In 2026, the answer depends heavily on your region and the cause of the delay. Under the long-standing EU/UK 261 regulations, you are entitled to up to €600 (£520) for delays over three hours, provided the cause was within the airline's control (like crew scheduling or mechanical issues). In the United States, 2026 marks a significant shift: new Department of Transportation (DOT) rules now mandate automatic cash refunds if a domestic flight is delayed by more than three hours or an international one by more than six. While "compensation" (extra money for your trouble) is still not legally required in the US like it is in Europe, airlines are now forced to provide significant "amenities"—such as rebooking, meals, and hotels—if the delay is their fault. Always check the 2026 DOT "Aviation Consumer Protection" dashboard to see which specific commitments your airline has made for that year.