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Keflavik Intl

$99+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
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 81 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 April 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Flightnetwork
3 stars

Round-trip from

$192
(British Airways)

One-way from

$99
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$302

Good round-trip deal

$326 or less

Good one-way deal

$434 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 ($74 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 April 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 April 15, 2025.

This British Airways deal was found by Cheapflights users on 4/14. 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.
Mon 11/177:35 amLHR - KEF
Nonstop3h 20mBritish Airways
Fri 11/216:45 pmKEF - LHR
Nonstop3h 00mBritish Airways
Deal found 4/14$161
This FlightHub deal was found by Cheapflights users on 4/14. 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.
Fri 11/218:40 pmLHR - KEF
Nonstop3h 15mIcelandair
Sun 11/237:35 amKEF - LHR
Nonstop3h 15mIcelandair
Deal found 4/14$185
This Scandinavian Airlines deal was found by Cheapflights users on 4/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1110:35 amLHR - KEF
1 stop5h 45mScandinavian Airlines
Thu 5/2211:05 amKEF - LHR
1 stop9h 30mScandinavian Airlines
Deal found 4/14$199
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Wed 5/77:55 amLHR - KEF
Nonstop3h 05mMultiple Airlines
Wed 5/2111:05 amKEF - LHR
1 stop6h 45mMultiple Airlines
Deal found 4/14$211
This Lufthansa deal was found by Cheapflights users on 4/14. 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.
Sat 5/105:30 pmLHR - KEF
1 stop7h 05mLufthansa
Sun 5/1112:25 amKEF - LHR
1 stop7h 15mLufthansa
Deal found 4/14$241
This SWISS deal was found by Cheapflights users on 4/14. 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.
Fri 5/91:45 pmLHR - KEF
1 stop25h 15mSWISS
Thu 5/159:05 amKEF - LHR
1 stop7h 45mSWISS
Deal found 4/14$246

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 April 15, 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

Wed 4/30

7:55 am-10:00 am

Nonstop3h 05m

Reykjavik Keflavik Intl

Fri 5/9

10:30 am-2:40 pm

Nonstop3h 10m

$192

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 9/20

9:25 pm-11:35 pm

Nonstop3h 10m

Reykjavik Keflavik Intl

Mon 9/22

7:40 am-11:55 am

Nonstop3h 15m

$199

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 5/18

10:35 am-3:20 pm

1 stop5h 45m

Reykjavik Keflavik Intl

Tue 5/20

10:20 am-5:40 pm

1 stop6h 20m

$207

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Mon 5/19

7:40 am-9:45 am

Nonstop3h 05m

Reykjavik Keflavik Intl

Wed 5/21

11:05 am-6:50 pm

1 stop6h 45m

$227

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 5/15

5:50 pm-12:10 am

1 stop7h 20m

Reykjavik Keflavik Intl

Fri 5/16

12:25 am-7:40 am

1 stop6h 15m

$239

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 5/1

8:55 am-2:00 pm

2 stops54h 05m

Reykjavik Keflavik Intl

Sat 5/10

2:50 pm-1:00 pm

1 stop21h 10m

$391

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 5/18

7:25 am-9:30 am

Nonstop3h 05m

$99

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Fri 5/9

9:25 pm-11:35 pm

Nonstop3h 10m

$108

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 5/18

10:35 am-3:20 pm

1 stop5h 45m

$110

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 10/11

9:45 pm-8:15 am

1 stop11h 30m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

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 April.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. eDreams >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 Flightnetwork the most. Flightnetwork 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 April 11, 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 81 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 April 15, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 42% on flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport by exploring options for tickets in the afternoon.

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 April 15, 2025.

The most flights from LHR to KEF are scheduled on a Monday (13 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

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 April 15, 2025.
See what other customers who have flown with Austrian Airlines, SWISS and Scandinavian Airlines 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.
Austrian Airlines
7.6
Good
775 reviews

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.6
Good
775 reviews
Austrian Airlines
7.6
Good
775 reviews

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
SWISS
7.5
Good
1,578 reviews
Austrian Airlines
7.6
Good
775 reviews

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Scandinavian Airlines
7.3
Good
1,335 reviews
Austrian Airlines
7.6
Good
775 reviews

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
TAP AIR PORTUGAL
7.1
Good
1,837 reviews
Austrian Airlines
7.6
Good
775 reviews

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Icelandair
7.0
Good
481 reviews
Austrian Airlines
7.6
Good
775 reviews

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

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 $192. Other airlines that can offer you cheap pricing are Icelandair, from $199, and Scandinavian Airlines, from $207. British Airways is 30% 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?

    $99 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Icelandair and Scandinavian Airlines, with prices starting from $108 and $110, 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 Emirates (100%), Qatar Airways (97%) and Qantas Airways (90%).

  • 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 $131. While the most popular route (London Heathrow - Reykjavik Keflavik Intl) can be booked for $180 on average our data indicates $1,029 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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$153Average$238FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$156Average$290FlexibilityNo cancel feeOn-time76%

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