Drivers are suffering long delays on the M1 today after an accident involving a car and a lorry.
Roads have re-opened in the last few hours but one lane in both directions remains closed.
Staff at London Luton airport issued a warning via their Facebook page to people flying today to seek an alternative route or leave in plenty of time so they are not late for their flights.
The road was closed between junction 13 and junction 14 in both directions between Milton Keynes and Bedford.
The accident happened shortly after 10am this morning.