What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for London to Reykjavik flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

Which airline has the best punctuality record on London to Reykjavik flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 8% of flights being delayed.

How often are flights from London to Reykjavik delayed?

About 9% of weekly flights between London and Reykjavik have experienced delays in the past year, with the average delay time being 111 minutes.

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.

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).

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

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

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

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

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

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.

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

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.

£82+ Cheap Flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport

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 £287 and £206 in September. The cheapest return flight price found within the last 3 days was £161 on Icelandair (8 Sept-15 Sept).

Cheapflights Tip: The best prices from London Heathrow to Reykjavik Keflavik Intl are usually found in January or November, booked 53 days in advance, depart on a Sunday or Thursday and return on a Friday

Cheap flight deals from Heathrow to Keflavik Intl

Enter your travel dates to find the best prices.

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One-way

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 18 May 2026.

Tue 8/921:25

LHR

KEF

Nonstop3h 10m

Icelandair

Tue 15/907:40

KEF

LHR

Nonstop3h 15m

Icelandair

Deal found 13/5£161

Sat 17/1021:25

LHR

KEF

Nonstop3h 10m

Icelandair

Tue 20/1007:40

KEF

LHR

Nonstop3h 15m

Icelandair

Deal found 17/5£165

Sat 19/913:05

LHR

KEF

Nonstop3h 10m

Icelandair

Thu 24/907:40

KEF

LHR

Nonstop3h 15m

Icelandair

Deal found 13/5£166

Tue 17/1120:35

LHR

KEF

Nonstop3h 20m

Icelandair

Fri 20/1107:35

KEF

LHR

Nonstop3h 15m

Icelandair

Deal found 15/5£167

Sat 16/507:20

LHR

KEF

Nonstop3h 05m

British Airways

Wed 20/511:00

KEF

LHR

Nonstop3h 10m

British Airways

Deal found 15/5£168

Tue 24/1107:35

LHR

KEF

Nonstop3h 20m

British Airways

Fri 27/1118:10

KEF

LHR

Nonstop3h 00m

British Airways

Deal found 15/5£170

Thu 26/1120:35

LHR

KEF

Nonstop3h 20m

Icelandair

Sun 29/1107:35

KEF

LHR

Nonstop3h 15m

Icelandair

Deal found 17/5£172

Mon 30/1120:35

LHR

KEF

Nonstop3h 20m

Icelandair

Thu 3/1207:35

KEF

LHR

Nonstop3h 15m

Icelandair

Deal found 17/5£173

Sat 5/1207:35

LHR

KEF

Nonstop3h 20m

British Airways

Fri 11/1218:10

KEF

LHR

Nonstop3h 00m

British Airways

Deal found 13/5£175

Mon 2/1120:35

LHR

KEF

Nonstop3h 20m

Icelandair

Mon 9/1107:35

KEF

LHR

Nonstop3h 15m

Icelandair

Deal found 17/5£176

Tue 10/1120:35

LHR

KEF

Nonstop3h 20m

Icelandair

Fri 13/1116:20

KEF

LHR

Nonstop3h 10m

Icelandair

Deal found 16/5£180

Find flight deals from Heathrow to Keflavik Intl

Round-trip from	£161
One-way from	£82
Popular in	August
Cheapest in	January
Average price	£259
Good round-trip deal	£339 or less
Good one-way deal	£230 or less

Icelandair
8/9-15/9
Nonstop
6h 25m total
London to Reykjavik

Search Deals

Icelandair
12/11
Nonstop
3h 20m total
London to Reykjavik

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (£51 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in May 2026

Search Deals

Price to beat on a round-trip flight from London Heathrow to Reykjavik Keflavik Intl.

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Price to beat on a one-way flight from London Heathrow to Reykjavik Keflavik Intl.

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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.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 8/11

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Wed 18/11

16:20-19:30

Nonstop3h 10m

£185

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 1/10

19:15-07:50

1 stop13h 35m

Reykjavik Keflavik Intl

Sat 10/10

20:05-07:40

1 stop10h 35m

£220

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 28/10

19:30-10:50

1 stop15h 20m

Reykjavik Keflavik Intl

Sat 7/11

18:05-09:20

1 stop15h 15m

£222

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Tue 6/10

13:05-15:15

Nonstop3h 10m

Reykjavik Keflavik Intl

Tue 13/10

07:40-11:55

Nonstop3h 15m

£224

Fastest return journey

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 1/10

21:25-23:35

Nonstop3h 10m

Reykjavik Keflavik Intl

Sat 10/10

16:10-20:20

Nonstop3h 10m

£241

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 8/10

21:25-23:35

Nonstop3h 10m

Reykjavik Keflavik Intl

Tue 20/10

16:10-20:20

Nonstop3h 10m

£254

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 30/5

12:20-23:20

1 stop12h 00m

Reykjavik Keflavik Intl

Mon 1/6

00:20-07:40

1 stop6h 20m

£263

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 5/11

19:30-10:50

1 stop15h 20m

Reykjavik Keflavik Intl

Fri 13/11

18:05-09:20

1 stop15h 15m

£263

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 8/11

19:30-10:50

1 stop15h 20m

Reykjavik Keflavik Intl

Tue 17/11

18:05-18:30

1 stop24h 25m

£274

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 12/11

07:25-10:45

Nonstop3h 20m

Reykjavik Keflavik Intl

Sat 14/11

11:55-15:05

Nonstop3h 10m

£279

Flights are sorted by cheapest return flights first.

