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Cheap flights from Reykjavik Keflavik Intl Airport to London from £69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Reykjavik Keflavik Intl Airport to London departing on 23/11. 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 Reykjavik Keflavik Intl Airport to London

Cheap return flights

British Airways Logo
18:10 - 21:10KEF-LHR
3h 00mdirect
British Airways Logo
07:35 - 10:55LHR-KEF
3h 20mdirect
£134British Airways
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Fri, 12 Dec - Tue, 16 Dec
British Airways Logo
18:10 - 21:10KEF-LHR
3h 00mdirect
British Airways Logo
13:40 - 17:05LHR-KEF
3h 25mdirect
£136British Airways
Find Deal
Fri, 23 Jan - Sun, 25 Jan
British Airways Logo
18:10 - 21:10KEF-LHR
3h 00mdirect
British Airways Logo
13:40 - 17:05LHR-KEF
3h 25mdirect
£137British Airways
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Fri, 21 Nov - Sun, 23 Nov
British Airways Logo
11:45 - 14:55KEF-LHR
3h 10mdirect
British Airways Logo
07:30 - 10:50LHR-KEF
3h 20mdirect
£137British Airways
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Thu, 5 Feb - Wed, 11 Feb
Logo
13:00 - 18:50KEF-LHR
5h 50m1 stop
Logo
20:35 - 23:55LHR-KEF
3h 20mdirect
£140
Find Deal
Mon, 27 Oct - Mon, 3 Nov
Logo
11:30 - 18:50KEF-LHR
7h 20m1 stop
Logo
20:35 - 23:55LHR-KEF
3h 20mdirect
£143
Find Deal
Thu, 6 Nov - Mon, 10 Nov
Scandinavian Airlines Logo
11:30 - 17:40KEF-LHR
6h 10m1 stop
Scandinavian Airlines Logo
17:00 - 10:45LHR-KEF
17h 45m1 stop
£159Scandinavian Airlines
Find Deal
Thu, 6 Nov - Mon, 10 Nov
Scandinavian Airlines Logo
11:30 - 17:40KEF-LHR
6h 10m1 stop
Scandinavian Airlines Logo
19:30 - 10:45LHR-KEF
15h 15m1 stop
£166Scandinavian Airlines
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Thu, 6 Nov - Mon, 10 Nov
KLM Logo
11:25 - 17:00KEF-LHR
5h 35m1 stop
KLM Logo
08:40 - 19:05LHR-KEF
10h 25m1 stop
£177KLM
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Fri, 23 Jan - Sun, 25 Jan
KLM Logo
20:05 - 09:00KEF-LHR
12h 55m1 stop
KLM Logo
08:40 - 19:05LHR-KEF
10h 25m1 stop
£178KLM
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Wed, 12 Nov - Thu, 20 Nov

KLM flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport

Our best KLM deals on Reykjavik Keflavik Intl Airport to London Heathrow Airport flight tickets
KLM
23 Jan
KEF11:25Reykjavik Keflavik Intl
5h 35m
1 stop
LHR17:00London Heathrow
25 Jan
LHR08:40London Heathrow
10h 25m
1 stop
KEF19:05Reykjavik Keflavik Intl
£177
Find similar
KLM
12 Nov
KEF20:05Reykjavik Keflavik Intl
12h 55m
1 stop
LHR09:00London Heathrow
20 Nov
LHR08:40London Heathrow
10h 25m
1 stop
KEF19:05Reykjavik Keflavik Intl
£178
Find similar
KLM
21 Nov
KEF11:25Reykjavik Keflavik Intl
7h 50m
1 stop
LHR19:15London Heathrow
23 Nov
LHR08:40London Heathrow
10h 25m
1 stop
KEF19:05Reykjavik Keflavik Intl
£179
Find similar

