Nordic airline Finnair has flown fearless passengers from Copenhagen, Denmark, to Helsinki, Finland, on Friday the 13th since 2006.
That's the airport code for Helsinki, Finland, not the Lake of Fire.
Flight tracker Twitter account Flightradar24 poked fun at the coincidence, saying: 'Would you dare to sit in row 13, on board Finnair flight 666 en route to Hel on Friday the 13th?'
Since its first flight 11 years ago, the flight has inspired many social media jests and has been widely covered by worldwide media. Flyers termed as "brave" have is boarding the last ever Flight 666 to HEL on Friday the 13th.
After Friday, the flight number will change from AY666 to AY954.
A spokesperson for Finnair told The Independent that the number has not been changed due to superstitious passengers. The flight has fallen on Friday 13th 21 times throughout its operational history, with no reported ill effects.
It still operates a regular flight from Singapore's Changi Airport to Helsinki, meaning you can still go to HEL via SIN.
"We are a growing airline and we are reorganising our flight numbers to make room for additional flight numbers to be used", he said.
The fear of "Friday the 13th" is called friggatriskaidekaphobia.
Pilot Juha-Pekka Keidasto once said: "It has been quite a joke among the pilots".
The fear of the number 666 is hexakosioihexekontahexaphobia.