From the beginning of July 2014, budget carrier Norwegian is to fly from Gatwick to New York, Los Angeles and Fort Lauderdale in Florida.
Starting on July 3, the thrice-weekly services to New York will have an introductory one-way fare of £149, while the Los Angeles service, starting on July 2, will be twice a week with an introductory fare of £199 one way.
The Fort Lauderdale flights will start on July 4, with the twice-weekly service starting with an introductory fare of £179 one way.
The US flights will be on the new Boeing 787 Dreamliner plane
Norwegian also announced it would be starting five new European services from Gatwick next year - Budapest, Cyprus, Sicily, Santorini and Corfu.
Norwegian's chief executive Bjorn Kjos (KJOS) said: "There's great demand for high-quality flights at a low fare between the UK and the US, particularly to and from Gatwick.
"We are looking forward to welcoming many new customers on board our brand new aircraft."