"UK passengers will be the first to benefit from our newest routes and upgraded long-haul passenger experience".
"The airline is exploring potential new routes to more South American countries due to strong ticket sales on the Buenos Aires route".
"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".
As part of the expansion Norwegian Air Argentina has been set up with concessions to fly 72 domestic and 80 worldwide routes out of the Argentine capital.
Norwegian launched United States services from Gatwick in 2014, and has since flown more than 2 million passengers on its transatlantic routes.More news: Microsoft might not fix Skype vulnerability in the immediate future
After that, the airline will launch new direct services to Chicago and Austin in March.
The airline, which entered the low-priced, long-haul fray in 2014 with transatlantic services selling at headline-grabbing fares of £99, also says it is planning an assault on the business class market, adding more premium seats to its new 787 Dreamliner aircraft and increasing the number of flights a week to destinations such as Los Angeles and Miami.
The airline flew more than 5.1 million United Kingdom passengers in 2017.
The airline will introduce eight new Airbus A321neo LR, with the first joining in 2019 and serving the United Kingdom from 2020. "We have big plans for Argentina".
Philadelphia, Detroit, and Minneapolis were suggested as possible destinations.
The Oslo-based airline plans new routes and higher frequency services from Gatwick, its United Kingdom hub for transatlantic and Asian services.More news: Senators flag 'unusual' Susan Rice email on Russia probe from Inauguration Day
Norwegian CEO Bjorn Kjos was speaking in London ahead of the launch of Norwegian's Gatwick-Buenos Aires service, which starts on February 14.
"Perhaps they do not like competition", Kjos moots.
Norwegian Air Shuttle Chief Executive Bjorn Kjos looks at a piece of paper during an announcement of the company's third quarter results in Oslo, Norway, October 22, 2015.
Norwegian flew more than 5.1 million United Kingdom passengers in 2017 and will shortly commence a series of new long-haul routes using Boeing 787 Dreamliner aircraft, including to Argentina, and new direct services to Chicago and Austin in March.
"The extension of Gatwick is very cheap; to me it is surprising the capacity at Gatwick is not expanded".More news: Fossil explodes higher by 80% after blockbuster earnings