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Keflavik Intl

$70+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
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 November, booked 69 days in advance, depart on a Friday or Monday and return on a Tuesday

Cheap 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 enero 27, 2026.

This Mytrip deal was found by Cheapflights users on 1/25. 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.
mié. 3/118:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
mié. 3/184:20 pm
KEF
-
LHR
Nonstop3h 10m
Icelandair
Deal found 1/25$161
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/158:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
mié. 3/184:20 pm
KEF
-
LHR
Nonstop3h 10m
Icelandair
Deal found 1/25$166
This Mytrip deal was found by Cheapflights users on 1/26. 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.
mié. 2/48:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
mié. 2/114:20 pm
KEF
-
LHR
Nonstop3h 10m
Icelandair
Deal found 1/26$167
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/148:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
sáb. 3/217:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 1/27$168
This Mytrip deal was found by Cheapflights users on 1/27. 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.
vie. 3/138:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
vie. 3/204:20 pm
KEF
-
LHR
Nonstop3h 10m
Icelandair
Deal found 1/27$169
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/238:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
jue. 2/267:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 1/25$172
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/128:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
jue. 3/267:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 1/27$175
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/58:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
lun. 3/97:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 1/25$179
This Icelandair deal was found by Cheapflights users on 1/25. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/28:35 pm
LHR
-
KEF
Nonstop3h 20m
Icelandair
jue. 2/57:35 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 1/25$180
This Icelandair deal was found by Cheapflights users on 1/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/249:25 pm
LHR
-
KEF
Nonstop3h 10m
Icelandair
lun. 4/277:40 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 1/27$183
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/299:25 pm
LHR
-
KEF
Nonstop3h 10m
Icelandair
lun. 5/47:40 am
KEF
-
LHR
Nonstop3h 15m
Icelandair
Deal found 1/25$184

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 enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$161
(Mytrip)

One-way from

$70

Popular in

July

Cheapest in

January

Average price

$202

Good round-trip deal

$388 or less

Good one-way deal

$264 or less
Provider with most accurate pricing for London Heathrow-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Reykjavik Keflavik Intl flights.
Search Deals
From London Heathrow to Reykjavik Keflavik Intl
Search Deals
One-way flight from London Heathrow to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from London Heathrow to Reykjavik Keflavik Intl.
Search Deals

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 enero 27, 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

lun. 4/6

10:20 am-4:15 pm

1 stop6h 55m

Reykjavik Keflavik Intl

mié. 4/15

11:15 am-9:35 pm

1 stop9h 20m

$234

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

lun. 4/6

6:40 am-4:15 pm

1 stop10h 35m

Reykjavik Keflavik Intl

vie. 4/10

7:55 am-2:35 pm

1 stop5h 40m

$234

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mié. 4/8

9:05 pm-10:25 am

2 stops14h 20m

Reykjavik Keflavik Intl

lun. 4/13

11:15 am-6:50 pm

1 stop6h 35m

$245

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mié. 4/8

7:05 am-4:15 pm

2 stops10h 10m

Reykjavik Keflavik Intl

dom. 4/12

10:40 am-9:35 pm

1 stop9h 55m

$257

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

vie. 4/17

7:30 pm-9:40 am

1 stop15h 10m

Reykjavik Keflavik Intl

mar. 4/28

10:30 am-9:35 pm

2 stops10h 05m

$274

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

lun. 5/11

7:50 pm-10:25 am

1 stop15h 35m

Reykjavik Keflavik Intl

vie. 5/15

5:05 pm-9:20 am

1 stop15h 15m

$275

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

mié. 5/27

9:25 pm-11:35 pm

Nonstop3h 10m

$103

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

sáb. 3/7

8:35 pm-11:55 pm

Nonstop3h 20m

$108

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

dom. 3/1

8:35 pm-11:55 pm

Nonstop3h 20m

$110

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

lun. 2/23

8:35 pm-11:55 pm

Nonstop3h 20m

$110

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 14 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 January 23, 2026.

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 69 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport (average of $83). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $270). 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 enero 27, 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.

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 enero 27, 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport, such as Icelandair and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.1
Good
603 reviews

Food

6.2

Boarding

7.2

Entertainment

7.0

Comfort

7.0

Overall

7.1

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.
Icelandair
7.1
Good
603 reviews
Icelandair
7.1
Good
603 reviews

Food

6.2

Boarding

7.2

Entertainment

7.0

Comfort

7.0

Overall

7.1

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.
British Airways
6.7
Okay
7,702 reviews
Icelandair
7.1
Good
603 reviews

Food

6.2

Boarding

7.2

Entertainment

7.0

Comfort

7.0

Overall

7.1

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.

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?

    Scandinavian Airlines can get you from London Heathrow Airport to Reykjavik Keflavik Intl Airport in just under 6h 55m. Your travel time can differ by up to . The distance between London Heathrow Airport and Reykjavik Keflavik Intl Airport is about 1177 mi.

  • 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 $169. Another airline that can offer you cheap pricing is Icelandair. British Airways is 41% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 TAP AIR PORTUGAL (88%), Icelandair (85%) and Emirates (85%).

  • 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 $119. While the most popular route (London Heathrow - Reykjavik Keflavik Intl) can be booked for $162 on average, our data indicates $781 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport (average of $83). Flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $270). 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 Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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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 enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$169Average$377FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$190Average$373FlexibilityNo cancel feeOn-time76%

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