A woman has missed a check-up after a heart transplant, a week after her flight was cancelled as a result of an issue with UK air traffic control.
Serena Hamilton, 30, from Cookstown, was due to be rushed to Newcastle Freeman Hospital on Tuesday.
But the earliest flight from Belfast International Airport would not have got her there on time.
I had a transplant 15 months ago and these appointments are very important, she told BBC News NI.
Hamilton, one of tens of thousands of passengers who have been disrupted by the UK's air traffic control fault, has been one of the many passengers who have been affected.
Wesley and Stacey Baird from Ballyclare were due home on Monday from their honeymoon in Crete, but their flight was cancelled and they remain on the Greek island.
When they got to the airport last night, nobody of the staff knew - it took a good three hours before they knew the flight was going to be cancelled, Mr. Baird said.
The technical issue has been resolved, but it's likely to take days for flights to return to normal.