Q: How much does it cost for a return flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Airfare is below average for this route at the moment. London Heathrow Airport to Reykjavik Keflavik Intl Airport flights typically cost between £158 and £281 in January. The cheapest return flight price found within the last 3 days was £117 on Icelandair (15 Jan-21 Jan).

Question 1

What’s the top stopover airport for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Copenhagen (CPH) – chosen by Cheapflights users on 67% of one-stop itineraries from London Heathrow Airport to Reykjavik Keflavik Intl Airport on Cheapflights.

Question 2

How much does it cost for a return flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Airfare is below average for this route at the moment.London Heathrow Airport to Reykjavik Keflavik Intl Airport flights typically cost between £158 and £281 in January.
The cheapest return flight price found within the last 3 days was £117 on Icelandair (15 Jan-21 Jan).

Question 3

What’s the cheapest stopover airport for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Copenhagen (CPH) is the most affordable one-stop option, with an average return flight price of £313.

Question 4

What’s the fastest stopover option from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for one-stop routes: 6h 30m.

Question 5

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 36m.

Question 6

How long is the flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Icelandair can get you from London Heathrow Airport to Reykjavik Keflavik Intl Airport in just under 3h 20m. Your travel time will be generally consistent. There are 1177 mi between London Heathrow Airport and Reykjavik Keflavik Intl Airport. All flights are typically direct.

Question 7

What are the cheapest airlines flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport round-trip?

Accepted Answer

Flying on PLAY is currently your cheapest option to Reykjavik Keflavik Intl Airport, with prices starting at £84. Additional return tickets that might be worth considering are offered by British Airways and Scandinavian Airlines, with the lowest prices starting at £116 and £134, respectively. These flights start at 59% lower than the current average price 3 months from now.

Question 8

How far ahead should I book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

The price you pay for your flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 9

What is the cheapest month to book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport (average of £75). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 10

What is the cheapest day to fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Travellers seeking maximum savings on their London Heathrow Airport to Reykjavik Keflavik Intl Airport flight should consider departing on Thursday mornings when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Question 11

Weekly flight availability from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Accepted Answer

The most flights from LHR to KEF are scheduled on a Wednesday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

Question 12

E

Accepted Answer

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 40.0 - 80.0 inches per month. January is typically the wettest month, when rainfall can reach 80.0 mm. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 40.0 mm.

Question 13

E

Accepted Answer

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 11.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Question 14

What are the cheapest flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

While on average a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport is generally £948, our data shows the cheapest flight currently is £98. When looking at the most popular route, (London Heathrow - Reykjavik Keflavik Intl), you can expect to pay £103 for that flight.

Question 15

What are the most reliable airlines from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

The top 3 most reliable airlines when flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport are American Airlines (88%), Qatar Airways (88%) and Japan Airlines (88%).

Question 16

What are the most popular airlines that fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Consider British Airways, Icelandair or PLAY when booking your flight. These represent the most popular airlines when flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport.

Question 17

What is the cheapest day to fly round-trip from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 8% on your flight compared to booking on days when demand is much higher.

Question 18

How far in advance should I book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 39 days in advance, which can save you up to 37% on flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport compared to booking the week you need them. Waiting 39 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £144. For sooner than that we have options available in the next 3 days from £215.

Question 19

What is the cheapest month to fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, January can be a great choice for travel to Reykjavik Keflavik Intl Airport. Flights to Reykjavik Keflavik Intl Airport from London Heathrow Airport in January are about £153 on average during January, but can be found for as low as £47.

Question 20

What is the cheapest time of day to fly from LHR to KEF?

Accepted Answer

It’s typically best to fly out from London Heathrow Airport to Reykjavik Keflavik Intl Airport in the morning. Doing so could potentially save you 30% on the flight price compared to flying at midday, which is usually more expensive.

Question 21

Can I find deals for flights from Heathrow to Keflavik Intl that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Heathrow to Keflavik Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 22

How can I find direct flights from Heathrow to Keflavik Intl?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Keflavik Intl.

Question 23

Can I find deals for business class flights from Heathrow to Keflavik Intl?

Accepted Answer

Yes. Cheapflights offers flight deals from Heathrow to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 24

How does Cheapflights help users find flights from Heathrow to Keflavik Intl?

Accepted Answer

When you search for this flight from Heathrow to Keflavik Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 25

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Keflavik Intl?

Accepted Answer

Cheapflights helps you find that perfect flight to Keflavik Intl from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 26

Can Cheapflights find flights from Heathrow to Keflavik Intl with no change fees?

Accepted Answer

Need flexible booking options for your flight to Keflavik Intl from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 27

Can Cheapflights notify me if prices for flights from Heathrow to Keflavik Intl become cheaper?

Accepted Answer

Yes! Start tracking prices for Heathrow to Keflavik Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

Round-trip from	£117
One-way from	£68
Popular in	July
Cheapest in	January
Average price	£288
Good round-trip deal	£377 or less
Good one-way deal	£442 or less

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest£84	Average£123	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
British Airways	Cheapest£116	Average£203	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Scandinavian Airlines	Cheapest£134	Average£272	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Icelandair	Cheapest£136	Average£232	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights

Cheap flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport from £68

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London Heathrow to Reykjavik Keflavik Intl are usually found in January or February, booked 81 days in advance, depart on a Thursday or Sunday and return on a Monday

Cheap flight deals from Heathrow to Keflavik Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Heathrow to Keflavik Intl

Cheapest flights from Heathrow to Keflavik IntlExplore the most affordable flight options available from Heathrow to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Explore the most affordable flight options available from Heathrow to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport that are best for you.

Best time to book a flight from Heathrow to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport

How far ahead should I book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

What is the cheapest month to book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

What is the cheapest time of day to fly from LHR to KEF?

How much does it cost for a return flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Weekly flight availability from London Heathrow Airport to Reykjavik Keflavik Intl Airport

What’s the top stopover airport for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

What’s the fastest stopover option from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

What’s the fastest stopover option from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Reviews of airlines servicing Keflavik Intl

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

What are the cheapest airlines flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport round-trip?

What are the most reliable airlines from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

What are the cheapest flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Can I find deals for flights from Heathrow to Keflavik Intl that include hotel bookings?

How can I find direct flights from Heathrow to Keflavik Intl?

Can I find deals for business class flights from Heathrow to Keflavik Intl?

What is the cheapest month to book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Travelling to a place near Reykjavik Keflavik Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Keflavik Intl by adding a car hire and/or hotel booking to your travel itinerary.

Top 4 airlines flying from Heathrow to Keflavik Intl

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Keflavik Intl?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Keflavik Intl?

Can Cheapflights find flights from Heathrow to Keflavik Intl with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Keflavik Intl become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Heathrow to Keflavik Intl
Explore the most affordable flight options available from Heathrow to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.