Whose rules apply on a codeshare

Last verified: 2026-08-25

The answer

A codeshare is a flight sold under one airline’s code and flown by another. The airline on your paperwork and the airline whose aircraft, crew and cargo hold your animal travels in can be two different companies.

Two facts settle which policy matters:

• acceptance is at the airline operator’s discretion — the department’s own wording;
• the IATA standard carries carrier regulations with variations by carrier, not one industry rule.

So the operating carrier’s policy is the one that governs. Reasoning from those two statements, not from a rule that says so in as many words — but it is the only reading that makes sense of both, and it matches how a refusal actually happens: at the cargo terminal, by the company handling the animal.

Why this bites

• You are quoted a policy by the marketing carrier whose brand you booked, and the operating carrier’s is stricter.
• The operating carrier changes after booking — aircraft swaps, schedule changes and seasonal re-routings are normal — and the new operator’s rules are the new answer.
• A single itinerary has several operators. Each leg can be flown by a different company, and each has to accept the animal. The strictest one decides.
• Cargo is booked separately. Your pet travels as manifest cargo on its own air waybill, through a freight operation, not through the passenger booking where the codeshare was sold.

What to do

1. Ask, for every leg: which company will physically operate this flight?
2. Get the acceptance answer from that company’s cargo operation, not from the passenger line of the airline whose code is on the ticket.
3. Ask what happens if the operating carrier changes. Whether your booking transfers is a commercial question with a real answer, and it is better asked before you need it.
4. Re-confirm after any schedule change, however minor it looks.

What this page does not tell you

• Which alliances or agreements cover live-animal carriage.
• Any carrier’s current policy — carrier rules are not systematically recorded here yet.
• Whether a booking transfers when an operator changes; that depends on the contract of carriage.