Cheap flights from London Heathrow Airport to Reykjavik from $155

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 $308.

Our data shows that Sunday is the least expensive day to fly to Reykjavik Keflavik Intl Airport. Tickets to fly out on this day can be as low as $282. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $500. These prices are subject to change though, so be sure to set up a Price Alert for flights to Reykjavik Keflavik Intl Airport.

According to our data, the cheapest time of day to fly to Reykjavik Keflavik Intl Airport is in the morning. momondo users have found flights departing from London Heathrow Airport to Reykjavik Keflavik Intl Airport in the morning for as low as $351. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Reykjavik Keflavik Intl Airport is at midday when prices are around $587.

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 $428 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 $342 on momondo.

There are 3 cabin classes available to choose from on London Heathrow to Reykjavik Keflavik Intl 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 London Heathrow Airport to Reykjavik Keflavik Intl Airport.

As of March 2026, prices for London Heathrow Airport to Reykjavik Keflavik Intl Airport flights are approximately 16% more expensive when compared to flights at the same time last year.

Historically, on average around 8% 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 112 minutes.

Generally, flights departing in the morning 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. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

10 flights are operational daily from London Heathrow Airport to Reykjavik Keflavik Intl Airport as of March 2026. The most popular departure time for this route is 12:00, with 43% of flights per day taking off in the afternoon.

73 flights are operational weekly from London Heathrow Airport to Reykjavik Keflavik Intl Airport as of March 2026. The most popular departure day for this route is Fri, with 22% of flights per week taking off on this day.