Cheap flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport from £76
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Heathrow to Keflavik Intl
Cheapest flights from Heathrow to Keflavik IntlExplore 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 9 October 2026.
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 9 October 2026.
Best flights from Heathrow to Keflavik IntlDiscover carefully curated flight deals from Heathrow to Keflavik Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.
Discover carefully curated flight deals from Heathrow to Keflavik Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.
Direct flights from Heathrow to Keflavik IntlExplore direct flight options from Heathrow to Keflavik Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 October 2026.
Explore direct flight options from Heathrow to Keflavik Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 October 2026.
Last-minute flights from Heathrow to Keflavik IntlDiscover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 9 October 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 9 October 2026 and is based on user searches.
One-way flights from Heathrow to Keflavik IntlSearch for one-way flight options from Heathrow to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.
Search for one-way flight options from Heathrow to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.
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 9 October 2026.
Cheapflights Fare Finder
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
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Sat 31/10
07:35-10:50
Nonstop3h 15m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Fri 13/11
07:35-10:50
Nonstop3h 15m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Fri 4/12
07:25-10:40
Nonstop3h 15m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Thu 12/11
07:25-10:40
Nonstop3h 15m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Tue 3/11
07:35-10:50
Nonstop3h 15m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Sun 3/1
13:40-17:00
Nonstop3h 20m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Thu 7/1
07:25-10:40
Nonstop3h 15m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Fri 27/11
15:15-17:15
1 stop26h 00m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Sat 7/11
15:35-11:40
1 stop20h 05m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
LondonReykjavik
LHR London Heathrow - KEF Reykjavik Keflavik Intl
LHRKEF
London Heathrow
Fri 27/11
13:45-17:05
Nonstop3h 20m
Reykjavik Keflavik Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
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.
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?
The price you pay for your flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 £161). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £379). 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?
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 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 108 minutes.
What is the most punctual flight time for London to Reykjavik flights?
Historically, flights departing in the evening 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 Saturday 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 10% of flights being delayed.
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 9 October 2026.
Check out reviews from past customers who have flown with Scandinavian Airlines,Icelandair, andBritish Airways from London Heathrow Airport 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.
Overall
Boarding
Entertainment
Food
Comfort
Crew
Reviews
Neville,Sept 2026
FCO - CPH
Overall
Boarding
Entertainment
Food
Comfort
Crew
Reviews
Neville,Sept 2026
FCO - CPH
Overall
Boarding
Entertainment
Food
Comfort
Crew
Reviews
Neville,Sept 2026
FCO - CPH
Overall
Boarding
Entertainment
Food
Comfort
Crew
Reviews
Neville,Sept 2026
FCO - CPH
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.
Travelling to a place near Reykjavik Keflavik Intl Airport?
Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locationsBrowse thousands of different options on Cheapflights for your next trip
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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.
Complete your trip
Complete your trip to Keflavik Intl by adding a car hire and/or hotel booking to your travel itinerary.
Direct flights to Iceland
Book a non-stop flight to one of these other cities located in Iceland.
Search flights from Heathrow to Keflavik Intl by cabin class
Find flights from Heathrow to Keflavik Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Keflavik Intl
Explore flights to Keflavik Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.
Heathrow and Keflavik Intl flights
Browse other Heathrow and Keflavik Intl flight options. Last updated on 9 October 2026.
Other flights from Heathrow
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers in 2026
Top 3 airlines flying from Heathrow to Keflavik Intl
Discover the top 3 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 7,457,451 searches. Data last updated 9 October 2026.
Fly with Cheapflights
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How does Cheapflights help users find flights from Heathrow to Keflavik Intl?
When you search for this flight from Heathrow to Keflavik Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Keflavik Intl?
Cheapflights helps you find that perfect flight to Keflavik Intl from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Heathrow to Keflavik Intl with no change fees?
Need flexible booking options for your flight to Keflavik Intl from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to Keflavik Intl become cheaper?
Yes! Start tracking prices for Heathrow 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.