Special fares to Buenos Aires from under £230 one-way have been introduced ahead of the first anniversary of Norwegian serving Argentina from Gatwick.
The £229.90 lead-in rate is available on flights from February 26 to May 31 when booked before 10.59pm on February 18.
The £439 return offer applies to economy flights with premium costing from £520 each way.
The budget airline broke the monopoly on direct flights to Argentina on Valentine’s Day last year wit for flights a week, which rose to a daily service in December.
The Buenos Aires flights connect with Norwegian’s domestic services in Argentina to Cordoba, Mendoza, Iguazu, Bariloche, Neuquén and Salta with fares starting at £35 one-way.
Norwegian plans to increase its South America coverage with the first low-fare flights from the UK to Brazil later this year with a non-stop service from Gatwick to Rio de Janeiro with fares starting at £199.90 one way.