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Cheap flights from London Heathrow Airport to Reykjavik from $164

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Reykjavik departing on 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Reykjavik

Cheap return flights

British Airways Logo
07:35 - 10:55LHR-KEF
3h 20mdirect
British Airways Logo
18:10 - 21:10KEF-LHR
3h 00mdirect
$296British Airways
Find Deal
Mon, 12 Jan - Fri, 16 Jan
British Airways Logo
07:35 - 10:55LHR-KEF
3h 20mdirect
British Airways Logo
18:10 - 21:10KEF-LHR
3h 00mdirect
$298British Airways
Find Deal
Tue, 20 Jan - Fri, 23 Jan
Icelandair Logo
20:35 - 23:55LHR-KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50KEF-LHR
3h 15mdirect
$309Icelandair
Find Deal
Thu, 13 Nov - Tue, 18 Nov
Icelandair Logo
20:35 - 23:55LHR-KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50KEF-LHR
3h 15mdirect
$315Icelandair
Find Deal
Sat, 15 Nov - Wed, 19 Nov
Scandinavian Airlines Logo
17:30 - 10:45LHR-KEF
17h 15m1 stop
Scandinavian Airlines Logo
13:00 - 21:35KEF-LHR
8h 35m1 stop
$332Scandinavian Airlines
Find Deal
Wed, 5 Nov - Mon, 10 Nov
Scandinavian Airlines Logo
19:50 - 10:45LHR-KEF
14h 55m1 stop
Scandinavian Airlines Logo
13:00 - 21:35KEF-LHR
8h 35m1 stop
$333Scandinavian Airlines
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Wed, 5 Nov - Mon, 10 Nov
SWISS Logo
20:05 - 08:20LHR-KEF
13h 15m1 stop
SWISS Logo
16:10 - 21:45KEF-LHR
28h 35m1 stop
$407SWISS
Find Deal
Wed, 10 Sep - Tue, 23 Sep
SWISS Logo
20:05 - 08:35LHR-KEF
13h 30m1 stop
SWISS Logo
16:10 - 21:45KEF-LHR
28h 35m1 stop
$410SWISS
Find Deal
Mon, 8 Sep - Tue, 23 Sep
Lufthansa Logo
07:30 - 13:05LHR-KEF
6h 35m1 stop
Lufthansa Logo
16:45 - 08:45KEF-LHR
16h 00m1 stop
$415Lufthansa
Find Deal
Tue, 21 Oct - Sun, 26 Oct
Lufthansa Logo
07:25 - 00:10LHR-KEF
17h 45m1 stop
Lufthansa Logo
14:20 - 22:10KEF-LHR
6h 50m1 stop
$418Lufthansa
Find Deal
Sat, 6 Sep - Tue, 16 Sep

Scandinavian Airlines flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Our best Scandinavian Airlines deals on London Heathrow Airport to Reykjavik Keflavik Intl Airport flight tickets
Scandinavian Airlines
5 Nov
LHR17:30London Heathrow
17h 15m
1 stop
KEF10:45Reykjavik Keflavik Intl
10 Nov
KEF13:00Reykjavik Keflavik Intl
8h 35m
1 stop
LHR21:35London Heathrow
$332
Find similar
Scandinavian Airlines
5 Nov
LHR19:50London Heathrow
14h 55m
1 stop
KEF10:45Reykjavik Keflavik Intl
10 Nov
KEF13:00Reykjavik Keflavik Intl
8h 35m
1 stop
LHR21:35London Heathrow
$333
Find similar
Scandinavian Airlines
10 Nov
LHR19:30London Heathrow
15h 15m
1 stop
KEF10:45Reykjavik Keflavik Intl
17 Nov
KEF13:00Reykjavik Keflavik Intl
5h 50m
1 stop
LHR18:50London Heathrow
$356
Find similar

Icelandair flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Our best Icelandair deals on London Heathrow Airport to Reykjavik Keflavik Intl Airport flight tickets
Icelandair
13 Nov
LHR20:35London Heathrow
3h 20m
KEF23:55Reykjavik Keflavik Intl
18 Nov
KEF07:35Reykjavik Keflavik Intl
3h 15m
LHR10:50London Heathrow
$309
Find similar
Icelandair
15 Nov
LHR20:35London Heathrow
3h 20m
KEF23:55Reykjavik Keflavik Intl
19 Nov
KEF07:35Reykjavik Keflavik Intl
3h 15m
LHR10:50London Heathrow
$315
Find similar
Icelandair
21 Jan
LHR20:35London Heathrow
3h 20m
KEF23:55Reykjavik Keflavik Intl
28 Jan
KEF07:35Reykjavik Keflavik Intl
3h 15m
LHR10:50London Heathrow
$316
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport 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, momondo users made 78,305 searches. Data last updated 31 July 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

