Cheap flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport from £81
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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
23 Jun — 30 Jun1
Return
1 adult
Economy
Cheapflights Tip: The best prices from London Heathrow to Reykjavik Keflavik Intl are usually found in January or February, booked 81 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 18 June 2025.
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 18 June 2025.
Mon 24/1120:40LHR - KEF
Nonstop3h 15mIcelandair
Sat 29/1116:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 16/6£138
Wed 5/1115:35LHR - KEF
1 stop19h 10mScandinavian Airlines
Mon 10/1113:00KEF - LHR
1 stop5h 50mScandinavian Airlines
Deal found 16/6£142
Mon 10/1107:35LHR - KEF
Nonstop3h 20mBritish Airways
Thu 13/1111:40KEF - LHR
Nonstop3h 15mBritish Airways
Deal found 17/6£147
Wed 12/1107:30LHR - KEF
Nonstop3h 20mMultiple Airlines
Sun 16/1111:15KEF - LHR
1 stop7h 35mMultiple Airlines
Deal found 17/6£156
Thu 26/617:50LHR - KEF
1 stop7h 20mLufthansa
Sat 28/600:25KEF - LHR
1 stop6h 15mLufthansa
Deal found 15/6£206
Mon 8/920:05LHR - KEF
1 stop13h 30mSWISS
Tue 23/916:10KEF - LHR
1 stop24h 40mSWISS
Deal found 16/6£217
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 18 June 2025.
Mon 24/1120:40LHR - KEF
Nonstop3h 15mIcelandair
Sat 29/1116:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 16/6£138
Wed 5/1115:35LHR - KEF
1 stop19h 10mScandinavian Airlines
Mon 10/1113:00KEF - LHR
1 stop5h 50mScandinavian Airlines
Deal found 16/6£142
Mon 10/1107:35LHR - KEF
Nonstop3h 20mBritish Airways
Thu 13/1111:40KEF - LHR
Nonstop3h 15mBritish Airways
Deal found 17/6£147
Wed 12/1107:30LHR - KEF
Nonstop3h 20mMultiple Airlines
Sun 16/1111:15KEF - LHR
1 stop7h 35mMultiple Airlines
Deal found 17/6£156
Mon 30/606:00LHR - KEF
1 stop27h 35mSWISS
Tue 8/709:25KEF - LHR
1 stop21h 30mSWISS
Deal found 16/6£216
Fri 28/1106:35LHR - KEF
2 stops9h 10mLufthansa
Sun 30/1116:45KEF - LHR
1 stop16h 00mLufthansa
Deal found 16/6£221
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 18 June 2025.
Mon 24/1120:40LHR - KEF
Nonstop3h 15mIcelandair
Sat 29/1116:20KEF - LHR
Nonstop3h 10mIcelandair
Deal found 16/6£138
Mon 10/1107:35LHR - KEF
Nonstop3h 20mBritish Airways
Thu 13/1111:40KEF - LHR
Nonstop3h 15mBritish Airways
Deal found 17/6£147
Tue 25/1107:35LHR - KEF
Nonstop3h 20mMultiple Airlines
Thu 27/1116:20KEF - LHR
Nonstop3h 10mMultiple Airlines
Deal found 16/6£247
Last-minute flights from Heathrow to Keflavik Intl
Discover last-minute flight deals from Heathrow to Keflavik Intl. Data last updated 18 June 2025 and is based on user searches.
Thu 26/617:50LHR - KEF
1 stop7h 20mLufthansa
Sat 28/600:25KEF - LHR
1 stop6h 15mLufthansa
Deal found 15/6£206
Thu 26/607:35LHR - KEF
Nonstop3h 05mBritish Airways
Fri 4/710:30KEF - LHR
Nonstop3h 10mBritish Airways
Deal found 17/6£211
Thu 26/620:05LHR - KEF
1 stop13h 10mSWISS
Fri 4/709:05KEF - LHR
2 stops9h 15mSWISS
Deal found 17/6£285
Thu 26/621:25LHR - KEF
Nonstop3h 10mIcelandair
Sun 29/607:40KEF - LHR
Nonstop3h 15mIcelandair
Deal found 15/6£331
Thu 26/613:55LHR - KEF
1 stop11h 15mScandinavian Airlines
Fri 4/708:45KEF - LHR
1 stop6h 40mScandinavian Airlines
Deal found 16/6£354
Fri 27/620:05LHR - KEF
1 stop18h 55mMultiple Airlines
Sun 29/600:25KEF - LHR
1 stop6h 15mMultiple Airlines
Deal found 16/6£196
Wed 2/717:10LHR - KEF
1 stop16h 10mSWISS
Sun 6/700:45KEF - LHR
2 stops30h 30mSWISS
Deal found 16/6£232
Mon 28/721:25LHR - KEF
Nonstop3h 10mIcelandair
Wed 30/707:40KEF - LHR
Nonstop3h 15mIcelandair
Deal found 17/6£307
Thu 31/718:05LHR - KEF
1 stop7h 10mScandinavian Airlines
Wed 6/801:00KEF - LHR
1 stop7h 20mScandinavian Airlines
Deal found 16/6£285
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 18 June 2025.
