Cheap flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport from £61
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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
27 Jan — 3 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 13 days in advance, depart on a Sunday or Thursday and return on a Friday
Cheap flight deals from Heathrow to Keflavik Intl
Enter your travel dates to find the best prices.
Cheapest flights from Heathrow to Keflavik Intl
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 28 December 2025.
Mon 29/1217:30LHR - KEF
1 stop17h 30mScandinavian Airlines
Sun 11/117:35KEF - LHR
1 stop15h 45mScandinavian Airlines
Deal found 26/12£194
Sun 28/1213:40LHR - KEF
Nonstop3h 25mBritish Airways
Fri 6/311:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£309
Mon 29/1219:50LHR - KEF
1 stop15h 10mMultiple Airlines
Sat 10/116:20KEF - LHR
Nonstop3h 10mMultiple Airlines
Deal found 27/12£317
Mon 29/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Sun 4/111:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£338
Wed 31/1215:35LHR - KEF
1 stop19h 10mMultiple Airlines
Thu 8/120:00KEF - LHR
1 stop11h 40mMultiple Airlines
Deal found 27/12£345
Mon 29/1217:30LHR - KEF
1 stop17h 30mScandinavian Airlines
Thu 8/111:30KEF - LHR
1 stop7h 00mScandinavian Airlines
Deal found 27/12£347
Sun 28/1215:35LHR - KEF
2 stops19h 10mMultiple Airlines
Fri 6/316:20KEF - LHR
Nonstop3h 10mMultiple Airlines
Deal found 27/12£353
Mon 29/1219:50LHR - KEF
1 stop15h 10mMultiple Airlines
Thu 8/116:20KEF - LHR
Nonstop3h 10mMultiple Airlines
Deal found 27/12£358
Mon 29/1219:50LHR - KEF
1 stop15h 10mScandinavian Airlines
Sat 10/111:25KEF - LHR
2 stops31h 25mScandinavian Airlines
Deal found 27/12£358
Wed 31/1215:35LHR - KEF
1 stop19h 10mScandinavian Airlines
Fri 9/111:30KEF - LHR
1 stop6h 10mScandinavian Airlines
Deal found 27/12£364
Wed 31/1207:30LHR - KEF
Nonstop3h 20mBritish Airways
Sat 10/111:55KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£366
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 28 December 2025.
Fri 23/113:50LHR - KEF
Nonstop3h 25mBritish Airways
Tue 3/211:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 25/12£136
Wed 27/506:40LHR - KEF
1 stop10h 35mScandinavian Airlines
Fri 5/607:55KEF - LHR
1 stop7h 30mScandinavian Airlines
Deal found 25/12£170
Tue 5/507:50LHR - KEF
Nonstop3h 05mBritish Airways
Tue 12/510:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 25/12£146
Sat 2/507:05LHR - KEF
Nonstop3h 05mBritish Airways
Wed 13/510:55KEF - LHR
Nonstop3h 15mBritish Airways
Deal found 27/12£166
Mon 13/417:00LHR - KEF
1 stop17h 40mScandinavian Airlines
Fri 17/417:05KEF - LHR
1 stop19h 30mScandinavian Airlines
Deal found 25/12£186
Fri 1/507:35LHR - KEF
Nonstop3h 05mBritish Airways
Thu 7/510:30KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 26/12£166
Sat 2/507:05LHR - KEF
Nonstop3h 05mBritish Airways
Tue 12/510:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£166
Wed 4/307:30LHR - KEF
Nonstop3h 20mBritish Airways
Sun 8/311:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 26/12£173
Fri 1/507:35LHR - KEF
Nonstop3h 05mBritish Airways
Sun 3/510:20KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 25/12£173
Sun 25/113:40LHR - KEF
Nonstop3h 25mBritish Airways
Wed 28/111:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£180
Mon 19/107:35LHR - KEF
Nonstop3h 20mBritish Airways
Sat 24/111:55KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£187
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 28 December 2025.
Sat 28/220:35LHR - KEF
Nonstop3h 20mIcelandair
Fri 6/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 26/12£109
Sat 28/220:35LHR - KEF
Nonstop3h 20mIcelandair
Sat 7/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 26/12£110
Fri 27/220:35LHR - KEF
Nonstop3h 20mIcelandair
Fri 6/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 26/12£113
Mon 19/120:35LHR - KEF
Nonstop3h 20mIcelandair
Wed 28/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 25/12£113
Mon 2/320:35LHR - KEF
Nonstop3h 20mIcelandair
Sat 7/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 26/12£124
Sat 28/220:35LHR - KEF
Nonstop3h 20mIcelandair
Sun 8/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 26/12£125
Sat 28/220:35LHR - KEF
Nonstop3h 20mIcelandair
Mon 9/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 26/12£126
Sun 1/307:20LHR - KEF
Nonstop3h 20mBritish Airways
Fri 6/311:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 26/12£127
Fri 27/220:35LHR - KEF
Nonstop3h 20mIcelandair
Sun 8/307:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 26/12£129
Thu 29/120:35LHR - KEF
Nonstop3h 20mIcelandair
Tue 3/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 27/12£130
Fri 23/113:50LHR - KEF
Nonstop3h 25mBritish Airways
Fri 30/111:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 26/12£130
Last-minute flights from Heathrow to Keflavik Intl
Discover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 28 December 2025 and is based on user searches.
