Norwegian has introduced its lowest transatlantic fare from Gatwick to the US at £135.
The cut-priced deal covers flights to Boston from February 2017.
The budget carrier serves eight US cities from Gatwick with the lowest fares ranging from £149 to £199 dependent on the destination.
The £135 one-way ticket to Boston becomes Norwegian’s lowest ever long-haul fare as the airline continues its UK expansion with the introduction of new Boeing 787 Dreamliners and more routes.
Boston became the carrier’s sixth US destination from Gatwick in March, with four flights a week.
The carrier’s chief commercial officer Thomas Ramdahl said: “We’re serious about becoming the number one choice for UK travellers and along with introducing more competitive fares for our Premium cabin, we’ve also now reduced our lowest economy fare to the US.
“Our UK expansion plans will continue as we see huge potential in a nation that loves travel. By introducing our lowest ever fare to one of our most popular destinations shows that Norwegian is the best way to the USA.”
New flights from Gatwick to Las Vegas start on October 31 with fares starting at £179 in economy and £499 in the premium cabin.