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Keflavik Intl

$96+ Cheap flights from Heathrow (LHR) to Keflavik Intl (KEF)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
mar. 31 — abr. 71
lun. 3/31
lun. 4/7
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Reykjavik Keflavik Intl are usually found in January or February, booked 43 days in advance, depart on a Thursday or Tuesday and return on a Sunday

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 marzo 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(oojo)

One-way from

$102
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$244

Good round-trip deal

$283 or less

Good one-way deal

$231 or less
Provider with most accurate pricing for London Heathrow-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Reykjavik Keflavik Intl flights.
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From London Heathrow to Reykjavik Keflavik Intl
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One-way flight from London Heathrow to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 21% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from London Heathrow to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from London Heathrow to Reykjavik Keflavik Intl.
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Find flight deals from Heathrow to Keflavik Intl

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 marzo 26, 2025.

This oojo deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/79:25 pmLHR - KEF
Nonstop3h 10mIcelandair
mié. 5/214:10 pmKEF - LHR
Nonstop3h 10mIcelandair
Deal found 3/24$160
This British Airways deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/187:35 amLHR - KEF
Nonstop3h 20mBritish Airways
mié. 11/1911:45 amKEF - LHR
Nonstop3h 15mBritish Airways
Deal found 3/25$162
This Mytrip deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/227:50 pmLHR - KEF
1 stop15h 25mScandinavian Airlines
mar. 4/299:40 amKEF - LHR
1 stop10h 55mScandinavian Airlines
Deal found 3/25$171
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/167:20 amLHR - KEF
Nonstop3h 20mMultiple Airlines
lun. 11/173:10 pmKEF - LHR
1 stop6h 25mMultiple Airlines
Deal found 3/25$188
This Lufthansa deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/119:30 amLHR - KEF
1 stop15h 05mLufthansa
dom. 5/1812:25 amKEF - LHR
1 stop6h 15mLufthansa
Deal found 3/24$263
This SWISS deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/218:05 pmLHR - KEF
1 stop13h 15mSWISS
jue. 5/299:05 amKEF - LHR
1 stop11h 40mSWISS
Deal found 3/24$319

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated marzo 26, 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

mié. 5/7

9:25 pm-11:35 pm

Nonstop3h 10m

Reykjavik Keflavik Intl

mié. 5/21

4:10 pm-8:20 pm

Nonstop3h 10m

$160

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mar. 4/22

7:50 pm-10:15 am

1 stop15h 25m

Reykjavik Keflavik Intl

mar. 4/29

9:40 am-9:35 pm

1 stop10h 55m

$171

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mié. 4/23

7:55 am-10:00 am

Nonstop3h 05m

Reykjavik Keflavik Intl

dom. 4/27

10:20 am-2:30 pm

Nonstop3h 10m

$184

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mar. 4/22

9:25 pm-11:35 pm

Nonstop3h 10m

Reykjavik Keflavik Intl

mar. 4/29

9:40 am-4:25 pm

1 stop5h 45m

$205

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

dom. 5/11

9:30 am-11:35 pm

1 stop15h 05m

Reykjavik Keflavik Intl

dom. 5/18

12:25 am-7:40 am

1 stop6h 15m

$263

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mié. 5/21

8:05 pm-8:20 am

1 stop13h 15m

Reykjavik Keflavik Intl

jue. 5/29

9:05 am-9:45 pm

1 stop11h 40m

$319

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

vie. 8/29

7:30 pm-11:20 pm

1 stop28h 50m

Reykjavik Keflavik Intl

dom. 9/21

12:10 am-8:20 am

1 stop7h 10m

$368

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mié. 4/23

9:25 pm-11:35 pm

Nonstop3h 10m

$96

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

jue. 6/12

7:50 pm-7:05 am

1 stop12h 15m

$103

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

lun. 4/21

7:40 am-9:45 am

Nonstop3h 05m

$115

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 16 results
1
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Compare providers for flights from Heathrow to Keflavik Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Keflavik Intl in March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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 round-trip flight from Heathrow to Keflavik Intl. Price data was last updated on March 21, 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport, you should look to book at least 43 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport (average of $328). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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 marzo 26, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 43% on flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport by exploring options for tickets in the afternoon.

