Cheap flights from Reykjavik Keflavik Intl Airport to London from £91

The cheapest month to fly to London from Reykjavik Keflavik Intl Airport is in October. Flight prices, which tend to average around £57, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Reykjavik Keflavik Intl Airport averaging around £58.

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £148. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Reykjavik Keflavik Intl Airport to London for around £704.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £148. Flights in the morning are often more expensive, with an average ticket price of £218.

Fly from Reykjavik Keflavik Intl to London Luton for the best Reykjavik Keflavik Intl - London flight prices

There are 2 cabin classes available to choose from on Reykjavik Keflavik Intl Airport to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Reykjavik Keflavik Intl Airport to London.

Historically, on average around 10% of flights between Reykjavik and London have experienced a delay on any given week. The average delay length over the past 12 months has been 116 minutes.

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

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

According to our data, Icelandair have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

As of June 2026, there are 14 flights per day flying from Reykjavik Keflavik Intl Airport to London. The most common time of day flights depart is 10:00, with 66% of flights taking off at midday.

As of June 2026, 100 flights take off from Reykjavik Keflavik Intl Airport and land in London each week. The most common flight departure day for this route is Thu, with 21% of weekly flights taking off on this day.