A change an airline makes to a booked flight after the reservation is made — a new departure time, a different flight number, a changed routing or a cancellation. The airline notifies the agency through the booking, usually via a GDS queue.
Also called: involuntary change, schedule change (SC).
Why it matters
Depending on the size of the change and the airline's policy, the traveller may be entitled to rebook or refund without penalty. The agency has to accept the change, rebook or refund, and inform the traveller — fast, before the seat options disappear.
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