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Keflavik Intl

$126+ Cheap flights from London (LON) 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.
LON — KEF
Jul 21 — Jul 281
Tue 7/21
Tue 7/28
1 adult, Economy
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Cheapflights Tip: The best prices from London to Reykjavik Keflavik Intl are usually found in November or January, booked 90 days in advance, depart on a Sunday or Friday and return on a Thursday

Cheap flight deals from London to Keflavik Intl

Cheapest flights from London to Keflavik Intl
Explore the most affordable flight options available from London to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 21, 2026.

This KLM deal was found by Cheapflights users on 6/17. 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 11/176:30 am
LHR
-
KEF
1 stop7h 15m
KLM
Sat 11/212:45 pm
KEF
-
LHR
1 stop16h 55m
KLM
Deal found 6/17$251
This easyJet deal was found by Cheapflights users on 6/16. 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 easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:25 am
LTN
-
KEF
Nonstop3h 05m
easyJet
Sun 9/139:10 am
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 6/16$251
This KLM deal was found by Cheapflights users on 6/16. 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.
Sat 11/144:25 pm
LHR
-
KEF
1 stop21h 20m
KLM
Tue 11/242:45 pm
KEF
-
LHR
1 stop6h 05m
KLM
Deal found 6/16$252
This Booking.com deal was found by Cheapflights users on 6/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:40 am
LHR
-
KEF
1 stop10h 35m
Scandinavian Airlines
Sat 9/196:35 pm
KEF
-
LHR
1 stop20h 50m
Scandinavian Airlines
Deal found 6/16$254
This Expedia deal was found by Cheapflights users on 6/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:35 pm
LHR
-
KEF
Nonstop3h 20m
Multiple Airlines
Thu 11/196:05 pm
KEF
-
LHR
1 stop23h 35m
Multiple Airlines
Deal found 6/18$256
This Connections by easyJet deal was found by Cheapflights users on 6/18. 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:50 am
LTN
-
KEF
1 stop10h 15m
easyJet
Mon 11/307:35 pm
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 6/18$256
This easyJet deal was found by Cheapflights users on 6/19. 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 easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:25 pm
LGW
-
KEF
Nonstop3h 20m
easyJet
Thu 10/225:35 pm
KEF
-
LGW
Nonstop3h 15m
easyJet
Deal found 6/19$256
This easyJet deal was found by Cheapflights users on 6/17. 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 easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:25 am
LTN
-
KEF
Nonstop3h 05m
easyJet
Tue 10/2711:05 am
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 6/17$257
This Connections by easyJet deal was found by Cheapflights users on 6/18. 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:15 am
LGW
-
KEF
1 stop12h 50m
easyJet
Mon 11/3012:00 pm
KEF
-
LGW
Nonstop3h 10m
easyJet
Deal found 6/18$257
This easyJet deal was found by Cheapflights users on 6/17. 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 easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/192:20 pm
LGW
-
KEF
Nonstop3h 20m
easyJet
Mon 10/2612:00 pm
KEF
-
LGW
Nonstop3h 10m
easyJet
Deal found 6/17$259
This Connections by easyJet deal was found by Cheapflights users on 6/19. 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:25 pm
LGW
-
KEF
Nonstop3h 25m
easyJet
Sun 11/1511:05 am
KEF
-
LGW
1 stop9h 50m
easyJet
Deal found 6/19$260
This FlightHub deal was found by Cheapflights users on 6/19. 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.
Sat 11/146:40 am
LHR
-
KEF
1 stop9h 40m
Scandinavian Airlines
Tue 11/1712:10 pm
KEF
-
LHR
1 stop21h 25m
Scandinavian Airlines
Deal found 6/19$262

Find flight deals from London to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(KLM)

One-way from

$126
(British Airways)

Popular in

August

Cheapest in

November

Average price

$337

Good round-trip deal

$430 or less

Good one-way deal

$125 or less
Provider with most accurate pricing for London (LON)-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Reykjavik Keflavik Intl flights.
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From London (LON) to Reykjavik Keflavik Intl
Search Deals
One-way flight from London (LON) to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 31% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($15 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 (LON) to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from London (LON) to Reykjavik Keflavik Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London 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 21, 2026.
Use the filters below to find and compare flights from London to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Sun 8/23

