LON - KEF

$123 Find Cheap Flights from London to Reykjavik-Keflavik Airport

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 27/11. 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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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

Tue, 9 Dec - Fri, 12 Dec
easyJet Logo
07:00 - 10:15LTN-KEF
3h 15mdirect
easyJet Logo
19:40 - 22:40KEF-LTN
3h 00mdirect
$171easyJet
Find Deal
Mon, 2 Mar - Mon, 9 Mar
easyJet Logo
07:40 - 11:10LGW-KEF
3h 30mdirect
easyJet Logo
12:00 - 15:10KEF-LGW
3h 10mdirect
$171easyJet
Find Deal
Sun, 9 Nov - Wed, 12 Nov
Jet2 Logo
07:15 - 10:15STN-KEF
3h 00mdirect
Jet2 Logo
11:15 - 14:10KEF-STN
2h 55mdirect
$239Jet2
Find Deal
Sat, 6 Dec - Sat, 13 Dec
British Airways Logo
07:35 - 10:55LHR-KEF
3h 20mdirect
British Airways Logo
11:55 - 15:05KEF-LHR
3h 10mdirect
$244British Airways
Find Deal
Sat, 24 Jan - Thu, 29 Jan
Icelandair Logo
20:35 - 23:55LHR-KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50KEF-LHR
3h 15mdirect
$259Icelandair
Find Deal
Sat, 17 Jan - Fri, 23 Jan
Icelandair Logo
20:35 - 23:55LHR-KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50KEF-LHR
3h 15mdirect
$260Icelandair
Find Deal
Wed, 26 Nov - Thu, 4 Dec
British Airways Logo
07:30 - 10:50LHR-KEF
3h 20mdirect
British Airways Logo
11:45 - 14:55KEF-LHR
3h 10mdirect
$274British Airways
Find Deal
Sat, 13 Dec - Sat, 20 Dec
Multiple Airlines Logo
20:35 - 23:55LHR-KEF
3h 20mdirect
Multiple Airlines Logo
19:30 - 09:35KEF-LHR
14h 05m1 stop
$292Multiple Airlines
Find Deal
Tue, 20 Jan - Thu, 22 Jan
Multiple Airlines Logo
08:50 - 14:55STN-KEF
6h 05m1 stop
Multiple Airlines Logo
09:25 - 15:55KEF-STN
6h 30m1 stop
$317Multiple Airlines
Find Deal
Wed, 18 Mar - Sun, 22 Mar
Jet2 Logo
07:15 - 10:15STN-KEF
3h 00mdirect
Jet2 Logo
11:15 - 14:10KEF-STN
2h 55mdirect
$356Jet2
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by KAYAK users
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
Top routes
LTN-KEF
Cheapest • 40% average savings
LHR-KEF
Most popular
Insights
Insights
Insights
Insights
When to book
5 weeks
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 51% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
$171
Overall average: $239
easyJet
Tue 9/12Fri 12/12
LTN - KEF • Direct
Cheapest one-way flight
$123
Typical prices: $91-$263
easyJet
Thu 27/11
LTN - KEF • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Keflavik Intl!
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.

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 absolute cheapest return flight from London to Reykjavik Keflavik Intl Airport costs $140 on the route between London Luton Airport (LTN) and Reykjavik Keflavik Intl Airport (KEF). However, over the past month, flights between London Stansted Airport (STN) and Reykjavik Keflavik Intl Airport (KEF) were, on average, 40% 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 January, where tickets cost $158 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $518 and $475 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 $370 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 5 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Find deals

Good to know

Low seasonJune
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly and prices are also 41% 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 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with IcelandairLGW-KEFFeb 2025
Pack snacks. Expensive restaurants and no in flight food unless ordered.
JonFlew with IcelandairLGW-KEFJune 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-Keflavik Airport 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 $123 for a one-way ticket and $171 for a return.

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

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

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

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

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

    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-Keflavik Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik-Keflavik Airport 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-Keflavik Airport?

    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-Keflavik Airport 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-Keflavik Airport?

    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-Keflavik Airport 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 $286 or less one-way and $396 or less round-trip.

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, easyJet

British Airways, Icelandair, +1 more

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, easyJet

British Airways, Icelandair, +1 more

Sunday

British Airways, Icelandair, Jet2, +1 more

British Airways, Icelandair, +2 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, easyJet

British Airways, Icelandair, +1 more

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, easyJet

British Airways, Icelandair, +1 more

Sunday

British Airways, Icelandair, Jet2, +1 more

British Airways, Icelandair, +2 more

See more direct flights

Reviews of the top airline flying from London to Keflavik Intl

 
See real verified KAYAK customer reviews for airlines flying from London to Reykjavik. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Keflavik Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
IcelandairOverall score based on 562 reviews
6.9Comfort
7.0Entertainment
6.2Food
7.2Boarding
8.1Crew
Airline reviews

It was too cold in the plane my feet froze

8.0 ExcellentDavid, Oct 2025MCO - KEF
Read more Icelandair reviews

It was too cold in the plane my feet froze

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

It was good. The air plane is clean and staff were friendly.

The crew was wonderful at check in, the gate and on board. Felt the luggage had more room than the passengers. The seats were smaller than most domestic U.S. airlines. I'm only 5'2" and I had little legroom. There were only 2 bathrooms in coach. Needed more. The flight was very smooth but not the most comfortable.

There was no lounge at Boston for us to use. Typically flying first class overseas comes with lounge privileges. The seats did not recline even a little. My headset only worked on one side. I felt like I was flying on Ryan Air, not Icelandic Air.

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

Information on your arrival and departure airports

Keflavik Intl (KEF)

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