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Keflavik Intl

$92+ 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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 19 days in advance, depart on a Friday or Sunday and return on a Tuesday

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 September 11, 2025.

Round-trip from

$155
(Mytrip)

One-way from

$92
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$260

Good round-trip deal

$544 or less

Good one-way deal

$268 or less
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. 23% potential increase in price ($83 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 September 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/10. 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.
Tue 11/48:35 pmLHR - KEF
Nonstop3h 20mIcelandair
Mon 11/107:35 amKEF - LHR
Nonstop3h 15mIcelandair
Deal found 9/10$155
This FlightHub deal was found by Cheapflights users on 9/10. 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.
Wed 11/58:35 pmLHR - KEF
Nonstop3h 20mIcelandair
Sun 11/97:35 amKEF - LHR
Nonstop3h 15mIcelandair
Deal found 9/10$161
This Booking.com deal was found by Cheapflights users on 9/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:35 pmLHR - KEF
Nonstop3h 20mIcelandair
Mon 11/247:35 amKEF - LHR
Nonstop3h 15mIcelandair
Deal found 9/11$163
This FlightHub deal was found by Cheapflights users on 9/9. 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.
Sun 11/912:15 pmLHR - KEF
Nonstop3h 15mIcelandair
Sat 11/157:35 amKEF - LHR
Nonstop3h 15mIcelandair
Deal found 9/9$168
This Icelandair deal was found by Cheapflights users on 9/11. 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.
Sat 11/18:35 pmLHR - KEF
Nonstop3h 20mIcelandair
Wed 11/57:35 amKEF - LHR
Nonstop3h 15mIcelandair
Deal found 9/11$172
This Icelandair deal was found by Cheapflights users on 9/11. 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.
Sat 11/228:35 pmLHR - KEF
Nonstop3h 20mIcelandair
Thu 11/274:20 pmKEF - LHR
Nonstop3h 10mIcelandair
Deal found 9/11$173
This British Airways deal was found by Cheapflights users on 9/9. 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 11/37:35 amLHR - KEF
Nonstop3h 20mBritish Airways
Wed 11/1211:50 amKEF - LHR
Nonstop3h 10mBritish Airways
Deal found 9/9$177
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Thu 11/68:35 pmLHR - KEF
Nonstop3h 20mMultiple Airlines
Mon 11/101:00 pmKEF - LHR
1 stop20h 35mMultiple Airlines
Deal found 9/11$178
This Icelandair deal was found by Cheapflights users on 9/8. 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.
Tue 11/118:35 pmLHR - KEF
Nonstop3h 20mIcelandair
Fri 11/147:35 amKEF - LHR
Nonstop3h 15mIcelandair
Deal found 9/8$179
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Tue 11/48:35 pmLHR - KEF
Nonstop3h 20mMultiple Airlines
Mon 11/101:00 pmKEF - LHR
1 stop5h 50mMultiple Airlines
Deal found 9/10$189
This Booking.com deal was found by Cheapflights users on 9/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:30 pmLHR - KEF
1 stop17h 15mScandinavian Airlines
Mon 11/241:00 pmKEF - LHR
1 stop8h 35mScandinavian Airlines
Deal found 9/11$194
This British Airways deal was found by Cheapflights users on 9/9. 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.
Thu 10/307:25 amLHR - KEF
Nonstop3h 20mBritish Airways
Tue 11/411:50 amKEF - LHR
Nonstop3h 10mBritish Airways
Deal found 9/9$197

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 September 11, 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

Thu 11/6

7:25 am-10:45 am

Nonstop3h 20m

Reykjavik Keflavik Intl

Mon 11/10

11:50 am-3:00 pm

Nonstop3h 10m

$204

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 11/19

5:30 pm-10:45 am

1 stop17h 15m

Reykjavik Keflavik Intl

Mon 11/24

1:00 pm-9:20 pm

2 stops8h 20m

$220

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 10/9

7:35 am-9:40 am

Nonstop3h 05m

Reykjavik Keflavik Intl

Fri 10/17

10:30 am-2:40 pm

Nonstop3h 10m

$229

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 10/16

7:35 am-9:40 am

Nonstop3h 05m

Reykjavik Keflavik Intl

Sun 10/19

10:20 am-2:30 pm

Nonstop3h 10m

$230

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 10/16

7:35 am-9:40 am

Nonstop3h 05m

Reykjavik Keflavik Intl

Thu 10/23

10:30 am-2:40 pm

Nonstop3h 10m

$230

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 11/6

5:30 pm-10:45 am

2 stops17h 15m

Reykjavik Keflavik Intl

Mon 11/10

1:00 pm-9:35 pm

1 stop8h 35m

$231

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 11/20

7:25 am-10:45 am

Nonstop3h 20m

Reykjavik Keflavik Intl

Sun 11/23

5:55 pm-8:55 pm

Nonstop3h 00m

$231

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 12/11

7:50 pm-10:45 am

2 stops14h 55m

Reykjavik Keflavik Intl

Sun 12/14

11:15 am-6:50 pm

1 stop7h 35m

$232

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 11/20

5:30 pm-10:45 am

2 stops17h 15m

Reykjavik Keflavik Intl

Sun 11/23

11:15 am-6:50 pm

1 stop7h 35m

$232

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Mon 2/23

7:50 pm-11:00 am

1 stop15h 10m

Reykjavik Keflavik Intl

Thu 2/26

11:30 am-5:40 pm

1 stop6h 10m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 22 results
1
2
3

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 August 29, 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 19 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 June is currently the most expensive (average of $655). 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 September 11, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 36% on flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport by exploring options for tickets in the afternoon.

How much does it cost to fly round-trip from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

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 September 11, 2025.
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
7.0
Good
546 reviews

Overall

7.0

Comfort

6.9

Entertainment

7.0

Food

6.2

Crew

8.0

Boarding

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
Icelandair
7.0
Good
546 reviews
Icelandair
7.0
Good
546 reviews

Overall

7.0

Comfort

6.9

Entertainment

7.0

Food

6.2

Crew

8.0

Boarding

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
British Airways
6.7
Okay
7,361 reviews
Icelandair
7.0
Good
546 reviews

Overall

7.0

Comfort

6.9

Entertainment

7.0

Food

6.2

Crew

8.0

Boarding

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

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 and Scandinavian Airlines can get you from London Heathrow Airport to Reykjavik Keflavik Intl Airport in just under 3h 20m. Your travel time can differ by up to 13h 55m. The distance between London Heathrow Airport and Reykjavik Keflavik Intl Airport is about 1177 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $153. Another airline that can offer you cheap pricing is Icelandair. British Airways is 45% 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 American Airlines (87%), Qatar Airways (87%) and Japan Airlines (87%).

  • 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 $123. While the most popular route (London Heathrow - Reykjavik Keflavik Intl) can be booked for $229 on average, our data indicates $1,371 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 June is currently the most expensive (average of $655). 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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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$153Average$225FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$156Average$302FlexibilityNo cancel feeOn-time76%

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