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Cheap flights from London to Reykjavik Keflavik Intl Airport from $142

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 22/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KEF
5 Jun — 12 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Keflavik Intl

Enter your travel dates to find the best prices.

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 6 May 2026.

Sun 14/606:25
LTN
-
KEF
Nonstop3h 05m
easyJet
Fri 26/619:30
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 4/5$279
Mon 30/1107:00
LGW
-
KEF
1 stop9h 40m
easyJet
Thu 3/1218:05
KEF
-
LGW
Nonstop3h 10m
easyJet
Deal found 6/5$279
Fri 26/616:30
LTN
-
KEF
Nonstop3h 05m
easyJet
Sat 4/719:20
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 4/5$280
Fri 13/1106:15
LGW
-
KEF
1 stop12h 50m
easyJet
Thu 19/1118:05
KEF
-
LGW
Nonstop3h 10m
easyJet
Deal found 5/5$283
Mon 22/617:45
LTN
-
KEF
Nonstop3h 05m
easyJet
Sat 4/719:20
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 4/5$284
Sun 13/906:25
LTN
-
KEF
Nonstop3h 05m
easyJet
Sun 20/909:10
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 5/5$286
Thu 10/1213:55
LGW
-
KEF
Nonstop3h 20m
easyJet
Mon 14/1217:30
KEF
-
LGW
1 stop14h 40m
easyJet
Deal found 6/5$289
Mon 15/617:45
LTN
-
KEF
Nonstop3h 05m
easyJet
Mon 22/620:30
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 4/5$291
Sat 27/616:35
LTN
-
KEF
Nonstop3h 05m
easyJet
Mon 6/720:30
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 4/5$293
Fri 19/616:30
LTN
-
KEF
Nonstop3h 05m
easyJet
Fri 26/619:30
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 2/5$294
Wed 14/1006:15
LTN
-
KEF
Nonstop3h 05m
easyJet
Wed 21/1009:00
KEF
-
LTN
Nonstop2h 55m
easyJet
Deal found 5/5$296
Mon 16/1107:00
LGW
-
KEF
1 stop9h 40m
easyJet
Thu 19/1118:05
KEF
-
LGW
Nonstop3h 10m
easyJet
Deal found 2/5$296

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 6 May 2026.

Round-trip from

$279

One-way from

$142

Popular in

August

Cheapest in

November

Average price

$316

Good one-way deal

$293 or less
easyJet
  • easyJet
  • 14/6-26/6
  • Nonstop
  • 6h 00m total
  • London to Reykjavik
Search Deals
easyJet
  • easyJet
  • 22/6
  • Nonstop
  • 3h 05m total
  • London to Reykjavik
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($191 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a one-way flight from London (LON) to Reykjavik Keflavik Intl.
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 6 May 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 return flight

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Fri 26/6

20:00-07:50

1 stop12h 50m

Reykjavik Keflavik Intl

Sat 4/7

19:20-23:15

Nonstop2h 55m

$287
Fastest return journey

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Wed 9/9

06:15-08:20

Nonstop3h 05m

Reykjavik Keflavik Intl

Sun 13/9

09:10-13:05

Nonstop2h 55m

$296

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Wed 9/9

06:15-08:20

Nonstop3h 05m

Reykjavik Keflavik Intl

Wed 23/9

08:20-16:55

1 stop7h 35m

$304

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Mon 22/6

19:40-07:50

1 stop13h 10m

Reykjavik Keflavik Intl

Fri 26/6

19:30-23:25

Nonstop2h 55m

$311

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Sun 6/9

06:25-08:30

Nonstop3h 05m

Reykjavik Keflavik Intl

Sun 13/9

09:10-13:05

Nonstop2h 55m

$316

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Fri 10/7

16:30-18:35

Nonstop3h 05m

Reykjavik Keflavik Intl

Mon 13/7

20:30-00:25

Nonstop2h 55m

$335

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Wed 14/10

09:00-17:45

1 stop9h 45m

Reykjavik Keflavik Intl

Wed 21/10

18:45-08:35

1 stop12h 50m

$354

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Sun 5/7

06:25-08:30

Nonstop3h 05m

Reykjavik Keflavik Intl

Fri 10/7

19:30-23:25

Nonstop2h 55m

$358

LondonReykjavik

STN - KEF

STNKEF

London Stansted

Sat 13/6

10:45-18:20

1 stop8h 35m

Reykjavik Keflavik Intl

Mon 15/6

18:25-07:50

1 stop12h 25m

$360

LondonReykjavik

STN - KEF

STNKEF

London Stansted

Tue 9/6

11:10-19:15

1 stop9h 05m

Reykjavik Keflavik Intl

Fri 12/6

19:25-08:00

1 stop11h 35m

$364

Flights are sorted by cheapest return flights first.

Deals found on 4/5

Showing 1-10 of 60 resultsSorted by cheapest first
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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 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 to Reykjavik Keflavik Intl Airport

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

To ensure you get the cheapest price possible for a flight from London to Reykjavik Keflavik Intl Airport, you should look to book at least 90 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 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 $70). Flying from London to Reykjavik Keflavik Intl Airport in October is currently the most expensive (average of $1,246). 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 6 May 2026.

When flying from London to Reykjavik Keflavik Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 35% versus a flight in the afternoon.

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 6 May 2026.

The most flights from LON to KEF are scheduled on a Monday (27 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (9 on average).

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

How often are flights from London to Reykjavik delayed?

About 10% 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?

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

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?

    There are many flights that can get you from London to Reykjavik Keflavik Intl Airport in 3h 05m. Fly via easyJet, Icelandair, or British Airways to get the fastest option. Airlines will cover a distance of 1860 km. Most flights are nonstop.

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

    Cheapflights users have booked flights from London to Reykjavik Keflavik Intl Airport round-trip from $267. Users have found that Icelandair is 21% cheaper than the other options available to this destination.

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

    Most travellers choose London Luton - Reykjavik Keflavik Intl, London Stansted - Reykjavik Keflavik Intl or London Southend - Reykjavik Keflavik Intl when deciding on the best route from London to Reykjavik Keflavik Intl Airport.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Reykjavik Keflavik Intl Airport on time: Qatar Airways (89%), TAP AIR PORTUGAL (88%), Emirates (86%).

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

    On average you can expect to pay $326 for a flight from London to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $274 while the most popular route, (London Luton - Reykjavik Keflavik Intl) is currently priced at $127.

  • 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 holiday 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 $70). Flying from London to Reykjavik Keflavik Intl Airport in October is currently the most expensive (average of $1,246). 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

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.

Top airline flying from London to Keflavik Intl

Discover the top airline 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 647,157 searches. Data last updated 6 May 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$267Average$376FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

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 London to Keflavik Intl?

Cheapflights makes it easy to find London to Keflavik Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Keflavik Intl for you. Better yet — we are completely free to use.

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

Yes! Cheapflights helps users easily find flights from London to Keflavik Intl with no change fees.

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

Yes! Start tracking prices for London 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.

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