The very friendly skies.

A new dating app functions like Tinder in the sky, connecting air travelers for in-flight flirting and possible mile-high hookups.

The free app, AirDates, encourages fliers to post their itineraries before trips so they can meet up with potential lovers mid-air.

Users “check in” at the airport, chat using a special Internet-free connection, and then search for love.

New York City travelers were excited to try it out.

“I am looking for a girl on a plane who has things in common with me, like movies,” said Felipe Elyas Gomes, 22, of Brazil, who was flying to his home country Tuesday from JFK Airport.

“I’d talk to the girl, say, ‘Hey, how are you? Why are you traveling? We’d see where it goes — and head to the bathroom,” he said.

The app hasn’t really taken off yet in the Big Apple yet. Only three people were logged in when The Post tested it out Tuesday.