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Cheap flights from London Heathrow Airport to Reykjavik from £58

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 31/1. 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

Enter your travel dates to find the best prices.
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50
KEF
-
LHR
3h 15mdirect
£104Icelandair
Wed, 14 Jan - Wed, 21 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50
KEF
-
LHR
3h 15mdirect
£108Icelandair
Sun, 25 Jan - Thu, 29 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
16:20 - 19:30
KEF
-
LHR
3h 10mdirect
£108Icelandair
Wed, 14 Jan - Thu, 22 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50
KEF
-
LHR
3h 15mdirect
£109Icelandair
Sun, 25 Jan - Fri, 30 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
16:20 - 19:30
KEF
-
LHR
3h 10mdirect
£110Icelandair
Sat, 24 Jan - Sat, 31 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
16:20 - 19:30
KEF
-
LHR
3h 10mdirect
£111Icelandair
Mon, 19 Jan - Thu, 22 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50
KEF
-
LHR
3h 15mdirect
£111Icelandair
Sun, 25 Jan - Fri, 30 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50
KEF
-
LHR
3h 15mdirect
£112Icelandair
Thu, 22 Jan - Wed, 28 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
07:35 - 10:50
KEF
-
LHR
3h 15mdirect
£113Icelandair
Sun, 11 Jan - Sat, 17 Jan
Icelandair Logo
20:35 - 23:55
LHR
-
KEF
3h 20mdirect
Icelandair Logo
16:20 - 19:30
KEF
-
LHR
3h 10mdirect
£114Icelandair
Sun, 11 Jan - Thu, 15 Jan

British Airways flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport

Our best British Airways deals on London Heathrow Airport to Reykjavik Keflavik Intl Airport flight tickets
British Airways
7 Jan
LHR07:30London Heathrow
3h 20m
KEF10:50Reykjavik Keflavik Intl
13 Jan
KEF11:50Reykjavik Keflavik Intl
3h 10m
LHR15:00London Heathrow
£124
Find similar
British Airways
7 Jan
LHR07:30London Heathrow
3h 20m
KEF10:50Reykjavik Keflavik Intl
14 Jan
KEF11:50Reykjavik Keflavik Intl
3h 10m
LHR15:00London Heathrow
£125
Find similar
British Airways
17 Jan
LHR07:35London Heathrow
3h 20m
KEF10:55Reykjavik Keflavik Intl
23 Jan
KEF18:10Reykjavik Keflavik Intl
3h 00m
LHR21:10London Heathrow
£130
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
14 Jan
LHR20:35London Heathrow
3h 20m
KEF23:55Reykjavik Keflavik Intl
21 Jan
KEF07:35Reykjavik Keflavik Intl
3h 15m
LHR10:50London Heathrow
£104
Find similar
Icelandair
25 Jan
LHR20:35London Heathrow
3h 20m
KEF23:55Reykjavik Keflavik Intl
29 Jan
KEF07:35Reykjavik Keflavik Intl
3h 15m
LHR10:50London Heathrow
£108
Find similar
Icelandair
14 Jan
LHR20:35London Heathrow
3h 20m
KEF23:55Reykjavik Keflavik Intl
22 Jan
KEF16:20Reykjavik Keflavik Intl
3h 10m
LHR19:30London Heathrow
£108
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 279,928 searches. Data last updated 12 December 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

Wed 14/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Wed 21/1

07:35-10:50

Nonstop3h 15m

£104

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 25/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Thu 29/1

07:35-10:50

Nonstop3h 15m

£108

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 14/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Thu 22/1

16:20-19:30

Nonstop3h 10m

£108

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 25/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Fri 30/1

07:35-10:50

Nonstop3h 15m

£109

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 24/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Sat 31/1

16:20-19:30

Nonstop3h 10m

£110

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Mon 19/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Thu 22/1

16:20-19:30

Nonstop3h 10m

£111

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 25/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Fri 30/1

07:35-10:50

Nonstop3h 15m

£111

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 22/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Wed 28/1

07:35-10:50

Nonstop3h 15m

£112

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 11/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Sat 17/1

07:35-10:50

Nonstop3h 15m

£113

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 11/1

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Thu 15/1

16:20-19:30

Nonstop3h 10m

£114

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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?

The month of January is, on average, the cheapest month to fly to Reykjavik Keflavik Intl Airport from London Heathrow Airport, with most prices found around £152. If you don’t want to visit Reykjavik Keflavik Intl Airport in January, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £161.

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

On average, the least expensive day to fly to Reykjavik Keflavik Intl Airport from London Heathrow Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £335. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport on a Saturday will generally be more expensive and average around £398. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest London Heathrow Airport to Reykjavik Keflavik Intl Airport flights are usually those with departure times in the morning. Our users have found flights to Reykjavik Keflavik Intl Airport in the morning for as low as £318. Try not to purchase tickets at midday because they tend to be around £494. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £213 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 £184 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 December 2025, prices for London Heathrow Airport to Reykjavik Keflavik Intl Airport flights are approximately 17% 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

£423

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 £423. The best return flight deal from London Heathrow Airport to Reykjavik Keflavik Intl Airport found on momondo in the last 72 hours is £289.
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.
Search flight deals

  • How far is London Heathrow to Reykjavik Keflavik Intl by plane?

    Reykjavik Keflavik Intl is 1176.8 mi away from London Heathrow. 3h 05m is a normal flight duration for this route.

  • 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 refresh 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. 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 required travel and health documents for your Reykjavik Keflavik Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Reykjavik Keflavik Intl Airport. We recommend that you seek guidance from your airline or a reliable 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
British AirwaysPriceFrom £117Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
IcelandairPriceFrom £123Free CancellationRating
7.0
589 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom £135Free CancellationRating
7.4
1,605 reviews
Search Scandinavian Airlines flights

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

    The lowest priced Icelandair flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport from the last 72 hours was £123. Generally, Icelandair has 12 flights on this route every week with an average price of £235. Icelandair is rated 7.0/10 by our users.

  • British Airways Flights From London Heathrow Airport to Reykjavik Keflavik Intl Airport

    British Airways (6.7/10 from 7,571 reviews) operates around 4 flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport in any given week. The average British Airways airfare for this route is around £230, with deals from around £117 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Reykjavik Keflavik Intl Airport flight searches in the last 72 hours.

Travelling to a place near Reykjavik?

Book flights to Reykjavik if you plan to visit one of these locations
Keflavik
Selfoss
Grindavik
Hveragerdi
Kopavogur
Borgarnes
Hella

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Reykjavik for you.

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

All flight searches from London to Reykjavik on momondo can be filtered to show those which offer flexible booking policies.

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 simply researching potential flights to Reykjavik, momondo offers a useful price alert feature which will track prices for flights to Reykjavik from London and alert you when they change.

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