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

Our best British Airways deals on Reykjavik Keflavik Intl Airport to London Heathrow Airport flight tickets
British Airways
12 Dec
KEF18:10Reykjavik Keflavik Intl
3h 00m
LHR21:10London Heathrow
16 Dec
LHR07:35London Heathrow
3h 20m
KEF10:55Reykjavik Keflavik Intl
£134
Find similar
British Airways
23 Jan
KEF18:10Reykjavik Keflavik Intl
3h 00m
LHR21:10London Heathrow
25 Jan
LHR13:40London Heathrow
3h 25m
KEF17:05Reykjavik Keflavik Intl
£136
Find similar
British Airways
21 Nov
KEF18:10Reykjavik Keflavik Intl
3h 00m
LHR21:10London Heathrow
23 Nov
LHR13:40London Heathrow
3h 25m
KEF17:05Reykjavik Keflavik Intl
£137
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Reykjavik Keflavik Intl Airport to London Heathrow 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 September 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 12/12

18:10-21:10

Nonstop3h 00m

London Heathrow

Tue 16/12

07:35-10:55

Nonstop3h 20m

£134

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 23/1

18:10-21:10

Nonstop3h 00m

London Heathrow

Sun 25/1

13:40-17:05

Nonstop3h 25m

£136

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 21/11

18:10-21:10

Nonstop3h 00m

London Heathrow

Sun 23/11

13:40-17:05

Nonstop3h 25m

£137

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 5/2

11:45-14:55

Nonstop3h 10m

London Heathrow

Wed 11/2

07:30-10:50

Nonstop3h 20m

£137

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Mon 27/10

13:00-18:50

1 stop5h 50m

London Heathrow

Mon 3/11

20:35-23:55

Nonstop3h 20m

£140

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 6/11

11:30-18:50

1 stop7h 20m

London Heathrow

Mon 10/11

20:35-23:55

Nonstop3h 20m

£143

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 6/11

11:30-17:40

1 stop6h 10m

London Heathrow

Mon 10/11

17:00-10:45

1 stop17h 45m

£159

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 6/11

11:30-17:40

1 stop6h 10m

London Heathrow

Mon 10/11

19:30-10:45

1 stop15h 15m

£166

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 23/1

11:25-17:00

1 stop5h 35m

London Heathrow

Sun 25/1

08:40-19:05

1 stop10h 25m

£177

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Wed 12/11

20:05-09:00

1 stop12h 55m

London Heathrow

Thu 20/11

08:40-19:05

1 stop10h 25m

£178

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 London from

How to get the cheapest flight ticket from Reykjavik Keflavik Intl Airport to London Heathrow 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 typical price of a round-trip flight between Reykjavik Keflavik Intl Airport and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, March is the cheapest month to fly from Reykjavik Keflavik Intl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £165. The month of December is another great option to travel to London Heathrow Airport, with average flight prices from Reykjavik Keflavik Intl Airport averaging around £197.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Reykjavik Keflavik Intl Airport is on a Friday. momondo users have found tickets for Friday departures for as low as £177. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £306.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Reykjavik Keflavik Intl Airport to London Heathrow Airport in the afternoon for as low as £152. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £269 on average. Flights to London Heathrow Airport from Reykjavik Keflavik Intl Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

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

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

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

Can stopping save me money on Reykjavik Keflavik Intl Airport to London Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Reykjavik Keflavik Intl Airport to London Heathrow Airport.

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

As of September 2025, prices for Reykjavik Keflavik Intl Airport to London Heathrow Airport flights are approximately 4% more expensive when compared to flights at the same time last year.

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

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

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

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

Best price found

£226

Fastest flight time

3h 00m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Reykjavik Keflavik Intl Airport in the past 72 hours is £226. The best return flight deal from Reykjavik Keflavik Intl Airport to London Heathrow Airport found on momondo in the last 72 hours is £183.
The fastest flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport takes 3h 00m
Direct flights go from Reykjavik Keflavik Intl Airport to London Heathrow Airport every day.
Search flight deals

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

    London Heathrow is 1176.8 mi away from Reykjavik Keflavik Intl. In terms of flight time, this usually takes a little over 3h 00m.

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

    Prices for flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Reykjavik Keflavik Intl Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow 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 London Heathrow 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 Reykjavik Keflavik Intl Airport to London Heathrow Airport?

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Reykjavik to London. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to London from Reykjavik which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Reykjavik to London.

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

Price alerts on flights to London from Reykjavik are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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