Which airlines are the worst for delays and cancellations in Europe in 2025?

The flight disruption data from Flightright reveals shocking reality for travelers in 2025: nearly a third of flights from its top 20 airlines were delayed by at least 15 minutes, with TAP Portugal leading the pack. Meanwhile, cancellations remain relatively rare, with Finnair facing the worst outlay of up to four percent on canceled flights due to EU regulations, ensuring passengers can claim compensation proportional to their flight distance if disrupted.