BBC News - Conor Neeson
Travellers say they feel "let down" after they were left stranded by cancellations and delays at Belfast International Airport.
Passengers were stuck after an Easyjet flight to Portugal was cancelled on Sunday, while others flying with TUI were left on the Greek island of Kos.
Flights to Bristol and London Gatwick were also cancelled.
The Belfast to Bristol flight was cancelled both ways "due to air traffic control restrictions earlier in the day which led to the crew reaching their maximum operating hours".
Meanwhile, "ground handling delays" at Gatwick were the reason for cancellation of flights to and from the London airport.
