Robert Stirling and Neil Thomas Douglas, two strangers who share an uncanny likeness, met each other on a flight to Galway.Twitter/Lee Beattie

A man met his doppelgänger on a Ryanair flight to Shannon Airport one Thursday in 2015.

Neil Thomas Douglas and his ‘twin stranger’ Robert Stirling found themselves sitting together on the flight and couldn't believe the resemblance. The two took a selfie together and a friend of Douglas's wife posted the image to social media.

The image was uploaded by Lee Beattie, who wrote: “The guy on right is the husband of my friend. The guy on left is a STRANGER he met on a flight last night!”

The two men would encounter one another again when they checked into the same hotel in Galway and yet again when they bumped into each other in a pub.

Neil said: "Later that night, I went to the pub and again, there was my twin. Total weirdness.

"We had a laugh and a pint." reports that many social media users have commented on the uncanny likeness, calling it “spooky.”

* Originally published in 2015.