Cheap flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport from £56
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 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
8 Feb — 15 Feb1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Reykjavik Keflavik Intl are usually found in January or November, booked 69 days in advance, depart on a Thursday or Sunday and return on a Friday
Cheap 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 January 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 January 2026.
Mon 27/413:05LHR - KEF
Nonstop3h 10mIcelandair
Fri 1/516:10KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£97
Tue 20/120:35LHR - KEF
Nonstop3h 20mIcelandair
Fri 23/116:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£111
Sat 7/220:35LHR - KEF
Nonstop3h 20mIcelandair
Sat 14/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£115
Thu 5/220:35LHR - KEF
Nonstop3h 20mIcelandair
Thu 12/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£116
Tue 27/120:35LHR - KEF
Nonstop3h 20mIcelandair
Fri 30/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£118
Sun 22/212:15LHR - KEF
Nonstop3h 15mIcelandair
Sun 1/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£118
Fri 6/220:35LHR - KEF
Nonstop3h 20mIcelandair
Tue 10/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£120
Thu 26/220:35LHR - KEF
Nonstop3h 20mIcelandair
Mon 2/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 7/1£120
Fri 24/421:25LHR - KEF
Nonstop3h 10mIcelandair
Wed 29/416:10KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£121
Sun 1/212:15LHR - KEF
Nonstop3h 15mIcelandair
Fri 6/216:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£122
Best flights from Heathrow to Keflavik Intl
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 January 2026.
Tue 24/212:15LHR - KEF
Nonstop3h 15mIcelandair
Wed 4/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£132
Sat 18/415:35LHR - KEF
1 stop19h 15mScandinavian Airlines
Sun 26/417:05KEF - LHR
1 stop15h 15mScandinavian Airlines
Deal found 8/1£158
Sat 2/507:25LHR - KEF
1 stop17h 45mLufthansa
Thu 7/514:10KEF - LHR
1 stop7h 00mLufthansa
Deal found 8/1£167
Thu 26/220:35LHR - KEF
Nonstop3h 20mIcelandair
Mon 2/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£132
Wed 25/220:35LHR - KEF
Nonstop3h 20mIcelandair
Thu 5/316:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£132
Mon 6/419:30LHR - KEF
1 stop15h 10mScandinavian Airlines
Wed 15/411:15KEF - LHR
1 stop6h 35mScandinavian Airlines
Deal found 7/1£159
Sun 1/312:15LHR - KEF
Nonstop3h 15mIcelandair
Sat 7/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£132
Mon 13/421:05LHR - KEF
2 stops14h 20mScandinavian Airlines
Sat 18/418:35KEF - LHR
1 stop14h 00mScandinavian Airlines
Deal found 8/1£164
Wed 22/421:05LHR - KEF
2 stops14h 20mScandinavian Airlines
Wed 29/411:15KEF - LHR
1 stop6h 35mScandinavian Airlines
Deal found 8/1£165
Mon 6/421:25LHR - KEF
Nonstop3h 10mIcelandair
Wed 15/416:10KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£166
Fri 1/519:50LHR - KEF
1 stop13h 55mScandinavian Airlines
Wed 6/510:30KEF - LHR
1 stop6h 10mScandinavian Airlines
Deal found 8/1£167
Direct flights from Heathrow to Keflavik Intl
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 January 2026.
Mon 27/413:05LHR - KEF
Nonstop3h 10mIcelandair
Fri 1/516:10KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£97
Tue 20/120:35LHR - KEF
Nonstop3h 20mIcelandair
Fri 23/116:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£111
Sat 7/220:35LHR - KEF
Nonstop3h 20mIcelandair
Sat 14/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£115
Thu 5/220:35LHR - KEF
Nonstop3h 20mIcelandair
Thu 12/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£116
Tue 27/120:35LHR - KEF
Nonstop3h 20mIcelandair
Fri 30/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£118
Sun 22/212:15LHR - KEF
Nonstop3h 15mIcelandair
Sun 1/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£118
Fri 6/220:35LHR - KEF
Nonstop3h 20mIcelandair
Tue 10/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£120
Thu 26/220:35LHR - KEF
Nonstop3h 20mIcelandair
Mon 2/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 7/1£120
Fri 24/421:25LHR - KEF
Nonstop3h 10mIcelandair
Wed 29/416:10KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£121
Sun 1/212:15LHR - KEF
Nonstop3h 15mIcelandair
Fri 6/216:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£122
Last-minute flights from Heathrow to Keflavik Intl
Discover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 9 January 2026 and is based on user searches.
Tue 13/120:35LHR - KEF
Nonstop3h 20mIcelandair
Sat 17/116:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 7/1£184
Wed 14/120:35LHR - KEF
Nonstop3h 20mIcelandair
Wed 21/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£155
Thu 15/107:25LHR - KEF
Nonstop3h 20mBritish Airways
Sat 7/211:55KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 8/1£208
Fri 16/120:35LHR - KEF
Nonstop3h 20mIcelandair
Thu 22/116:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 8/1£128
Fri 16/120:35LHR - KEF
Nonstop3h 20mIcelandair
Wed 21/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£163
Fri 16/107:35LHR - KEF
Nonstop3h 20mBritish Airways
Fri 13/311:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 8/1£166
Fri 16/107:35LHR - KEF
Nonstop3h 20mBritish Airways
Sat 24/111:55KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 8/1£190
Fri 16/120:35LHR - KEF
Nonstop3h 20mIcelandair
Sat 24/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 8/1£199
Fri 16/113:45LHR - KEF
1 stop23h 35mSWISS
Sat 24/114:20KEF - LHR
1 stop27h 30mSWISS
Deal found 8/1£207
Fri 16/120:35LHR - KEF
Nonstop3h 20mMultiple Airlines
Tue 20/111:30KEF - LHR
1 stop7h 00mMultiple Airlines
Deal found 8/1£210
Sat 17/120:35LHR - KEF
Nonstop3h 20mMultiple Airlines
Sun 18/111:30KEF - LHR
1 stop6h 10mMultiple Airlines
Deal found 8/1£194
Sun 18/107:20LHR - KEF
Nonstop3h 20mBritish Airways
Thu 22/111:45KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 8/1£154
One-way flights from Heathrow to Keflavik Intl
Search for one-way flight options from Heathrow to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated 9 January 2026.
