British Airways has launched an investigation after a flight to Dusseldorf landed in Edinburgh instead.
The airline said the error happened after a sub-contracted crew used an incorrect flight plan.
Passengers only realised the mistake after the plane landed in the Scottish capital, and were flown to their original destination after the plane was refuelled.
In a statement, British Airways said: "We are working with WDL Aviation, who operated this flight on behalf of British Airways, to establish why the incorrect flight plan was filed.
"We have apologised to customers for this interruption to their journey and will be contacting them all individually."

Saudi-owned vessel targeted in Red Sea, crew safe, state news agency says
Rubio says US committed to helping end Ukraine war after meeting Lavrov
India's Modi promises fast-track courts on exam leaks, protesters want minister to quit
Venezuela quakes caused $19.6 billion in damage, World Bank report shows
Ousted Ukrainian defence chief digs in against Zelenskiy, protests grow
