He added that United Kingdom passengers will be first to benefit from the airline's newest routes and efforts to improve passenger experience.
Norwegian's first flight to Buenos Aires from London Gatwick takes off on Wednesday.
The airline plans to expand its United Kingdom routes into Asia, the Middle East and Latin America.
Norwegian says that it has the world's longest low-priced route from Gatwick to Singapore and is aiming to serve Tokyo, Shanghai and Beijing if the airline receives access to the Siberian flight corridor which gives Norwegian the most efficient and direct routing across Russian Federation to the Far East.
While to date Norwegian has been stealing market share from the legacy full-service airlines flying to the likes of NY and Los Angeles, the carrier is making its boldest move...
"The UK will be at the heart of our continued global expansion and we remain fully committed to the market", said Kjos.
"We are launching long-haul routes exclusively from London Gatwick Airport, introducing our newest Dreamliners to Gatwick and increasing frequency on popular routes which reflects the growing importance of the United Kingdom to the future of our business".
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Kjos said that Norwegian is planning cabin upgrades to the 10 new Dreamliners expected this year, including a new 56-seat premium cabin, up from 35.
Norwegian Air is to cement its position as Gatwick's largest long-haul airline with its inaugural flight to South America, the promise of increased destinations and frequencies across the Atlantic to the United States, and a new front flying from London's second airport to China and Japan and, in time, possibly India. Norwegian also has long-term ambitions to secure slots for a triple-daily Gatwick-New York service.
Norwegian remains Europe's third largest low-priced airline, behind Ryanair and EasyJet, but has global designs that will see it competing not with its budget superiors but instead with more traditional carriers such as British Airways.
The airline will introduce eight new Airbus A321neo LR, with the first joining in 2019 and serving the United Kingdom from 2020.
In December past year Telegraph Travel crunched some numbers, courtesy of OAG, the air travel analysts, to see how Norwegian was competing in the transatlantic market.
Norwegian's chief executive, Bjørn Kjos, said the new route would be followed in June by the setting up of a subsidiary in Argentina, licensed to fly up to 152 routes around the continent.
Norwegian, Europe's third-largest budget airline after Ryanair (RYA.I) and easyJet (EZJ.L), needs permission under a deal with Russian Federation before it can access this route.