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 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

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 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 marzo 26, 2025.
See what other customers who have flown with SWISS, Scandinavian Airlines and TAP AIR PORTUGAL from London to Reykjavik have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,569 reviews

Overall

7.5

Boarding

7.6

Comfort

7.3

Entertainment

6.7

Food

7.0

Crew

8.2

Reviews

1 / 20
6.0
Good

Be,Oct 2023

FCO - ZRH

Very crowded flight. Staff brought refreshments regularly and the food was surprisingly good. But checking was very slow and they allowed way too many people with large suitcases on board making onboarding and off-boarding very slow and chaotic.
SWISS
7.5
Good
1,569 reviews
SWISS
7.5
Good
1,569 reviews

Overall

7.5

Boarding

7.6

Comfort

7.3

Entertainment

6.7

Food

7.0

Crew

8.2

Reviews

1 / 20
6.0
Good

Be,Oct 2023

FCO - ZRH

Very crowded flight. Staff brought refreshments regularly and the food was surprisingly good. But checking was very slow and they allowed way too many people with large suitcases on board making onboarding and off-boarding very slow and chaotic.
Scandinavian Airlines
7.3
Good
1,325 reviews
SWISS
7.5
Good
1,569 reviews

Overall

7.5

Boarding

7.6

Comfort

7.3

Entertainment

6.7

Food

7.0

Crew

8.2

Reviews

1 / 20
6.0
Good

Be,Oct 2023

FCO - ZRH

Very crowded flight. Staff brought refreshments regularly and the food was surprisingly good. But checking was very slow and they allowed way too many people with large suitcases on board making onboarding and off-boarding very slow and chaotic.
TAP AIR PORTUGAL
7.1
Good
1,825 reviews
SWISS
7.5
Good
1,569 reviews

Overall

7.5

Boarding

7.6

Comfort

7.3

Entertainment

6.7

Food

7.0

Crew

8.2

Reviews

1 / 20
6.0
Good

Be,Oct 2023

FCO - ZRH

Very crowded flight. Staff brought refreshments regularly and the food was surprisingly good. But checking was very slow and they allowed way too many people with large suitcases on board making onboarding and off-boarding very slow and chaotic.
Icelandair
7.0
Good
474 reviews
SWISS
7.5
Good
1,569 reviews

Overall

7.5

Boarding

7.6

Comfort

7.3

Entertainment

6.7

Food

7.0

Crew

8.2

Reviews

1 / 20
6.0
Good

Be,Oct 2023

FCO - ZRH

Very crowded flight. Staff brought refreshments regularly and the food was surprisingly good. But checking was very slow and they allowed way too many people with large suitcases on board making onboarding and off-boarding very slow and chaotic.
Lufthansa
6.7
Okay
6,950 reviews
SWISS
7.5
Good
1,569 reviews

Overall

7.5

Boarding

7.6

Comfort

7.3

Entertainment

6.7

Food

7.0

Crew

8.2

Reviews

1 / 20
6.0
Good

Be,Oct 2023

FCO - ZRH

Very crowded flight. Staff brought refreshments regularly and the food was surprisingly good. But checking was very slow and they allowed way too many people with large suitcases on board making onboarding and off-boarding very slow and chaotic.

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?

    Cheapflights users have booked flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport round-trip from $160. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from $171, and British Airways, from $184. Icelandair is 41% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport one-way?

    $102 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Scandinavian Airlines and British Airways, with prices starting from $103 and $115, respectively.

  • 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 (98%), American Airlines (93%) and Qantas Airways (93%).

  • What are the cheapest flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

    Looking at all options, your cheapest flight can be booked for $107. While the most popular route (London Heathrow - Reykjavik Keflavik Intl) can be booked for $325 on average our data indicates $1,158 when flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport.

  • Can I find deals for flights from Heathrow to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on Heathrow to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Keflavik Intl.

  • 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport (average of $328). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Keflavik

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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.
Gatwick to Keflavik Intl flights

Top 2 airlines flying from Heathrow to Keflavik Intl

Discover the top 2 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 2,558,603 searches. Data last updated marzo 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$153Average$234FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$156Average$286FlexibilityNo cancel feeOn-time76%
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