Green yes · yellow maybe · blue needs its own seat · red not in the cabin.
At the airport, call it a violin. Few staff know what a viola is, and some picture a cello.
If staff ask what it is, say “a violin”. Few people know what a viola is, and some picture something the size of a cello. The case and the rules are what matter.
Stay friendly, calm and cooperative. Agents help people they like. Getting defensive is the fastest way to lose.
Don't hand it over, and don't argue on the aircraft. You win this in writing.
How you ask matters more than what you cite. Be friendly, calm and cooperative, and make it easy for the agent to help you: "I know this isn't your decision. What can we do?" This works far more often than arguing.
"Your published policy allows this instrument in the cabin. I am not refusing to travel. Please rebook me on the next available flight at no charge, and note on my booking that I was refused."
Canada and the US: compensation rules cover overbooked flights, so a free rebooking here is a negotiation, backed by the airline's own policy. Europe and the UK: denied boarding is not limited to overbooking. If you are refused travel without reasonable grounds, you may have rebooking and compensation rights. Whether a refusal over an instrument counts is untested, and airlines may say it was a safety matter. Note what was said, and claim afterwards.
A new ticket is your cost up front. Keep the receipt and claim it in your letter.
Trains and buses rarely restrict a violin, viola or cello.
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Call the presenter or orchestra now and say you may be late. A colleague, a local luthier or the hall can often lend an instrument for a rehearsal while yours follows with you.
Most professionals never check a violin, viola or cello. Consider it only with a flight case and insurance, checked at the aircraft door and returned at the door. Photograph it and loosen the strings first.
Photograph the instrument, the case, the bag tag and your boarding pass. Photos stay on this device.
Saved on this device only. Nothing is sent anywhere.
Avoid the hold whenever you can. Most professionals never check a violin, viola or cello. If there is truly no other way, use a hard-shell or flight case. Nearly every airline asks for one, and several refuse liability without it.
Airline liability for checked baggage is capped far below the value of a professional instrument. Specialist insurance covers transit.
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Add yourself in one tap. Only the airline, your instrument type, what happened and this month are recorded. No names.
Come back when the airline answers, or doesn't. The response rate is what puts pressure on an airline.
Counted by airline. Reports are not verified.
Loading the public record.
The rules differ by country and airport, so do not rely on it. Notes you write at the time are safe to make anywhere and are useful evidence.
Independent guide. Not legal advice, and not affiliated with any airline. Policies change, and the airline's own page is the authority.