Sat 6/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 17/6£81
Wed 8/1019:50LHR - KEF
1 stop15h 25mScandinavian Airlines
Deal found 16/6£83
Sat 4/1021:45LHR - KEF
1 stop11h 30mMultiple Airlines
Deal found 16/6£90
Sat 30/821:25LHR - KEF
Nonstop3h 10mIcelandair
Deal found 15/6£100
Thu 17/717:35LHR - KEF
1 stop6h 25mEurowings
Deal found 17/6£142
Wed 10/907:00LHR - KEF
2 stops26h 20mSWISS
Deal found 16/6£145
Sun 29/606:10LHR - KEF
1 stop19h 35mIberia
Deal found 15/6£172
Sat 11/1009:00LHR - KEF
2 stops15h 35mLufthansa
Deal found 17/6£180
Sat 12/720:50LHR - KEF
1 stop24h 05mVueling
Deal found 15/6£192
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 18 June 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
Mon 24/11
20:40-23:55
Nonstop3h 15m
Reykjavik Keflavik Intl
Sat 29/11
16:20-19:30
Nonstop3h 10m
£138
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Wed 5/11
15:35-10:45
1 stop19h 10m
Reykjavik Keflavik Intl
Mon 10/11
13:00-18:50
1 stop5h 50m
£142
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Mon 10/11
07:35-10:55
Nonstop3h 20m
Reykjavik Keflavik Intl
Thu 13/11
11:40-14:55
Nonstop3h 15m
£147
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Wed 12/11
07:30-10:50
Nonstop3h 20m
Reykjavik Keflavik Intl
Sun 16/11
11:15-18:50
1 stop7h 35m
£156
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Mon 8/9
20:05-08:35
1 stop13h 30m
Reykjavik Keflavik Intl
Tue 23/9
16:10-17:50
1 stop24h 40m
£217
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Fri 28/11
06:35-15:45
2 stops9h 10m
Reykjavik Keflavik Intl
Sun 30/11
16:45-08:45
1 stop16h 00m
£221
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sat 6/12
07:35-10:55
Nonstop3h 20m
£81
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Wed 8/10
19:50-10:15
1 stop15h 25m
£83
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sat 4/10
21:45-08:15
1 stop11h 30m
£90
LondonReykjavik
LHR - KEF
LHRKEF
London Heathrow
Sat 30/8
21:25-23:35
Nonstop3h 10m
£100
Flights are sorted by cheapest return flights first.
Deals found on 17/6
Showing 1-10 of 15 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
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 13 June 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 81 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 £75). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £289). 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 18 June 2025.
It’s typically best to fly out from London Heathrow Airport to Reykjavik Keflavik Intl Airport in the morning. Doing so could potentially save you 31% on the flight price compared to flying at midday, which is usually more expensive.
Rainfall in Keflavik Intl by month
Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 40.0 - 80.0 inches per month. January is typically the wettest month, when rainfall can reach 80.0 mm. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 40.0 mm.
Temperature in Keflavik Intl by month
Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 11.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).
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 18 June 2025.
