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Endpoint guides

Cancel reservation

Cancels a flight reservation.

Overview

The cancel_reservation endpoint initiates the cancellation process for an active flight reservation with the airline. Unlike hotel cancellations (which can be asynchronous), flight cancellations return upon process completion.

Use case

This endpoint can be used as part of your flight booking application. The request initiates the cancellation process with the airline and returns upon the process completion.

Key parameters

ParameterTypeRequiredDescription
booking_uidstringyesThe unique booking identifier of the reservation to cancel

Response structure

The response confirms the cancellation with:

  • status — updated reservation status (cancelled)
  • booking_uid — the cancelled booking identifier
  • cancellation_reference — airline cancellation reference number (if applicable)

Important considerations

Before cancelling, always verify the fare’s cancellation policy via get_reservation_details. Non-refundable fares or fares outside the cancellation window may incur penalties or be ineligible for cancellation entirely.

  • Cancellation fees depend on the airline and fare class
  • Some low-cost carrier fares are non-refundable
  • NDC content (Travelfusion) may have different cancellation timelines than GDS content
  • Once cancelled, the action cannot be reversed — the user must rebook if needed