Cheap flights from London Heathrow Airport to Iceland from £81

The cheapest month to fly to Iceland from London Heathrow Airport is in January. Flight prices, which tend to average around £172, are often lower during this time because this is during the off-season. If you don’t want to visit Iceland 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 £188.

The cheapest day to depart from London Heathrow Airport to Iceland is on a Sunday when prices can be found for as low as £414. Flights from London Heathrow Airport to Iceland on a Wednesday will generally be more expensive and average around £468. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Iceland is in the morning. Flights from London Heathrow Airport to Iceland during this time can be as low as £368. At midday is when there is more demand to fly to Iceland, so prices are often more expensive at around £513 per ticket.

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

You are more likely to see cheaper flights to Iceland from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Iceland for around £261 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Iceland 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 Iceland 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 Iceland

Icelandair, British Airways and Scandinavian Airlines are the top three most popular airlines that fly to Iceland 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 Iceland. Keep in mind that there are 3 different airlines that fly to Iceland on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between London and Iceland have experienced a delay on any given week. The average delay length over the past 12 months has been 106 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.

4 flights are operational daily from London Heathrow Airport to Iceland as of September 2026. The most popular departure time for this route is 13:00, with 48% of flights per day taking off in the afternoon.

As of September 2026, 28 flights take off from London Heathrow Airport and land in Iceland each week. The most common flight departure day for this route is Mon, with 50% of weekly flights taking off on this day.