Both 13 and 17 are considered unlucky in certain countries, meaning airlines do not want to include them.
Unlucky 13 is well known and has a number of negative connotations, including Judas, who betrayed Jesus, being the 13th disciple.
Air France, Iberia and Ryanair are just some of the airlines that don't have row 13.
A Ryanair spokesperson told Sun Online Travel it was an "American manufacturing tradition".
It's not just the airlines that avoid the number 13 – some hotels and cruise liners don't have a deck or floor 13 either.
Luthansa is one airline that doesn't have rows 13 and 17.
On their website, they explain: "In some cultures, the number 13 is considered unlucky.
"That is why there is no row 13 in planes, because we respect the superstition.
"That way nobody who thinks that the number 13 is unlucky has to sit in that row."
The number 17 is seen as unlucky because, when viewed as the roman numeral XVII, its anagram VIXI roughly means "my life is over" in Latin.
Luthansa explained: "In some countries, for example Italy and Brazil, the typical unlucky number is 17 and not 13.
"Seeing as Lufthansa welcomes a lot of international passengers, we try to consider as many of these specific cultural beliefs as possible."
It isn't the only unlucky number to be missed out – United Airlines Polaris doesn't have a row 13 or 14 either, with row 14 considered unlucky in China as it sounds like "will die" in Chinese.
But in fact, Row 13 is the best row to sit in while travelling with easyJet, according to SeatGuru, as it is near the exit.
Sun Online Travel also previously revealed how frequent travellers who want an entire row to themselves should book the aisle and the window seat when travelling with a friend.
As people often avoid the middle seat, it makes it more likely for the seat to remain empty.
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