, which must be a window seat and cannot be in the first row or an emergency exit row.
- British Airways: guitars and similar instruments are not accepted as hand baggage; they travel in the hold, or in the cabin on a seat booked at least 48 hours ahead by contacting the airline directly. A rigid case is required for carriage in the hold or on a seat.
- LOT Polish Airlines: a larger instrument can be given a cabin seat by booking a special service through the contact centre at the same time as the ticket. The airline publishes a combined-dimension limit for smaller instruments carried as hand baggage, and separate limits for the hold.
You do not need to memorise any of it. You need to notice the pattern: the airline decides, the answer lives on its own page, and the details of how you book matter as much as the dimensions.
If your trip involves an airline you have never flown, see our guides to Ryanair cabin baggage, Wizz Air hand baggage and how airlines measure baggage and when they charge fees, because an instrument is judged by exactly the same measuring frame and the same gate habits as any other bag.
3. Book the extra seat the way the airline wants it booked
Buying a seat for a cello sounds like a two-click operation. It rarely is. Airline systems are built around passengers, not objects, so the instrument usually has to be entered as an additional passenger with a specific naming convention. Ryanair, for example, has asked customers to enter a designated word as the first name and "item seat" as the surname. Wizz Air asks for a particular code as the first name. easyJet uses a dedicated format for the cello name. If you improvise, the booking may be rejected, or worse, accepted and later cancelled as a suspected duplicate passenger.
Several practical habits prevent the typical problems:
- Book the instrument seat in the same reservation as your own ticket. Some airlines, including LOT, state that the passenger ticket and the instrument service must be booked together. Third-party booking sites sometimes turn the instrument into a separate traveller with no link to you.
- Phone the airline before you pay if the website has no instrument option. British Airways, for one, takes instrument seat bookings by contact rather than online.
- Ask which seat the instrument will occupy. Window seats are the norm, and bulkhead rows and emergency exit rows are usually excluded. Ask also whether the fare for the instrument seat must match your own fare family.
- Get the confirmation in writing, including the reference of the person you spoke to, and bring it printed. A gate agent who has never seen a cello booking will believe a document faster than a story.
- Remember the seat has no baggage allowance. You are paying for space, not for a second free bag.
Boarding is where the seat pays off. Ask for early boarding so that you have time to settle the instrument. On a cello, the usual arrangement is the body resting back-first against the seat, with the belt fastened across the instrument; do not let anyone talk you into putting it in the locker.
Part two: protecting the instrument itself
4. Treat the hard case as a condition of carriage, not an accessory
When the airline writes "rigid case required", it means it. British Airways states that a guitar must be packed in a rigid guitar case or it will not be accepted as checked baggage, either in the hold or on its own seat. Other carriers recommend a hard case without strictly requiring it, and a gig bag that is perfectly acceptable in the overhead locker is a very different proposition at the bottom of a baggage cart.
The decision rule is easy. If the instrument could ever end up in the hold, whether by plan, by overbooked locker or by a gate agent's decision, it should travel in a case that survives being dropped, stacked under other bags and rained on during the walk to the aircraft. A soft bag is for the instrument that will never leave your hands. For anything valuable, the question is not whether the hard case is worth the weight but whether you accept the risk of the alternative.
Check the case's fit, too. A loose instrument is a damaged instrument. The neck of a guitar should be supported so that it cannot flex under a blow, and there should be no more than a thumb's width of free movement in any direction. Fill gaps with soft, clean material: a folded cloth or a purpose-made support, never anything abrasive or containing moisture. Close and lock every latch, and make sure the handle is sound; a handle that fails in the terminal takes your instrument with it.
5. Prepare the instrument for cold, dry air and pressure
Wooden instruments dislike three things on a flight: rapid temperature change, very low humidity and mechanical shock. You cannot control the cabin, but you can control what you do before you leave home.
