Thomas Cook Airlines is to base an extra Airbus A321 at Gatwick Airport from May, adding 140,000 seats a year from the London hub.
The additional flights, which are already on sale, will take passengers to Turkey, Tunisia, the Canaries and the Balearics this summer on both flight-only and package holidays.
In total, the airline will have nine aircraft at Gatwick from May.
Chief airlines officer Christoph Debus said: "We’re very pleased to expand our Gatwick programme by 12 per cent this summer.
"It means we can take more customers to some of our most popular short and mid-haul holiday destinations, including Turkey where we are seeing particularly strong demand, and Tunisia, which is proving very popular."
The airline will operate two additional daily Gatwick flights from May 24 to October 31 this year.
