The low-cost carrier said the launch on Monday (24 June) was the start of a “phased release” of fares for its summer 2020 schedule.

In total, Norwegian is offering non-stop flights from Gatwick airport to nine US cities. Economy fares lead in from £157.

Norwegian’s nine US destinations from Gatwick are Boston, New York JFK, Orlando, Tampa, Denver, Miami, Austin, San Francisco and Los Angeles.

Matthew Wood, Norwegian’s senior vice-president commercial long-haul, said: “Brits love a bargain, which is why we are giving consumers plenty of time to start planning next year’s summer holidays with early access to our lowest fares to the US.

“We will be releasing more flights in phases that make up the rest of our summer 2020 flight schedule but until then, we recommend consumers book early to secure the best fares and their preferred seats onboard our modern, environmentally-friendly aircraft to the US’s top cities.”

The remainder of Norwegian’s summer 2020 programme will be rolled out “over the coming weeks”, the airline has said.

Fares are available for the period 29 March 2020 through June 2020.