Deals found on 13/5

Showing 1-10 of 23 resultsSorted by cheapest first

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.

LHR-KEF

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

Prices

Delays

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

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 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport (average of £143). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of £356). 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.

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

When flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Reviews of airlines servicing Keflavik Intl

Check out reviews from past customers who have flown with Scandinavian Airlines,Icelandair, andBritish Airways from London Heathrow Airport to Reykjavik Keflavik Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Scandinavian Airlines

7.4

Good

1,781 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Mar 2026

CPH - ORD

The flight was smooth for the most part. Please remove those extra pillows on the headrest of the chair. They make your neck hurt by pushing your head forward. We flew on two other planes that did not have that feature and the seats were very comfortable. The crew members were very nice, and the pizza twists were really good.

Scandinavian Airlines

7.4

Good

1,781 reviews

Scandinavian Airlines

7.4

Good

1,781 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Mar 2026

CPH - ORD

Icelandair

7.0

Good

656 reviews

Scandinavian Airlines

7.4

Good

1,781 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Mar 2026

CPH - ORD

British Airways

6.7

Okay

7,988 reviews

Scandinavian Airlines

7.4

Good

1,781 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Mar 2026

CPH - ORD

Related info for your journey

How long is the flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
Icelandair, KLM, and Scandinavian Airlines can get you from London Heathrow Airport to Reykjavik Keflavik Intl Airport in just under 3h 20m. Your travel time can differ by up to 12h. There are 1177 mi between London Heathrow Airport and Reykjavik Keflavik Intl Airport. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport round-trip?
Flying on Icelandair is currently your cheapest option to Reykjavik Keflavik Intl Airport, with prices starting at £120. Additional return tickets that might be worth considering are offered by British Airways and Scandinavian Airlines, with the lowest prices starting at £126 and £189, respectively. These flights start at 50% lower than the current average price 3 months from now.
What are the most reliable airlines from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
The top 3 most reliable airlines when flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport are TAP AIR PORTUGAL (87%), Japan Airlines (85%) and Qatar Airways (84%).
What are the cheapest flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
While on average a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport is generally £857, our data shows the cheapest flight currently is £86. When looking at the most popular route, (London Heathrow - Reykjavik Keflavik Intl), you can expect to pay £161 for that flight.
Can I find deals for flights from Heathrow to Keflavik Intl that include hotel bookings?
Yes. In addition to deals on Heathrow to Keflavik Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Keflavik Intl?
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.
Can I find deals for business class flights from Heathrow to Keflavik Intl?
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.
What is the cheapest month to book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport (average of £143). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of £356). 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.

See more FAQs

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Keflavik

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Luton to Keflavik Intl flights

Southend to Keflavik Intl flights

Top 3 airlines flying from Heathrow to Keflavik Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£120	Average£261	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£126	Average£243	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Scandinavian Airlines	Cheapest£189	Average£353	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights

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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.

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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.

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Cheap flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport from £82

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 18 May 2026.

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 18 May 2026.

Best flights from Heathrow to Keflavik IntlDiscover carefully curated flight deals from Heathrow to Keflavik Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 May 2026.

Discover carefully curated flight deals from Heathrow to Keflavik Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 May 2026.

Direct flights from Heathrow to Keflavik IntlExplore direct flight options from Heathrow to Keflavik Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 May 2026.

Explore direct flight options from Heathrow to Keflavik Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 May 2026.

Last-minute flights from Heathrow to Keflavik IntlDiscover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 18 May 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 18 May 2026 and is based on user searches.

One-way flights from Heathrow to Keflavik IntlSearch for one-way flight options from Heathrow to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated 18 May 2026.

Search for one-way flight options from Heathrow to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated 18 May 2026.

Find flight deals from Heathrow to Keflavik Intl

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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?

How often are flights from London to Reykjavik delayed?

What is the most punctual flight time for London to Reykjavik flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on London to Reykjavik flights?

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?

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Alternative routes for Heathrow to Keflavik Intl

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Complete your trip

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

Direct flights to Iceland

Book a non-stop flight to one of these other cities located in Iceland.

Search flights from Heathrow to Keflavik Intl by cabin class

Find flights from Heathrow to Keflavik Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Keflavik Intl

Explore flights to Keflavik Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 May 2026.

Heathrow and Keflavik Intl flights

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Top 3 airlines flying from Heathrow to Keflavik Intl

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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 18 May 2026.

Best flights from Heathrow to Keflavik Intl
Discover carefully curated flight deals from Heathrow to Keflavik Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 May 2026.

Direct flights from Heathrow to Keflavik Intl
Explore direct flight options from Heathrow to Keflavik Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 May 2026.

Last-minute flights from Heathrow to Keflavik Intl
Discover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 18 May 2026 and is based on user searches.

One-way flights from Heathrow to Keflavik Intl
Search for one-way flight options from Heathrow to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated 18 May 2026.