Holiday bookings have jumped with “notable increases” in trips planned for February half-term and Easter ahead of Covid travel tests being scrapped.
Jet2 said bookings had increased by 30% on last week after the announcements that rules would be relaxed for people arriving in the UK.
The rule changes mean fully-vaccinated people arriving in those countries from abroad do not need to take Covid tests.
The change will come into effect from 04:00 GMT on 11 February.
Steve Heapy, chief executive of Jet2, told the BBC the removal of testing was “game-changer” for the travel industry.