When is a schedule change significant under the U.S. refund rule?

The rule uses defined time thresholds and also lists airport, connection, cabin and accessibility changes. A smaller change should not be described as qualifying unless another listed trigger applies.

What this answer depends on

  • The listed time threshold includes the exact boundary value.
  • The change is made to a covered itinerary.
  • For a traveler with a disability, check whether the airport or aircraft change affects a required accessibility feature or a companion on the same itinerary.
  • The flight is scheduled to, from or within the United States.
  • The airline charged you directly for the relevant ticket or fee.
  • The refund processing period starts from the date defined by the current rule or from a valid refund request, depending on the situation.

Important exceptions

  • A smaller time change can still qualify through a different listed trigger.
  • Do not infer that every flight-number, aircraft or seat change is significant.
  • Do not apply this rule to a voluntary cancellation of an operating, unchanged flight.
  • Some DOT guidance uses different wording for the processing period. Check the current regulation and the payment method before relying on a deadline.

What to do next

  1. Compare both itineraries

    Record the original and changed departure, arrival, airport, connection and cabin details.

  2. Review the offered alternatives

    Read the airline or seller notice before accepting or declining an alternative.

  3. Keep the change record

    Save the original itinerary, updated itinerary and all related messages.

Sources and last checked