Fly to

Route

Depart

Return

Price

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Mon 12/1

07:35-10:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Fri 16/1

18:10-21:10

Nonstop3h 00m

$296

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Tue 20/1

07:35-10:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Fri 23/1

18:10-21:10

Nonstop3h 00m

$298

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 13/11

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Tue 18/11

07:35-10:50

Nonstop3h 15m

$309

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 15/11

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Wed 19/11

07:35-10:50

Nonstop3h 15m

$315

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 5/11

17:30-10:45

1 stop17h 15m

Reykjavik Keflavik Intl

Mon 10/11

13:00-21:35

1 stop8h 35m

$332

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 5/11

19:50-10:45

1 stop14h 55m

Reykjavik Keflavik Intl

Mon 10/11

13:00-21:35

1 stop8h 35m

$333

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 10/9

20:05-08:20

1 stop13h 15m

Reykjavik Keflavik Intl

Tue 23/9

16:10-21:45

1 stop28h 35m

$407

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Mon 8/9

20:05-08:35

1 stop13h 30m

Reykjavik Keflavik Intl

Tue 23/9

16:10-21:45

1 stop28h 35m

$410

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Tue 21/10

07:30-13:05

1 stop6h 35m

Reykjavik Keflavik Intl

Sun 26/10

16:45-08:45

1 stop16h 00m

$415

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 6/9

07:25-00:10

1 stop17h 45m

Reykjavik Keflavik Intl

Tue 16/9

14:20-22:10

1 stop6h 50m

$418

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Reykjavik from

How to get the cheapest flight ticket from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Reykjavik Keflavik Intl Airport?

If you don’t want to visit Reykjavik Keflavik Intl Airport in January, then you should wait until February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $360.

What is the cheapest day to depart on your flight to Reykjavik Keflavik Intl Airport?

Our data shows that Sunday is the least expensive day to fly to Reykjavik Keflavik Intl Airport. Tickets to fly out on this day can be as low as $270. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $426. These prices are subject to change though, so be sure to set up a Price Alert for flights to Reykjavik Keflavik Intl Airport.

What is the cheapest time of day to depart on your flight to Reykjavik Keflavik Intl Airport?

According to our data, the cheapest time of day to fly to Reykjavik Keflavik Intl Airport is in the morning. momondo users have found flights departing from London Heathrow Airport to Reykjavik Keflavik Intl Airport in the morning for as low as $297. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Reykjavik Keflavik Intl Airport is at midday when prices are around $442.

What is the cheapest London Heathrow to Reykjavik Keflavik Intl flight route?

Fly from London Heathrow to Reykjavik Keflavik Intl for the best London Heathrow - Reykjavik Keflavik Intl flight prices

How far in advance should I book a flight to Reykjavik Keflavik Intl Airport?

You are more likely to see cheaper flights to Reykjavik Keflavik Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Reykjavik Keflavik Intl Airport for around $436 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Reykjavik Keflavik Intl Airport from London Heathrow Airport for as low as $366 on momondo.

What cabin class options are available on London Heathrow to Reykjavik Keflavik Intl flights?

There are 3 cabin classes available to choose from on London Heathrow to Reykjavik Keflavik Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to Reykjavik Keflavik Intl Airport flight prices changed over time?

As of July 2025, prices for London Heathrow Airport to Reykjavik Keflavik Intl Airport flights are approximately 6% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Reykjavik Keflavik Intl Airport (LHR to KEF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Best price found

$164

Fastest flight time

3h 05m

Direct flights

Every day
The best one-way flight to Reykjavik Keflavik Intl Airport from London Heathrow Airport in the past 72 hours is $164. The best return flight deal from London Heathrow Airport to Reykjavik Keflavik Intl Airport found on momondo in the last 72 hours is $296.
The fastest flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport takes 3h 05m
Direct flights go from London Heathrow Airport to Reykjavik Keflavik Intl Airport every day.
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  • How far is London Heathrow to Reykjavik Keflavik Intl by plane?

    London Heathrow and Reykjavik Keflavik Intl are 1893.8 km apart from one another. By plane, this route typically takes 3h 10m.

  • When did momondo last update prices for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

    Prices for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

  • How old do you have to be to fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Reykjavik Keflavik Intl Airport.

  • What documentation or ID do you need to fly to Reykjavik Keflavik Intl Airport?

    The necessary travel and health documents for your Reykjavik Keflavik Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

  • What is the most popular airline from London Heathrow Airport to Reykjavik Keflavik Intl Airport?

Best airlines flying from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Compare and see reviews for airlines that fly from London Heathrow Airport to Reykjavik Keflavik Intl Airport with momondo
Airline
Rating
Free cancellation
Price
IcelandairPriceFrom $278Free cancellationRating
7.0
519 reviews
Search Icelandair flights

  • Icelandair Flights From London Heathrow Airport to Reykjavik Keflavik Intl Airport

    Icelandair flight deals from London Heathrow Airport to Reykjavik Keflavik Intl Airport start from $180 round-trip. Over the 12 Icelandair flights for this route in a normal week, average airfare is usually $251 round-trip - but some users have found much cheaper deals with momondo.

Travelling to a place near Reykjavik?

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

Why use momondo?

Why should I use momondo to find a flight deal from London to Reykjavik?

Finding the right flight to Reykjavik from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Reykjavik quick and easy, saving you time and money.

Can I find flights from London to Reykjavik with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Reykjavik from London with this policy.

How can momondo help me find flights from London to Reykjavik?

Once all potential London to Reykjavik flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Reykjavik right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Reykjavik now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Reykjavik and let you know when they change.

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