All flights were halted at Edinburgh Airport this morning due to an IT issue affecting its air traffic control provider.
In a post on X, formerly Twitter, the airport later announced service had resumed.
Its post read: "Flights have now resumed following the IT issue with our air traffic provider.
"We thank passengers for their patience and understanding."
But passengers continue to feel the effects.
A Delta Air Lines flight from New York to Edinburgh was diverted to Dublin after going into a holding pattern over the Scottish capital.
And a live arrivals board on the airport's website showed multiple flights diverted, delayed and cancelled.
Morven McCall and Cody Stevenson, both 19, were due to fly easyJet from Edinburgh to Amsterdam on their first trip away together.
Morven told Sky News: "We literally just got into the airport and as soon as we walked through the door there was an announcement that it had been cancelled.
"I was ill over the summer and had to cancel two holidays already, this was our first time going away together. We are just gutted and stressed."
Follow live: Latest updates as flights halted
One passenger was on a plane when they found out.
They said: "We boarded our flight and pushed back on time for an 8.45 (am) departure, then sat for a while before the pilot told us what was happening.
"He updated us a couple of times, cabin crew are brilliant at handing out water etc, and I'm surprised that everyone appears to be upbeat. But then you do wonder how long for, just been told we're hoping to be in the air in 20 minutes."
Another passenger told us: "The first news was from the airport announcement as we were halfway through boarding, saying the airfield was closed due to air traffic control down.
"No one knew what was going on. We'd already been delayed a bit before boarding, with no reason. I suspect problems started about 9am."
It comes after an earlier announcement that all flights had been halted.
"No flights are currently operating from Edinburgh Airport," the previous statement said.
"Teams are working on the issue and will resolve as soon as possible."
There was no timeframe for recovery initially, Sky News learned.
It's understood by PA that the issue was not linked to today's Cloudflare outage.
Edinburgh Trams also posted on X, writing: "If you're travelling with us to @EDI_Airport this morning, please be aware that flights are not currently operating."
The airport urged passengers to contact their airline for the latest information on flights.
An average of 43,000 passengers per day use the airport, which is served by 37 airlines flying to 155 destinations.
(c) Sky News 2025: IT issue affects flights at Edinburgh Airport
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