To help decide which airline to fly from London to Reykjavik, see what other customers have to say about SWISS, Scandinavian Airlines and Vueling. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Flight was delayed 2 hours due to technical issues they were having at Zurich airport according to the swiss agent when I called. This caused my connection flight to be unviable. The swiss agent was helpful in finding me a partner airline to fulfill my need to get to final destination in eastern Europe. However, the only flight the agent was originally able to find me was a connecting flight through Frankfurt with a 7 hour layover and not only that but they didnt have space on the flight without upgrading me to a higher cabin class at my expense of 384 euro. I asked if this could be waived since the technical issues were not my fault from the beginning and the agent stated they arent. I ended up paying the extra 384 euro for the agent to call me back an hour later stating he found another flight through Munich with only an hour and a half layover which was great, but when I asked for the 384 euros to be refunded he stated that was included in the price difference for this flight and there was nothing he could do about that. I feel like I got scammed out of that 384 euros as that was a cabin upgrade for a flight I never ended up taking that was supposed to be my replacement for an error they were having on their end. I am grateful for the agent finding me replacement flights that worked in my favor time wise but not in being swindled out of extra charges. I also paid 85 USD to "pick my seats" (which honestly feels like a cash grab on behalf of airlines these days anyways) on my original swiss flight that I did not receive back either since I could not pick my seats on the replacement flights as well. Way to use flight delays for swindling your customers Swiss. Kayak was great as usual but I did not have any communications with Kayak directly for this ordeal it was all through Swiss airlines.
Flight was delayed 2 hours due to technical issues they were having at Zurich airport according to the swiss agent when I called. This caused my connection flight to be unviable. The swiss agent was helpful in finding me a partner airline to fulfill my need to get to final destination in eastern Europe. However, the only flight the agent was originally able to find me was a connecting flight through Frankfurt with a 7 hour layover and not only that but they didnt have space on the flight without upgrading me to a higher cabin class at my expense of 384 euro. I asked if this could be waived since the technical issues were not my fault from the beginning and the agent stated they arent. I ended up paying the extra 384 euro for the agent to call me back an hour later stating he found another flight through Munich with only an hour and a half layover which was great, but when I asked for the 384 euros to be refunded he stated that was included in the price difference for this flight and there was nothing he could do about that. I feel like I got scammed out of that 384 euros as that was a cabin upgrade for a flight I never ended up taking that was supposed to be my replacement for an error they were having on their end. I am grateful for the agent finding me replacement flights that worked in my favor time wise but not in being swindled out of extra charges. I also paid 85 USD to "pick my seats" (which honestly feels like a cash grab on behalf of airlines these days anyways) on my original swiss flight that I did not receive back either since I could not pick my seats on the replacement flights as well. Way to use flight delays for swindling your customers Swiss. Kayak was great as usual but I did not have any communications with Kayak directly for this ordeal it was all through Swiss airlines.
Flight was delayed 2 hours due to technical issues they were having at Zurich airport according to the swiss agent when I called. This caused my connection flight to be unviable. The swiss agent was helpful in finding me a partner airline to fulfill my need to get to final destination in eastern Europe. However, the only flight the agent was originally able to find me was a connecting flight through Frankfurt with a 7 hour layover and not only that but they didnt have space on the flight without upgrading me to a higher cabin class at my expense of 384 euro. I asked if this could be waived since the technical issues were not my fault from the beginning and the agent stated they arent. I ended up paying the extra 384 euro for the agent to call me back an hour later stating he found another flight through Munich with only an hour and a half layover which was great, but when I asked for the 384 euros to be refunded he stated that was included in the price difference for this flight and there was nothing he could do about that. I feel like I got scammed out of that 384 euros as that was a cabin upgrade for a flight I never ended up taking that was supposed to be my replacement for an error they were having on their end. I am grateful for the agent finding me replacement flights that worked in my favor time wise but not in being swindled out of extra charges. I also paid 85 USD to "pick my seats" (which honestly feels like a cash grab on behalf of airlines these days anyways) on my original swiss flight that I did not receive back either since I could not pick my seats on the replacement flights as well. Way to use flight delays for swindling your customers Swiss. Kayak was great as usual but I did not have any communications with Kayak directly for this ordeal it was all through Swiss airlines.