Tue 20/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 7/1£56
Wed 14/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 7/1£62
Fri 16/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 7/1£64
Thu 29/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 8/1£65
Wed 18/220:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 8/1£70
Fri 13/320:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 8/1£71
Sun 19/421:25LHR - KEF
Nonstop3h 10mIcelandair
Deal found 8/1£72
Fri 27/220:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 8/1£74
Wed 11/220:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 8/1£75
Wed 4/320:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 8/1£77
Cheapflights Fare Finder
Customise your flight search to find flights from Heathrow 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 858,174 searches. Data last updated 9 January 2026.
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
Heathrow
Fly to
Keflavik Intl
Route
Depart
Return
Price
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Tue 24/2
12:15-15:30
Nonstop3h 15m
Reykjavik Keflavik Intl
Wed 4/3
07:35-10:50
Nonstop3h 15m
£132
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Thu 26/2
20:35-23:55
Nonstop3h 20m
Reykjavik Keflavik Intl
Mon 2/3
07:35-10:50
Nonstop3h 15m
£132
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Wed 25/2
20:35-23:55
Nonstop3h 20m
Reykjavik Keflavik Intl
Thu 5/3
16:20-19:30
Nonstop3h 10m
£132
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sun 1/3
12:15-15:30
Nonstop3h 15m
Reykjavik Keflavik Intl
Sat 7/3
07:35-10:50
Nonstop3h 15m
£132
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sat 18/4
15:35-09:50
1 stop19h 15m
Reykjavik Keflavik Intl
Sun 26/4
17:05-09:20
1 stop15h 15m
£158
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Mon 6/4
19:30-09:40
1 stop15h 10m
Reykjavik Keflavik Intl
Wed 15/4
11:15-18:50
1 stop6h 35m
£159
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Mon 13/4
21:05-10:25
2 stops14h 20m
Reykjavik Keflavik Intl
Sat 18/4
18:35-09:35
1 stop14h 00m
£164
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Wed 22/4
21:05-10:25
2 stops14h 20m
Reykjavik Keflavik Intl
Wed 29/4
11:15-18:50
1 stop6h 35m
£165
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Mon 6/4
21:25-23:35
Nonstop3h 10m
Reykjavik Keflavik Intl
Wed 15/4
16:10-20:20
Nonstop3h 10m
£166
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sat 2/5
07:25-00:10
1 stop17h 45m
Reykjavik Keflavik Intl
Thu 7/5
14:10-22:10
1 stop7h 00m
£167
Flights are sorted by cheapest return flights first.
Deals found on 8/1
Showing 1-10 of 21 results
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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.
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 Heathrow Airport to Reykjavik Keflavik Intl Airport
Prices
Airlines
Delays
How far ahead should I book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
Use this chart to determine the optimal time to book a return flight from Heathrow to Keflavik Intl. Price data was last updated on 2 January 2026.
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 69 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 £61). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £201). 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?
Find hourly flight availability from Heathrow 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 9 January 2026.
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 much does it cost for a return flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
Weekly flight availability from London Heathrow Airport to Reykjavik Keflavik Intl Airport
Explore weekly flight availability from Heathrow 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 9 January 2026.
The most flights from LHR to KEF are scheduled on a Tuesday (13 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).
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 117 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 evening 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 past year, British Airways have had the lowest number of delays on this route, with just 7% 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 January 2026.
Check out reviews from past customers who have flown with Scandinavian Airlines, Icelandair, andeasyJet 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.
When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
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.
How long is the flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
Icelandair and Scandinavian Airlines can get you from London Heathrow Airport to Reykjavik Keflavik Intl Airport in just under 3h 15m. Your travel time can differ by up to 16h. There are 1177 mi between London Heathrow Airport and Reykjavik Keflavik Intl Airport. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport round-trip?
Flying on easyJet is currently your cheapest option to Reykjavik Keflavik Intl Airport, with prices starting at £49. Additional return tickets that might be worth considering are offered by British Airways and Icelandair, with the lowest prices starting at £118 and £119, respectively. These flights start at 77% lower than the current average price 3 months from now.
What are the most reliable airlines from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
The top 3 most reliable airlines when flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport are Qatar Airways (92%), Turkish Airlines (90%) and American Airlines (90%).
What are the cheapest flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?
While on average a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport is generally £910, our data shows the cheapest flight currently is £81. When looking at the most popular route, (London Heathrow - Reykjavik Keflavik Intl), you can expect to pay £97 for that flight.
Can I find deals for business class flights from Heathrow to Keflavik Intl?
Yes. Cheapflights offers flight deals from Heathrow 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 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 £61). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £201). 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.
Explore flights to Keflavik Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 January 2026.
Top 4 airlines flying from Heathrow to Keflavik Intl
Discover the top 4 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 858,174 searches. Data last updated 9 January 2026.
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 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.
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