Every day this summer, Alaska Airlines is surprising at least one of its main cabin guests with an upgrade to premium class to celebrate the start of the busy travel season.

The programme “upgrade unlocked” will run from June 1 to September 2, allowing guests to experience the airline with the most legroom in premium class.

“Upgrade unlocked is one way we’re showing guests our appreciation for choosing to fly with us to their favourite destinations this summer,” said Eric Edge, managing director of marketing and advertising at Alaska Airlines.

In a press release from Alaska Airlines, it said: “Each day we’ll notify one of our guests (and their travel partner, if they have one) through the Alaska Airlines mobile app or by email that they’ve been randomly selected to be upgraded from their main cabin seat to premium class”.