Cheap flights from London Heathrow Airport to Reykjavik from £86

The month of January is, on average, the cheapest month to fly to Reykjavik Keflavik Intl Airport from London Heathrow Airport, with most prices found around £152. If you don’t want to visit Reykjavik Keflavik Intl Airport in January, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £180.

On average, the least expensive day to fly to Reykjavik Keflavik Intl Airport from London Heathrow Airport is on a Sunday. momondo users have found tickets for Sunday departures for as low as £364. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport on a Wednesday will generally be more expensive and average around £427. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest London Heathrow Airport to Reykjavik Keflavik Intl Airport flights are usually those with departure times in the morning. Our users have found flights to Reykjavik Keflavik Intl Airport in the morning for as low as £341. Try not to purchase tickets at midday because they tend to be around £494. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Reykjavik Keflavik Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Reykjavik Keflavik Intl Airport for around £258 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Reykjavik Keflavik Intl Airport from London Heathrow Airport for as low as £215 on momondo.

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

British Airways is the most popular carrier operating from London Heathrow to Reykjavik Keflavik Intl

Icelandair, British Airways and Scandinavian Airlines are the top three most popular airlines that fly to Reykjavik Keflavik Intl Airport from London Heathrow Airport according to our data. Icelandair is the first choice among our users, with 61% of people opting to fly with this airline when travelling to Reykjavik Keflavik Intl Airport. Keep in mind that there are 3 different airlines that fly to Reykjavik Keflavik Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between London and Reykjavik have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.

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

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday 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 10% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Reykjavik Keflavik Intl Airport is 10 per day as of September 2026. The most frequent departure time is 13:00, with 43% of daily flights leaving in the afternoon.

As of September 2026, there are 70 flights per week flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport. The most common day of the week flights depart is Fri, with 20% of flights taking off on this day.