LON - KEF

$139 Find Cheap Flights from London to Reykjavik

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Keflavik Intl departing on 23/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Reykjavik Keflavik Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Reykjavik, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Reykjavik, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
$229
Overall average: $208
easyJet
Wed 9/9Sun 20/9
LTN - KEF • Direct
Cheapest one-way flight
$137
easyJet
Mon 23/3
LTN - KEF • Direct
Advice from real travellers
AI-powered summary based on content written by KAYAK users. AI can make mistakes.
Pack snacks as Icelandair has no free in-flight food.
Avoid costly cabs; use London's transit system instead.
User tips
User tips
User tips
User tips
Direct flights
You can fly direct with British Airways, Icelandair, and easyJet. Average duration is 3h 16m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest • 35% average savings
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 93% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 57% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Keflavik Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from London to Keflavik Intl (LON-KEF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Keflavik Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Keflavik Intl

Wed, 9 Sep - Sun, 20 Sep
easyJet Logo
06:15 - 08:20
LTN
-
KEF
3h 05mdirect
easyJet Logo
09:10 - 13:05
KEF
-
LTN
2h 55mdirect
$229easyJet
Sun, 30 Aug - Wed, 16 Sep
easyJet Logo
06:25 - 08:30
LTN
-
KEF
3h 05mdirect
easyJet Logo
09:00 - 12:55
KEF
-
LTN
2h 55mdirect
$232easyJet
Mon, 20 Apr - Wed, 29 Apr
British Airways Logo
07:40 - 09:45
LHR
-
KEF
3h 05mdirect
British Airways Logo
11:00 - 15:10
KEF
-
LHR
3h 10mdirect
$265British Airways
Fri, 17 Apr - Tue, 28 Apr
Icelandair Logo
21:25 - 23:35
LHR
-
KEF
3h 10mdirect
Icelandair Logo
07:40 - 11:55
KEF
-
LHR
3h 15mdirect
$276Icelandair
Tue, 14 Apr - Wed, 22 Apr
British Airways Logo
07:50 - 09:55
LHR
-
KEF
3h 05mdirect
British Airways Logo
11:00 - 15:10
KEF
-
LHR
3h 10mdirect
$278British Airways
Fri, 17 Apr - Tue, 28 Apr
Icelandair Logo
21:25 - 23:35
LHR
-
KEF
3h 10mdirect
Icelandair Logo
07:40 - 11:55
KEF
-
LHR
3h 15mdirect
$279Icelandair
Mon, 27 Apr - Mon, 4 May
Multiple Airlines Logo
08:25 - 16:45
STN
-
KEF
9h 20m
1 stop
Multiple Airlines Logo
17:25 - 07:35
KEF
-
STN
13h 10m
1 stop
$334Multiple Airlines
Thu, 16 Apr - Mon, 20 Apr
KLM Logo
09:20 - 18:15
LCY
-
KEF
9h 55m
1 stop
KLM Logo
08:35 - 17:20
KEF
-
LCY
7h 45m
1 stop
$335KLM
Mon, 27 Apr - Mon, 4 May
Multiple Airlines Logo
06:45 - 08:15
STN
-
KEF
26h 30m
2 stops
Multiple Airlines Logo
17:25 - 07:35
KEF
-
STN
13h 10m
1 stop
$336Multiple Airlines
Sun, 14 Jun - Thu, 18 Jun
KLM Logo
20:45 - 07:35
LCY
-
KEF
11h 50m
1 stop
KLM Logo
19:15 - 07:55
KEF
-
LCY
11h 40m
1 stop
$428KLM
Booking Insights

KAYAK's insights & trends for London to Keflavik Intl flights

Get data-powered insights and trends into flights from London to Keflavik Intl to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London to Reykjavik Keflavik Intl Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Reykjavik Keflavik Intl Airport departing in September.

What is the cheapest London to Reykjavik Keflavik Intl Airport flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to Reykjavik Keflavik Intl Airport costs $308 on the route between London Stansted Airport (STN) and Reykjavik Keflavik Intl Airport (KEF). Over the past month, this route was, on average, 35% cheaper than other London-Reykjavik Keflavik Intl Airport routes. The most popular route is between London Heathrow Airport (LHR) and Reykjavik Keflavik Intl Airport (KEF).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Reykjavik Keflavik Intl Airport is November, where tickets cost $147 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $537 and $528 respectively.

Can I save money by flying with a stopover from London to Reykjavik Keflavik Intl Airport?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at $348 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London to Reykjavik Keflavik Intl Airport, you should book around 2 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonFebruary
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly and prices are also 57% lower on average.

When to book flights from London to Keflavik Intl

Are your dates flexible? Find out the best times to travel from London to Keflavik Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from London to Keflavik Intl: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from London to Keflavik Intl 
Verified travelerFlew with Icelandair
LGW
-
KEF
Feb 2025
Pack snacks. Expensive restaurants and no in flight food unless ordered.
JonFlew with Icelandair
LGW
-
KEF
June 2024
Understanding the transit system. Something we had not done. So we took a cab that sat in a lot of traffic and cost us a lot of time and money when we could have taken the tube for very little cost and half time time

FAQs for booking London to Reykjavik flights

  • What is the cheapest flight from London to Reykjavik Keflavik Intl Airport?

    In the last 3 days, the lowest price for a flight from London to Reykjavik Keflavik Intl Airport was $137 for a one-way ticket and $229 for a return.

  • Which aircraft models fly most regularly from London to Reykjavik?

    The Boeing 777 is the aircraft model that flies most regularly on the London to Reykjavik flight route.

  • On which days can I fly direct from London to Reykjavik?

    There are direct flights from London to Reykjavik on a daily basis.

  • How does KAYAK find such low prices on flights from London to Reykjavik?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Reykjavik.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Reykjavik?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from London is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Reykjavik?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Reykjavik with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Reykjavik?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London to Reykjavik Keflavik Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $327 or less one-way.

Prefer to fly direct from London to Reykjavik Keflavik Intl?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London to Reykjavik Keflavik Intl.
Find which airlines fly direct from London to Reykjavik Keflavik Intl Airport, which days they fly and book direct flights.

Direct departures

London to Reykjavik Keflavik Intl

Monday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

Tuesday

British Airways,Icelandair

British Airways,Icelandair

Wednesday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

Thursday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

Friday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

Saturday

British Airways,Icelandair

British Airways,Icelandair

Sunday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

See more direct flights

Direct returns

Reykjavik Keflavik Intl to London

Monday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

Tuesday

British Airways,Icelandair

British Airways,Icelandair

Wednesday

British Airways,Icelandair,Jet2, +1 more

British Airways,Icelandair, +2 more

Thursday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

Friday

British Airways,Icelandair,easyJet

British Airways,Icelandair, +1 more

Saturday

British Airways,Icelandair

British Airways,Icelandair

Sunday

British Airways,Icelandair,Jet2, +1 more

British Airways,Icelandair, +2 more

See more direct flights

Everything you need to know for your flight from London to Keflavik Intl

Information on your arrival and departure airports