Cheap flights from London to Helsinki from $121

The month of January is, on average, the cheapest month to fly to Helsinki from London, with most prices found around $96. If you aren’t able to travel during the month of January, then book flights to Helsinki from London during February instead. Flights to Helsinki in February, while not as cheap as those in January, still average around $112.

The cheapest day to depart on your flight to Helsinki is on a Wednesday when prices can be found for as low as $192. This is often the case because there is less demand to fly during this day of the week. Flights from London to Helsinki on a Tuesday will generally be more expensive and average around $524. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

According to our data, the cheapest time of day to fly to Helsinki is in the afternoon. momondo users have found flights departing from London to Helsinki in the afternoon for as low as $374. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Helsinki, so prices are often more expensive at around $474 per ticket.

Fly from London Stansted to Helsinki-Vantaa for the best London - Helsinki-Vantaa flight prices

You are more likely to see cheaper flights to Helsinki from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Helsinki for around $334 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Helsinki from London for as low as $269 on momondo.

There are 3 cabin classes available to choose from on London to Helsinki flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 30% on your flight if you consider stops on a London to Helsinki flight.

As of August 2026, prices for London to Helsinki flights are approximately 17% cheaper when compared to flights at the same time last year.

Norwegian, Scandinavian Airlines, and Finnair are the most popular carriers operating from London to Helsinki-Vantaa

Finnair, Scandinavian Airlines and Ryanair are the top three most popular airlines that fly to Helsinki from London according to our data. Finnair is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Helsinki. Keep in mind that there are 3 different airlines that fly to Helsinki on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between London and Helsinki have experienced a delay on any given week. The average delay length over the past 12 months has been 110 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Ryanair have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

Stockholm (ARN) was the most common stop: 64% of momondo users choosing 1-stop flights on this route connected there.

Flights via Stockholm (ARN) offer the lowest average round-trip price of $197.

Flights connecting via Stockholm (ARN) have the shortest average one-way travel time: 4h 40m.

Copenhagen (CPH) has the shortest average layover time for this route: 1h 13m.

24 flights are operational daily from London to Helsinki as of August 2026. The most popular departure time for this route is 10:00AM, with 53% of flights per day taking off at noon.

171 flights are operational weekly from London to Helsinki as of August 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.