International travellers will be hit by plans to close the ticket office at Luton Airport Parkway railway station according to the area's MP.
Gavin Shuker has written to Thameslink saying the decision is short sighted as the airport is currently undergoing a huge expansion.
But the rail operator says selling tickets on the concourse will enable staff to give more help to passengers.
It claims there will be no staff cuts and new "Station Hosts" will have access to the same range of fares on handheld machines that are currently available from the ticket office.
Thameslink says the way people pay for their journeys is changing and many are being purchased online, using pre-payment cards or from machines.