Finnair is raising Helsinki frequency from Heathrow from the winter schedule.
Two extra daily flights will be aded to the route to provide improved connections across the Nordics, Baltics and beyond to Asia.
The new flights mark a 50% increase in the airline’s capacity between London and Helsinki from October 27.
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The route will be operated up to six times a day in each direction, up from four times daily this summer.
The additional flights will depart from Heathrow each day at 9.55am and 1.10pm arriving in Helsinki at 2.45pm and 6pm respectively.
The two new daily flights will also be offered throughout next summer.
The airline now offers a record number of connections via Helsinki to four popular destinations in Finnish Lapland – Ivalo, Kittila, Kuusamo and Rovaniemi.
Airbus A320s and A321s will operate the new services, complimenting existing flights which are operated by a mix of the airline’s fleet, including widebody A350s and A330s.
UK market director Anssi Partanen said: “We are incredibly excited to be boosting capacity between London and Helsinki, deepening ties between the UK and Finland.
“London has always been an important city for Finnair, and for our customers, so we are thrilled to be announcing this news ahead of the 70th anniversary of the London-Helsinki route in September.
“These new flights are also timed to give our customers increased choice and flexibility when travelling during the peak morning and evening periods and will facilitate even smoother connections onto our network in Northern Europe and the Far East.”
Return flights from London to Helsinki start ar £174 in economy and £545 in business class, including taxes and charges.