An extra 24,000 passengers will pass through Cardiff Airport in 24 hours this weekend as fans arrive for the Champions League final.
It will receive the majority of passengers flying into the UK, while rail services are also braced for an influx of fans.
About 170,000 people are expected to make the trip to Cardiff to watch Real Madrid take on Juventus on Saturday.
Cardiff Airport’s air traffic service said the operation was unprecedented.
Daryl Rowlands said staff were ready for the extra flights and passengers.