6:25 am-8:30 am

Nonstop3h 05m

Reykjavik Keflavik Intl

Wed 8/26

8:20 am-10:25 pm

1 stop13h 05m

$263

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Wed 10/28

1:55 pm-5:15 pm

Nonstop3h 20m

Reykjavik Keflavik Intl

Sat 11/7

6:35 pm-9:45 pm

Nonstop3h 10m

$287
Quickest round-trip

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Wed 9/2

6:15 am-8:20 am

Nonstop3h 05m

Reykjavik Keflavik Intl

Wed 9/9

9:00 am-12:55 pm

Nonstop2h 55m

$296

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 10/8

7:50 pm-7:05 am

1 stop12h 15m

Reykjavik Keflavik Intl

Wed 10/21

5:05 pm-9:20 am

1 stop15h 15m

$306

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 11/5

5:00 pm-10:50 am

1 stop17h 50m

Reykjavik Keflavik Intl

Fri 11/13

6:05 pm-9:20 am

1 stop15h 15m

$313

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

$323

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

$343

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Tue 7/28

8:00 pm-7:40 am

1 stop12h 40m

Reykjavik Keflavik Intl

Tue 8/4

8:40 am-10:15 pm

1 stop12h 35m

$345

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 9/2

6:40 am-4:15 pm

1 stop10h 35m

Reykjavik Keflavik Intl

Wed 9/9

5:05 pm-9:20 am

1 stop15h 15m

$360

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 10/4

11:45 am-6:15 pm

1 stop7h 30m

Reykjavik Keflavik Intl

Sat 10/10

8:05 pm-7:40 am

1 stop10h 35m

$362

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 58 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on London-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-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-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-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 London to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from London 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 to Reykjavik Keflavik Intl Airport

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

Currently, January is the cheapest month in which you can book a flight from London to Reykjavik Keflavik Intl Airport (average of $50). Flying from London to Reykjavik Keflavik Intl Airport in November is currently the most expensive (average of $191). 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 LON to KEF?

Find hourly flight availability from London 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 21, 2026.

It’s optimal to fly from London to Reykjavik Keflavik Intl Airport in the afternoon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from London to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from London to Keflavik Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 21, 2026.

The most flights from LON to KEF are scheduled on a Friday (20 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from London to Reykjavik Keflavik Intl Airport?

How often are flights from London to Reykjavik delayed?

About 11% of weekly flights between London and Reykjavik have experienced delays in the past year, with the average delay time being 113 minutes.

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

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

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 Thursday has historically faced a higher average of delays compared to other days of the week.

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

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

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

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Reykjavik Keflavik Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Use this chart to determine the cheapest time to fly round-trip from London to Keflavik Intl. Price data was last updated on June 13, 2026.

Travelers seeking maximum savings on their London to Reykjavik Keflavik Intl Airport flight should consider departing on Friday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for London to Reykjavik Keflavik Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London to Reykjavik Keflavik Intl Airport trip
Our travel experts
Victoria M. Walker

Victoria M. Walker

Expert on PLAY

Victoria M. Walker is an award-winning travel reporter who writes the “Carrying On” newsletter. Victoria writes about airlines and hotels and fell in love with travel after her first flight in 2014. She was raised in Virginia and is based in Brooklyn, NY. She is interested in finding the best pizza and coffee in every city she visits.

Read more
Bill Fink

Bill Fink

Expert on Icelandair

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more

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 21, 2026.
Peruse reviews from past customers who have flown with Icelandair and easyJet from London 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.
Icelandair
7.0
Good
680 reviews

Food

6.2

Comfort

6.9

Boarding

7.2

Crew

8.0

Entertainment

6.9

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
680 reviews
Icelandair
7.0
Good
680 reviews

Food

6.2

Comfort

6.9

Boarding

7.2

Crew

8.0

Entertainment

6.9

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.
easyJet
6.9
Okay
1,910 reviews
Icelandair
7.0
Good
680 reviews

Food

6.2

Comfort

6.9

Boarding

7.2

Crew

8.0

Entertainment

6.9

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 London 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 to Reykjavik Keflavik Intl Airport?

    For as low as $251, easyJet can have you in Reykjavik Keflavik Intl Airport from London in 3h 05m. London and Reykjavik Keflavik Intl Airport are separated by a distance of 1156 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from London to Reykjavik Keflavik Intl Airport round-trip from $202. Another airline that can offer you cheap pricing is British Airways. Users have found that Icelandair is 21% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London to Reykjavik Keflavik Intl Airport one-way?

    The cheapest airline one-way is easyJet, with whom users have recently found tickets for as low as $78. However, be on the lookout for offers from Icelandair and British Airways, as they are both options that can get you from London to Reykjavik Keflavik Intl Airport for a low price.

  • What are the most popular routes from London to Reykjavik Keflavik Intl Airport?

    The most popular route from London to Reykjavik Keflavik Intl Airport is London Luton - Reykjavik Keflavik Intl. You may also consider London Gatwick - Reykjavik Keflavik Intl or London Heathrow - Reykjavik Keflavik Intl.

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

    No one likes to see their flight delayed. When booking a flight from London to Reykjavik Keflavik Intl Airport consider choosing Turkish Airlines (93%), Icelandair (93%) or Emirates (93%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from London to Reykjavik Keflavik Intl Airport? While on average our users pay $696, our data indicates the cheapest price to be $190. The most popular route (London Luton - Reykjavik Keflavik Intl), is priced around $92.

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

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

  • How can I find direct flights from London to Keflavik Intl?

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

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

    Yes. Cheapflights offers flight deals from London 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 to Reykjavik Keflavik Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from London to Reykjavik Keflavik Intl Airport (average of $50). Flying from London to Reykjavik Keflavik Intl Airport in November is currently the most expensive (average of $191). 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 London to Keflavik Intl

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

Top 2 airlines flying from London to Keflavik Intl

Discover the top 2 airlines that operate flights from London 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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$202Average$380FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$216Average$432FlexibilityNo cancel feeOn-time70%

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