Cheap flights from Iceland to London from £86

On average, the least expensive day to fly to London Heathrow Airport from Iceland is on a Friday. momondo users have found tickets for Friday departures for as low as £183. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Monday is £818.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Iceland to London Heathrow Airport in the afternoon for as low as £206. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £387 on average. Flights to London Heathrow Airport from Iceland in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

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

Historically, on average around 8% of flights between Iceland 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.

Saturday 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, Icelandair have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

As of April 2026, 7 flights take off from Iceland and land in London Heathrow Airport each day. The most common flight departure time for this route is 16:00, with 55% of daily flights taking off at midday.

As of April 2026, 53 flights take off from Iceland and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 23% of weekly flights taking off on this day.