An easyJet plane made an emergency landing after an oil leak forced its pilot to shut down an engine, the airline said.
The Airbus A319 was carrying 151 passengers and crew from Geneva to Edinburgh on Monday when the pilot made the decision to shut down the engine.
The plane then landed at Luton Airport "as a precaution", the airline said.
A spokeswoman for the airline said: "easyJet can confirm that flight EZY6908 flying from Geneva to Edinburgh diverted to London Luton Airport due to a technical issue.
"The captain took the decision to divert as a precaution only.
"The safety of its passengers and crew is easyJet's highest priority."
She added that the passengers were flown to Edinburgh on a different plane.