A 25-year-old woman from north London was arrested on suspicion of Syria-related terror offences today at Luton Airport as she disembarked from a flight from Turkey, West Midlands Police said.
Luton Airport is expected to return to normal service this morning after a major security scare caused chaos for holidaymakers.
The airport was evacuated yesterday, with all flights suspended and roads shut following the discovery of a suspicious item in the security search area.
Bomb disposal experts carried out a controlled explosion before customers were allowed to return to the terminal almost four hours later.
"We are working hard throughout the night and into tomorrow morning when we expect operations to return to normal," a spokesman for the airport said.
Bomb disposal squad officers have carried out a controlled explosion at Luton airport.
Bedfordshire police have confirmed that the package was "not a home-made bomb."
Romanians landing at Luton Airport were greeted by Home Affairs Select Committee chairman Keith Vaz on the first day of new rules allowing the migrants to work in the UK.
He said he saw no evidence of migrants who have "rushed out and bought tickets" because of the lifting of regulations.
He said that most of the people he met already work in the UK and were "coming back after a holiday".
But he also criticised the government for a "lack of robust estimates" of the number of Romanians and Bulgarians expected to arrive in the UK.