When an international flight is cancelled in 2026, your rights depend largely on the airline's country of origin and the location of the departure. If your flight departs from the European Union or is on an EU-based carrier, you are protected by Regulation EC 261/2004, which mandates that the airline must provide you with a choice between a full refund or re-routing to your final destination at the earliest opportunity. Additionally, you may be entitled to "Duty of Care" (meals, phone calls, and hotel accommodation for overnight delays) and monetary compensation of up to €600 if the cancellation was within the airline's control. In the U.S., while there is no "automatic" cash compensation for cancellations, a 2024–2026 Department of Transportation rule now mandates that airlines must provide automatic, prompt cash refunds if a passenger chooses not to take an alternative flight. Most major international carriers will also provide vouchers for meals and hotels as a matter of policy. The "pro" move in 2026 is to use the airline's app to rebook yourself immediately, as the lines at the airport help desks can take hours to navigate during a mass-cancellation event.