Paul Greig, who runs the Standard in Northallerton, North Yorkshire, found an advert online for a retired 1966 Jet Provost T Mark Three aircraft.
The plane was bought for £1,000, with Greig and nine friends each contributing £100 and then working together to restore it to its former glory.
In an interview with the BBC, Greig said he had once joked with his children that it would be impossible to buy an aeroplane online, but then he found the jet on eBay.
Can it fly?
The landlord said: "The best part of the day is watching people come in and gasp, saying is it real? Can it fly? How did you land it here?
"We get customers coming all the way from Holland to see it – they're amazed it's just sat in the back of the beer garden.
“It's honestly the best £100 I have ever spent, and that's not just because of the increase in customers, but we've not stopped working on it since."
The aeroplane was active at the RAF Linton-on-Ouse airfield in the early 1960s before it was donated to a Welsh museum.
It was bought after the museum closed by another aircraft fan but put up for sale when its previous owner wanted to downsize.