Significant change: Meaning for Flight Refunds and Claims

A schedule or service change large enough to trigger a remedy under the governing rule. US DOT lists specified time and itinerary changes.

Why it matters

Save the old and new itinerary. A change in airport or connection can matter even when the time shift is smaller.

Compare the applicable rule with your ticket and the airline’s written notice. You can also browse other flight-claim terms.

This definition is a starting point. The rule and ticket terms for your flight still matter.