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Keflavik Intl

$124+ Cheap flights from Heathrow (LHR) to Keflavik Intl (KEF)

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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
1 adult, Economy
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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 Friday and return on a Thursday

Cheap flight deals from Heathrow to Keflavik Intl

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 June 10, 2026.

This Icelandair deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1612:15 pm
LHR
-
KEF
Nonstop3h 15m
Icelandair
Tue 11/247:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 6/9$248
This KLM deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:25 pm
LHR
-
KEF
1 stop17h 20m
KLM
Sat 11/212:45 pm
KEF
-
LHR
1 stop16h 55m
KLM
Deal found 6/8$250
This KLM deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/266:30 am
LHR
-
KEF
1 stop7h 15m
KLM
Mon 11/302:45 pm
KEF
-
LHR
1 stop18h 15m
KLM
Deal found 6/8$252
This deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:25 pm
LHR
-
KEF
Nonstop3h 10m
Icelandair
Mon 8/37:40 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 6/10$253
This Orbitz deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:50 pm
LHR
-
KEF
1 stop22h 55m
Scandinavian Airlines
Sat 9/196:35 pm
KEF
-
LHR
1 stop14h 00m
Scandinavian Airlines
Deal found 6/8$255
This Icelandair deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:15 pm
LHR
-
KEF
Nonstop3h 15m
Icelandair
Sun 11/157:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 6/9$259
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:25 pm
LHR
-
KEF
Nonstop3h 10m
Icelandair
Sat 10/34:10 pm
KEF
-
LHR
Nonstop3h 10m
Icelandair
Deal found 6/9$261
This Icelandair deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
Thu 11/194:20 pm
KEF
-
LHR
Nonstop3h 10m
Icelandair
Deal found 6/9$262
This FlightHub deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:15 pm
LHR
-
KEF
Nonstop3h 15m
Icelandair
Fri 11/137:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 6/8$263
This Scandinavian Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:50 pm
LHR
-
KEF
1 stop12h 15m
Scandinavian Airlines
Sat 9/195:10 pm
KEF
-
LHR
1 stop15h 10m
Scandinavian Airlines
Deal found 6/9$265
This KLM deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:25 pm
LHR
-
KEF
1 stop17h 20m
KLM
Sun 11/222:45 pm
KEF
-
LHR
1 stop6h 05m
KLM
Deal found 6/9$266

Find flight deals from Heathrow to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$248
(Icelandair)

One-way from

$124
(British Airways)

Popular in

July

Cheapest in

January

Average price

$427

Good round-trip deal

$501 or less

Good one-way deal

$302 or less
Provider with most accurate pricing for London Heathrow-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Reykjavik Keflavik Intl flights.
Search Deals
From London Heathrow to Reykjavik Keflavik Intl
Search Deals
One-way flight from London Heathrow to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from London Heathrow to Reykjavik Keflavik Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Keflavik Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
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 round-trip

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 10/4

10:20 am-4:15 pm

1 stop6h 55m

Reykjavik Keflavik Intl

Sun 10/11

12:55 am-6:50 pm

1 stop16h 55m

$304

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 9/12

10:35 am-5:45 pm

1 stop8h 10m

Reykjavik Keflavik Intl

Thu 9/17

5:05 pm-9:20 am

1 stop15h 15m

$344

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Tue 11/3

6:40 pm-10:50 am

1 stop16h 10m

Reykjavik Keflavik Intl

Fri 11/6

6:05 pm-9:20 am

1 stop15h 15m

$347

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Tue 8/25

6:40 pm-9:40 am

1 stop16h 00m

Reykjavik Keflavik Intl

Sun 8/30

10:40 am-9:35 pm

1 stop9h 55m

$405

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Fri 7/24

6:40 am-4:50 pm

1 stop11h 10m

Reykjavik Keflavik Intl

Fri 8/7

6:25 pm-2:35 pm

1 stop19h 10m

$435

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 7/4

6:40 am-4:15 pm

1 stop10h 35m

Reykjavik Keflavik Intl

Tue 7/14

5:40 pm-9:20 am

1 stop14h 40m

$454
Quickest round-trip

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Tue 6/23

10:35 am-5:20 pm

1 stop7h 45m

Reykjavik Keflavik Intl

Tue 6/30

10:30 am-6:30 pm

1 stop7h 00m

$468

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 11/5

5:05 pm-10:50 am

2 stops17h 45m

Reykjavik Keflavik Intl

Wed 11/11

11:30 am-9:25 pm

2 stops9h 55m

$472

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 11/22

6:30 am-5:20 pm

2 stops10h 50m

Reykjavik Keflavik Intl

Fri 11/27

11:35 am-8:50 pm

2 stops9h 15m

$480

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Fri 7/10

10:35 am-5:35 pm

1 stop8h 00m

Reykjavik Keflavik Intl

Thu 7/16

10:45 am-9:35 pm

1 stop9h 50m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Heathrow to Keflavik Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Keflavik Intl in June.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.
Estimated round-trip 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

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

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport, you should look to book at least 52 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $191). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $478). 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?

Find hourly flight availability from Heathrow to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 10, 2026.

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 to fly round-trip from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated June 10, 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport, such as Icelandair and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.0
Good
672 reviews

Food

6.2

Boarding

7.2

Entertainment

6.9

Comfort

6.9

Crew

8.0

Overall

7.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Icelandair
7.0
Good
672 reviews
Icelandair
7.0
Good
672 reviews

Food

6.2

Boarding

7.2

Entertainment

6.9

Comfort

6.9

Crew

8.0

Overall

7.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
British Airways
6.7
Okay
8,044 reviews
Icelandair
7.0
Good
672 reviews

Food

6.2

Boarding

7.2

Entertainment

6.9

Comfort

6.9

Crew

8.0

Overall

7.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.

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?

    Icelandair and KLM can get you from London Heathrow Airport to Reykjavik Keflavik Intl Airport in just under 3h 15m. Your travel time can differ by up to 14h 05m. The distance between London Heathrow Airport and Reykjavik Keflavik Intl Airport is about 1177 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport round-trip from $206. Another airline that can offer you cheap pricing is British Airways. Icelandair is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 Emirates (91%), Air India (91%) and TAP AIR PORTUGAL (91%).

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

    Looking at all options, your cheapest flight can be booked for $179. While the most popular route (London Heathrow - Reykjavik Keflavik Intl) can be booked for $419 on average, our data indicates $1,334 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 vacation 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 $191). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $478). 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

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Alternative routes for Heathrow to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Keflavik Intl flights

Top 2 airlines flying from Heathrow to Keflavik Intl

Discover the top 2 airlines that operate flights from Heathrow to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$206Average$419FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$216Average$432FlexibilityNo cancel feeOn-time70%

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