Norwegian has announced its latest transatlantic routes from the UK, with new year-round flights from Gatwick to Seattle and Denver.

Both routes launch in September, and will be the only direct, non-stop flights from Gatwick to the two US cities.

A twice-weekly (Tuesday and Saturday) service to Denver will start on September 16, departing Gatwick at 0950 and arriving into Colorado’s capital at 1240. A third weekly frequency will be added for the winter season, departing on Thursdays.

Then from September 17, a four times-weekly service to Seattle will operate on Monday, Wednesday, Friday and Sunday, departing Gatwick at 0950 and arriving into Seattle at 1145.

There are currently no non-stop flights from Gatwick to either Denver or Seattle – British Airways operates flights from Heathrow to Denver, while BA and Virgin Atlantic fly to Seattle from Heathrow.

Fares to both destinations start from £199 each-way, and Norwegian says there will be over 125,000 seats available across the two routes, which will be operated by two-class B787 aircraft.

Commenting on the new routes Thomas Ramdahl, chief commercial officer at Norwegian said:

“Our new Seattle and Denver routes reflect the huge consumer demand on both sides of the Atlantic for quality affordable long-haul travel.

“With our USA flights over 90 per cent full, we are excited to add Seattle to our growing list of US destinations while breaking the monopoly on UK flights to Denver.”

Norwegian recently announced plans for new transatlantic routes from five Irish and Scottish airports, and in October last year launched flights from Gatwick to Las Vegas.

The carrier also flies from Gatwick to Oakland International, Boston, New York, LA, Orlando and Fort Lauderdale.

Meanwhile Norwegian announced a 12 per cent increase in passengers last month compared with March last year, with 2.4 million travellers using the airline