Norwegian is to expand from Gatwick next summer after acquiring 28 weekly slots from Small Planet Airlines for an undisclosed sum.
The take-off and landing slots will allow Norwegian to plan for continued growth at Gatwick as the airline heads into its busiest ever year in the UK in 2018.
The budget airline already flies more than 4.6 million passengers a year to more than 30 destinations from Gatwick.
The route network at includes long-haul flights to nine US cities and Singapore, with further routes to Argentina, Chicago and Austin being added early next year.
Planning work is now underway to allocate the newly acquired 28 weekly slots which cover the busy summer 2018.
Norwegian chief commercial officer Thomas Ramdahl said: “London Gatwick is at the heart of our global growth ambitions so securing these crucial new slots will allow us to offer our passengers even more new routes, additional flights and affordable fares.
“Together with the launch of new routes to Argentina, Chicago and Austin in 2018, gaining extra capacity at London Gatwick is another huge boost as we get ready for our biggest ever year in the UK.”