Sun 4/107:20LHR - KEF
Nonstop3h 20mBritish Airways
Tue 13/111:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£135
Mon 12/120:35LHR - KEF
Nonstop3h 20mMultiple Airlines
Thu 15/111:45KEF - LHR
Nonstop3h 10mMultiple Airlines
Deal found 26/12£141
Mon 19/120:35LHR - KEF
Nonstop3h 20mIcelandair
Wed 28/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 25/12£113
Mon 19/107:35LHR - KEF
Nonstop3h 20mBritish Airways
Wed 28/111:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 27/12£141
Wed 21/120:35LHR - KEF
Nonstop3h 20mIcelandair
Wed 28/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 25/12£128
Wed 21/107:30LHR - KEF
Nonstop3h 20mBritish Airways
Fri 30/111:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 25/12£136
Fri 23/113:50LHR - KEF
Nonstop3h 25mBritish Airways
Fri 30/111:50KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 26/12£130
Sat 24/120:35LHR - KEF
Nonstop3h 20mIcelandair
Tue 3/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 25/12£143
Sun 25/120:35LHR - KEF
Nonstop3h 20mIcelandair
Wed 28/107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 25/12£133
Thu 29/120:35LHR - KEF
Nonstop3h 20mIcelandair
Tue 3/207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 27/12£130
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 28 December 2025.
Wed 14/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 27/12£61
Wed 8/407:55LHR - KEF
Nonstop3h 05mBritish Airways
Deal found 26/12£62
Tue 20/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 28/12£67
Sat 31/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 27/12£67
Thu 29/120:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 27/12£71
Sun 1/220:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 27/12£81
Tue 3/220:35LHR - KEF
Nonstop3h 20mIcelandair
Deal found 27/12£82
Sun 22/313:40LHR - KEF
Nonstop3h 25mBritish Airways
Deal found 26/12£84
Sun 18/107:20LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 27/12£84
Sun 4/107:20LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 26/12£85
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 28 December 2025.
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 28 December 2025.
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
Fri 23/1
13:50-17:15
Nonstop3h 25m
Reykjavik Keflavik Intl
Tue 3/2
11:50-15:00
Nonstop3h 10m
£136
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Tue 5/5
07:50-09:55
Nonstop3h 05m
Reykjavik Keflavik Intl
Tue 12/5
10:50-15:00
Nonstop3h 10m
£146
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sat 2/5
07:05-09:10
Nonstop3h 05m
Reykjavik Keflavik Intl
Wed 13/5
10:55-15:10
Nonstop3h 15m
£166
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Fri 1/5
07:35-09:40
Nonstop3h 05m
Reykjavik Keflavik Intl
Thu 7/5
10:30-14:40
Nonstop3h 10m
£166
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sat 2/5
07:05-09:10
Nonstop3h 05m
Reykjavik Keflavik Intl
Tue 12/5
10:50-15:00
Nonstop3h 10m
£166
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Wed 27/5
06:40-16:15
1 stop10h 35m
Reykjavik Keflavik Intl
Fri 5/6
07:55-16:25
1 stop7h 30m
£170
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Wed 4/3
07:30-10:50
Nonstop3h 20m
Reykjavik Keflavik Intl
Sun 8/3
11:50-15:00
Nonstop3h 10m
£173
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Fri 1/5
07:35-09:40
Nonstop3h 05m
Reykjavik Keflavik Intl
Sun 3/5
10:20-14:30
Nonstop3h 10m
£173
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sun 25/1
13:40-17:05
Nonstop3h 25m
Reykjavik Keflavik Intl
Wed 28/1
11:50-15:00
Nonstop3h 10m
£180
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Mon 13/4
17:00-09:40
1 stop17h 40m
Reykjavik Keflavik Intl
Fri 17/4
17:05-13:35
1 stop19h 30m
£186
Flights are sorted by cheapest return flights first.
Deals found on 27/12
Showing 1-10 of 19 results
1
2
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
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 26 December 2025.
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 13 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 £76). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £199). 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 28 December 2025.
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?
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 28 December 2025.
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.
Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
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?
British Airways can get you from London Heathrow Airport to Reykjavik Keflavik Intl Airport in just under 3h 25m. Your travel time will be generally consistent. There are 1177 mi between London Heathrow Airport and Reykjavik Keflavik Intl Airport. All flights are typically direct.
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 £48. Additional return tickets that might be worth considering are offered by British Airways and Icelandair, with the lowest prices starting at £117 and £120, 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 Japan Airlines (100%), Qatar Airways (95%) and TAP AIR PORTUGAL (95%).
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 £933, our data shows the cheapest flight currently is £107. When looking at the most popular route, (London Heathrow - Reykjavik Keflavik Intl), you can expect to pay £124 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 £76). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £199). 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 28 December 2025.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 28 December 2025.
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 28 December 2025.
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.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.