Strings. Many luthiers advise loosening the strings of a guitar slightly before flying, so that the neck is not under full tension if the instrument is knocked or goes through a big temperature swing. Do not slacken them completely; losing all tension on some instruments can allow the bridge or the soundpost to move. For bowed instruments, follow your maker's advice, and for a violin or viola remove the shoulder rest so the case lid sits flat and the back is not pressed. Bring the bow tension to its relaxed setting and keep bows in their own protected compartment.
Humidity. Cabin air is dry, and a hold is not a controlled environment. A small humidity pack placed in the case for the journey is cheap insurance for a valuable wooden instrument. After landing, let the case acclimatise for a while before opening it. Opening a cold case in a warm room can lead to condensation and, on lacquered instruments, to finish cracking.
Cold. Modern passenger aircraft normally carry the hold pressurised and temperature controlled, but the ground time between a cold apron and the aircraft is real, especially in winter. Instruments that have been exposed to freezing temperatures should not be played or retuned immediately. Give them time.
Pegs, pins and loose parts. Remove or pad anything that sticks out: a cello endpin should be retracted and capped, detachable parts of a saxophone or trombone secured, and the spare mouthpiece kept out of the instrument's body where it could dent the bore. Photograph everything before you close the case. Those photographs are worth more than any wording of a claim form later.
6. Pack the accessory kit separately, and carry it with you
A working musician rarely travels with the instrument alone. There is the pedalboard or a compact multi-effects unit, the interface and the laptop, the in-ear monitors, the clip-on tuner, the capo, spare strings, reeds, valve oil, a small tool kit, cables, adapters, a wireless system and a handful of batteries. If that kit lives loose in the instrument case, every item adds risk to the instrument and every inspection becomes a full unpack at the security belt.
Keep the instrument case for the instrument and put everything else in a second hard case that travels in the cabin. A cabin hard case of the Peli Air 1535 or Peli 1510 type is built to stack, drop and be squeezed into a locker without flexing. A lid organiser holds cables, a tuner and small items in sight; a laptop lid organiser carries the computer upright where it can be pulled out for screening in seconds; dividers keep pedals, an interface and in-ear monitors from knocking into one another. And if the airline counts the instrument as your one cabin bag, the accessory case is the one you may have to check, so choose a size that suits that role as well. The most compact solution is a carry-on case such as the Peli ATX HC22, which meets common cabin dimensions while giving you a rolling, lockable shell.
Think of the accessory case as the "if the worst happens" case. If your instrument is taken at the gate and goes into the hold, the accessory case should still be able to travel with you, and the things you cannot replace on the day of the show are in it.
Grab and go: cabin hard cases for the kit around the instrument
Part three: security, paperwork and money
7. Know what the security lane will question: batteries, tools and small accessories
Musicians carry two kinds of item that regularly stop a bag at security: batteries and anything with an edge.
Batteries. Spare lithium batteries, including the ones inside wireless microphone packs, in-ear monitor transmitters, pedal power banks and portable audio interfaces, are generally cabin-only under the international dangerous goods rules that airlines follow. As a rule of thumb described in IATA-aligned guidance, spare batteries up to 100 Wh go in the cabin bag, protected against short circuits; spares between 100 and 160 Wh need the airline's approval and are limited to two per person; anything above 160 Wh does not fly on a passenger aircraft. Tape the terminals or keep each battery in its own pouch. A compact power bank that sits in the accessory case is easy to show; one buried in the instrument case is not. Our guide to power banks in carry-on baggage covers the limits in more detail. Check your own airline's dangerous goods page, as some carriers add their own restrictions.
Edges and tools. String cutters, small pliers, peg winders with sharp parts, hex keys, tuning wrenches, reed knives, bow-hair scissors and soldering tools are the typical trouble makers. Security rules differ by country and the officer on duty decides. The simple policy is to put anything that looks like a tool in the hold luggage and keep in the cabin only soft goods: strings, reeds, cloths, picks, capos, clip-on tuners.
The instrument itself. Expect a swab, an X-ray and sometimes a request to open the case. Be calm and courteous, ask the officer to handle the instrument by the case and not by the neck, and offer to open the case yourself. Do not let anyone lift a violin out by the scroll. An accessory case that is already organised, with items visible in a lid organiser and a laptop that comes out in one movement, makes this process shorter and keeps a calm tone.