Flight was delayed 2 hours due to technical issues they were having at Zurich airport according to the swiss agent when I called. This caused my connection flight to be unviable. The swiss agent was helpful in finding me a partner airline to fulfill my need to get to final destination in eastern Europe. However, the only flight the agent was originally able to find me was a connecting flight through Frankfurt with a 7 hour layover and not only that but they didnt have space on the flight without upgrading me to a higher cabin class at my expense of 384 euro. I asked if this could be waived since the technical issues were not my fault from the beginning and the agent stated they arent. I ended up paying the extra 384 euro for the agent to call me back an hour later stating he found another flight through Munich with only an hour and a half layover which was great, but when I asked for the 384 euros to be refunded he stated that was included in the price difference for this flight and there was nothing he could do about that. I feel like I got scammed out of that 384 euros as that was a cabin upgrade for a flight I never ended up taking that was supposed to be my replacement for an error they were having on their end. I am grateful for the agent finding me replacement flights that worked in my favor time wise but not in being swindled out of extra charges. I also paid 85 USD to "pick my seats" (which honestly feels like a cash grab on behalf of airlines these days anyways) on my original swiss flight that I did not receive back either since I could not pick my seats on the replacement flights as well. Way to use flight delays for swindling your customers Swiss. Kayak was great as usual but I did not have any communications with Kayak directly for this ordeal it was all through Swiss airlines.
Flight was delayed 2 hours due to technical issues they were having at Zurich airport according to the swiss agent when I called. This caused my connection flight to be unviable. The swiss agent was helpful in finding me a partner airline to fulfill my need to get to final destination in eastern Europe. However, the only flight the agent was originally able to find me was a connecting flight through Frankfurt with a 7 hour layover and not only that but they didnt have space on the flight without upgrading me to a higher cabin class at my expense of 384 euro. I asked if this could be waived since the technical issues were not my fault from the beginning and the agent stated they arent. I ended up paying the extra 384 euro for the agent to call me back an hour later stating he found another flight through Munich with only an hour and a half layover which was great, but when I asked for the 384 euros to be refunded he stated that was included in the price difference for this flight and there was nothing he could do about that. I feel like I got scammed out of that 384 euros as that was a cabin upgrade for a flight I never ended up taking that was supposed to be my replacement for an error they were having on their end. I am grateful for the agent finding me replacement flights that worked in my favor time wise but not in being swindled out of extra charges. I also paid 85 USD to "pick my seats" (which honestly feels like a cash grab on behalf of airlines these days anyways) on my original swiss flight that I did not receive back either since I could not pick my seats on the replacement flights as well. Way to use flight delays for swindling your customers Swiss. Kayak was great as usual but I did not have any communications with Kayak directly for this ordeal it was all through Swiss airlines.
Flight was delayed 2 hours due to technical issues they were having at Zurich airport according to the swiss agent when I called. This caused my connection flight to be unviable. The swiss agent was helpful in finding me a partner airline to fulfill my need to get to final destination in eastern Europe. However, the only flight the agent was originally able to find me was a connecting flight through Frankfurt with a 7 hour layover and not only that but they didnt have space on the flight without upgrading me to a higher cabin class at my expense of 384 euro. I asked if this could be waived since the technical issues were not my fault from the beginning and the agent stated they arent. I ended up paying the extra 384 euro for the agent to call me back an hour later stating he found another flight through Munich with only an hour and a half layover which was great, but when I asked for the 384 euros to be refunded he stated that was included in the price difference for this flight and there was nothing he could do about that. I feel like I got scammed out of that 384 euros as that was a cabin upgrade for a flight I never ended up taking that was supposed to be my replacement for an error they were having on their end. I am grateful for the agent finding me replacement flights that worked in my favor time wise but not in being swindled out of extra charges. I also paid 85 USD to "pick my seats" (which honestly feels like a cash grab on behalf of airlines these days anyways) on my original swiss flight that I did not receive back either since I could not pick my seats on the replacement flights as well. Way to use flight delays for swindling your customers Swiss. Kayak was great as usual but I did not have any communications with Kayak directly for this ordeal it was all through Swiss airlines.
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.
What are the cheapest airlines flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport round-trip?
Flying on Icelandair is currently your cheapest option to Reykjavik Keflavik Intl Airport, with prices starting at £138. Additional return tickets that might be worth considering are offered by Scandinavian Airlines and British Airways, with the lowest prices starting at £142 and £147, respectively. These flights start at 33% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport one-way?
The cheapet airlines for a one-way flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport are British Airways (£81), Scandinavian Airlines (£83), and Icelandair (£100).
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 Emirates (100%), Turkish Airlines (90%) and American Airlines (89%).
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 £868, our data shows the cheapest flight currently is £133. When looking at the most popular route, (London Heathrow - Reykjavik Keflavik Intl), you can expect to pay £121 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 £75). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £289). 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 18 June 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 18 June 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.