Birmingham Airport is supporting passengers affected by the collapse into administration of airline Monarch and is encouraging people to stay away from the airport.
It is estimated around 110,000 people could be stranded abroad waiting to travel on Monarch flights back to the UK although it is not known how many of them are due to fly into Birmingham.
The airline operated several routes out of the city including to Valencia, Split, Naples and Rhodes, all of which were launched earlier this year.
It was Birmingham's third largest carrier and had ten aircraft based at the airport. Monarch Aircraft Engineering also operates a base at the airport but this is unaffected by the administration.
Birmingham Airport said in a statement: "It is with regret to have been notified this morning that Monarch Airlines has gone into administration and has ceased trading with immediate effect.
"As well as supporting passengers who turned up early this morning for flights before the sad news broke, we have been working closely with the Civil Aviation Authority (CAA) and the Department for Transport to support the effort to repatriate customers back to the UK over the coming weeks.
"The CAA will bring all passengers back to the UK at no cost to them. Passengers due to travel with Monarch are advised not to come to the airport as there will be no more Monarch flights from the UK.
"Monarch has been a partner airline of Birmingham Airport for many years, carrying 1.5 million passengers annually.
"We are in discussions with other airlines to try and fill the gap left by Monarch’s Birmingham operation. No further information is available at this time."
Anyone booked to travel with Monarch should visit monarch.caa.co.uk or call 0300 303 2800 from within the UK or +44 1753 330330 from overseas for more information.