8. Check the materials: some instruments need paperwork, and the paperwork matters
This rule applies to a minority of travellers, but those it affects can lose an instrument to a customs seizure. Certain tonewoods and decorative materials are protected under CITES, the international agreement on trade in endangered species. Brazilian rosewood (Dalbergia nigra) is listed in the strictest category and an instrument containing it normally needs a musical instrument certificate to cross a border. Other rosewoods in the Dalbergia genus were brought under CITES controls in 2017, with an exemption for non-commercial personal use that is expressed as a weight of wood, not of the whole instrument. Older bows can have ivory tips or tortoiseshell frogs, and those are covered too.
The practical consequence: if your instrument or bow is old, expensive or made of unusual materials, ask the maker, the dealer or a luthier what it contains, and ask your national CITES management authority whether a certificate is required for your route. The sources we found for the personal-use exemption date from between 2013 and 2019 and the exemption is interpreted differently from country to country, so we do not repeat specific thresholds here. Bring your documents, a declaration of materials from the maker if one exists, and a proof of ownership. Border officers deal with this in minutes when they can see the paper, and in days when they cannot.
9. Know how little the airline owes you if the instrument is broken, and insure accordingly
For international flights, the Montreal Convention caps an airline's liability for baggage damage, loss or delay per passenger. Since 28 December 2024 the limit has been 1,519 Special Drawing Rights, which ICAO described as around two thousand US dollars; the exact figure in euros or złoty moves with exchange rates. That is far below the value of many professional instruments. Domestic flights and some regions apply their own limits, and the way the revised amount is implemented can depend on national law.
Many carriers also state in their conditions of carriage that they limit or exclude liability for fragile or valuable items checked into the hold, and instruments commonly appear on that list. Read the conditions of your airline before relying on a claim. The practical protections are these:
- Specialist instrument insurance. A policy that covers transit, including airlines, is the only real answer for a valuable instrument. Check that it covers the hold, a gate-checked instrument and a cabin seat.
- Declared value, where offered. Some carriers sell excess valuation for baggage. Ask whether it covers an instrument.
- Evidence. Keep receipts, a valuation certificate, photographs of the instrument and the case, and the boarding documents showing the booking you made for it.
- Immediate reporting. Damage must be reported in writing within a short window after receipt of baggage, and the Convention sets a deadline measured in days. Do not leave the airport without a written damage report, even if the instrument "seems fine" and you plan to check it properly later. Our guide to filing a claim for lost luggage explains the process, and the article on what really happens to your suitcase after check-in shows why a hold journey is rougher than most people imagine.
If you fly to the United States, note that the US Department of Transportation has a specific rule for instruments on US carriers: a larger instrument may be carried in the cabin if you buy it a seat and it weighs no more than 165 pounds, and an instrument that cannot go in the cabin must be accepted as checked baggage if it is within 150 linear inches and 165 pounds, with the airline allowed to charge only the ordinary oversize fees and not an extra fee because the item is an instrument. We are not aware of an equivalent single rule that applies across the European Union, which is exactly why the airline-by-airline checking in rule 2 matters.
Checked bags and bigger cases for the road: when the tour kit goes in the hold
Part four: the airport
10. Handle the gate like a procedure, not a negotiation
Most instrument problems are not caused by rules; they are caused by the moment a gate agent sees something unfamiliar with a queue of passengers behind it. You cannot remove that pressure, but you can prepare for it.
Arrive early and go to check-in, not straight to the gate, if the instrument is anything but a small case. Show the instrument, the booking and the printed policy. Ask the agent to tag the item as needed and to confirm in the system that it is cleared for the cabin. An approval given at check-in is much harder to reverse at the gate.
Use priority boarding if it makes the difference. Locker space is allocated by boarding order, and for carriers that require a priority option for cabin instruments, it is not a luxury. For lockers on low-cost flights, a few euros for early boarding is often cheaper than the cost of the alternative.
If the instrument must be checked at the gate, do the following in order. Ask for a "fragile" or "limited release" tag, and ask that the instrument be handed over at the aircraft door or at the oversize belt on arrival, not sent to the main carousel. Remove everything of value from the case: the accessory kit, the bow if it is separate, the laptop, the batteries, the documents. Photograph the instrument in its case and the tag. Request a written note of the circumstances, in case you need to show later that you booked the correct service and were refused carriage. Ask for the name of the supervisor.
If the answer is still no, remain polite and keep records. Complaints that cite the booking, the policy and a record of what the agent said are far more effective than angry ones, and airlines tend to respond to well-documented cases. If an instrument seat you paid for is refused, ask the airline in writing for a refund of that seat and for the reason; what you can claim depends on the carrier's conditions of carriage and on the jurisdiction, so read them before you write.
The same procedural calm helps in the smaller moments: a locker that is already full, a flight attendant who asks for the case to be placed under a seat, a cabin crew member who needs the aisle. It is much easier to be helpful when you have a plan for each of those situations before the doors close. For disruptions that change the whole trip, such as a cancellation, see our checklist for the first hour after a cancelled flight; the instrument is still your responsibility while the airline reorganises your journey.
Your pre-flight checklist for a musical instrument
Print this, or keep it as a note on your phone:
- Decide the category: under the seat, overhead locker, its own seat or the hold.
- Check the airline's own instrument page on the day of booking and take a screenshot. Measure the case, including handles and wheels.
- Book the extra seat correctly, in the same reservation, with written confirmation. Phone if the website has no option.
- Buy priority boarding where the airline requires it or where locker space is tight.
- Use a rigid case for anything that could go in the hold; check that the fit is snug and the latches and handle are sound.
- Loosen strings slightly where your maker recommends, remove the shoulder rest, retract the endpin, add a humidity pack.
- Photograph the instrument, the case and the serial number before closing the lid.
- Move batteries, cables, laptop and valuables into a separate cabin hard case; protect spare lithium batteries against short circuits.
- Put tools, cutters and anything sharp into hold luggage.
- Check protected materials and carry any certificate, declaration or proof of ownership.
- Arrange specialist instrument insurance that covers air transit.
- Arrive early; go to check-in with the booking printed.
- If checked at the gate, request a fragile tag, empty the case of valuables and photograph everything.
- Report any damage in writing before leaving the airport.
Frequently asked questions
Can I take a guitar as hand luggage?
Sometimes. It depends entirely on the airline and the dimensions of the case. Some carriers allow a guitar in the overhead locker if it fits their published limits, usually in place of your main cabin bag. Others do not accept a guitar as hand luggage at all and offer either the hold or an extra seat. Always check the airline's own instrument page and confirm in writing.
Do I have to buy a separate seat for a cello?
For a full-size cello, in practice yes if you want it in the cabin. Airlines generally do not allow a cello in the locker, and a cello in the hold is exposed to risks that few cellists accept. The seat is booked as an additional passenger under a special name format, and it normally carries no baggage allowance.
Is a hard case really necessary?
If the instrument could be checked, yes. Some airlines make a rigid case a condition for accepting the instrument as checked baggage. Even where it is only a recommendation, a soft bag offers very little protection in a baggage handling system.
Where should I put spare batteries, strings and tools?
Spare lithium batteries belong in the cabin bag, protected against short circuits, within the limits set by the airline. Strings, reeds and soft accessories can go in either place. Tools with blades or sharp edges are best placed in hold luggage.
What if the airline damages my instrument?
Report it in writing at the airport before you leave, keep the documents and photographs, and file a written claim promptly. Remember that the airline's liability on international flights is limited, so specialist insurance is the real protection for a valuable instrument.
One last thing before you leave for the airport
An instrument is the one thing in your luggage that cannot be replaced by a shop at your destination. Treat the trip as a small logistics project: choose the category, read the airline's own rules, book the seat properly, protect the instrument with a rigid case, keep everything else in a separate cabin case, and carry the paperwork and the insurance that make a bad day an annoyance and not a disaster. Do those five things and the gate agent's mood stops mattering. Safe flight, and a good show. 🎶
