How often are flights from Reykjavik to London delayed?

About 9% of weekly flights between Reykjavik and London have experienced delays in the past year, with the average delay time being 122 minutes.

What is the most punctual flight time for Reykjavik to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Reykjavik to London flights?

Over the past year, Icelandair have had the lowest number of delays on this route, with just 7% of flights being delayed.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most reliable airlines from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Reykjavik Keflavik Intl Airport to London Heathrow Airport on time: Qatar Airways (85%), TAP AIR PORTUGAL (85%), Icelandair (83%).

Can I find deals for flights from Keflavik Intl to Heathrow that include hotel bookings?

Yes. In addition to deals on Keflavik Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Keflavik Intl to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Keflavik Intl to Heathrow.

Can I find deals for business class flights from Keflavik Intl to Heathrow?

Yes. Cheapflights offers flight deals from Keflavik Intl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£132+ Cheap Flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport

Cheap flight deals from Keflavik Intl to Heathrow

Enter your travel dates to find the best prices.

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Cheapest flights from Keflavik Intl to Heathrow
Explore the most affordable flight options available from Keflavik Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Sat 28/1117:05 -

1 stop16h 30m

Sat 5/1220:35 -

Nonstop3h 15m

Deal found 17/8£161

Tue 10/1111:55 -

1 stop6h 55m

Sun 15/1120:35 -

Nonstop3h 15m

Deal found 20/8£166

Mon 16/1118:05 -

1 stop21h 55m

Sun 22/1120:35 -

Nonstop3h 15m

Deal found 18/8£166

Sat 12/1217:05 -

1 stop16h 30m

Tue 15/1220:35 -

Nonstop3h 15m

Deal found 18/8£169

Sat 28/1117:05 -

1 stop23h 20m

Sat 5/1210:35 -

1 stop25h 05m

Deal found 17/8£175

Fri 20/1118:05 -

1 stop15h 15m

Sun 22/1120:35 -

Nonstop3h 15m

Deal found 18/8£176

Tue 6/1018:55 -

1 stop13h 40m

Wed 7/1019:50 -

1 stop13h 00m

Deal found 19/8£179

Tue 24/1118:05 -

1 stop21h 55m

Sat 28/1120:35 -

Nonstop3h 15m

Deal found 16/8£180

Thu 5/1112:05 -

1 stop26h 20m

Sun 8/1115:15 -

1 stop26h 00m

Deal found 16/8£184

Fri 20/1118:10 -

Nonstop3h 00m

Sun 22/1107:30 -

Nonstop3h 15m

Deal found 16/8£186

Find flight deals from Keflavik Intl to Heathrow

Round-trip from	£161
One-way from	£132
Popular in	July
Cheapest in	March
Average price	£323
Good one-way deal	£192 or less

Icelandair
28/11-5/12
1 total stop
19h 45m total
Reykjavik to London

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5/11
2 total stops
7h 45m total
Reykjavik to London

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (£61 potential increase over avg. return price).

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Cheapest flight prices on average. 6% potential price decrease (£13 potential savings vs. average return price).

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Average for round-trip flights in August 2026

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Price to beat on a one-way flight from Reykjavik Keflavik Intl to London Heathrow.

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport that are best for you.

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ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Wed 11/11

11:35-17:40

1 stop6h 05m

London Heathrow

Tue 17/11

19:50-10:45

1 stop14h 55m

£188

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sat 7/11

16:05-19:05

Nonstop3h 00m

London Heathrow

Sat 21/11

07:35-10:50

Nonstop3h 15m

£200

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Wed 11/11

11:45-14:55

Nonstop3h 10m

London Heathrow

Tue 17/11

07:35-10:50

Nonstop3h 15m

£211

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sun 8/11

17:50-20:50

Nonstop3h 00m

London Heathrow

Mon 23/11

07:35-10:50

Nonstop3h 15m

£233

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Tue 3/11

18:05-09:20

1 stop15h 15m

London Heathrow

Sun 8/11

06:40-17:20

1 stop10h 40m

£262

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Mon 9/11

18:05-16:00

1 stop21h 55m

London Heathrow

Wed 18/11

10:20-17:20

1 stop7h 00m

£280

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Fri 13/11

14:45-07:40

1 stop16h 55m

London Heathrow

Fri 20/11

17:50-13:45

1 stop19h 55m

£309

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Thu 8/10

16:10-20:20

Nonstop3h 10m

London Heathrow

Mon 12/10

21:25-23:35

Nonstop3h 10m

£312

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Thu 8/10

10:40-14:50

Nonstop3h 10m

London Heathrow

Sun 11/10

07:25-09:30

Nonstop3h 05m

£320

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sat 10/10

16:10-20:20

Nonstop3h 10m

London Heathrow

Mon 12/10

15:00-00:10

1 stop10h 10m

£331

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 20 resultsSorted by cheapest first

Best time to book a flight from Keflavik Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Keflavik Intl with our price prediction graph.

KEF-LHR

Estimated return 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 Reykjavik Keflavik Intl Airport to London Heathrow Airport

Prices

Delays

What is the cheapest time of day to fly from KEF to LHR?

When flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

Airfare is below average for this route at the moment.

Reykjavik Keflavik Intl Airport to London Heathrow Airport flights typically cost between £331 and £380 in November.
The cheapest return price found within the last 5 days was £161 on Multiple Airlines (28 Nov–5 Dec).

Related info for your journey

How long is the flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?
A quick flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport can take about 3h. Scandinavian Airlines provides one of the quickest options available for as low as £200. The distance from Reykjavik Keflavik Intl Airport to London Heathrow Airport is about 1177 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most reliable airlines from Reykjavik Keflavik Intl Airport to London Heathrow Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Reykjavik Keflavik Intl Airport to London Heathrow Airport on time: Qatar Airways (85%), TAP AIR PORTUGAL (85%), Icelandair (83%).
What are the cheapest flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport?
Looking at all options, your cheapest flight can be booked for £123. While the most popular route (Reykjavik Keflavik Intl - London Heathrow) can be booked for £161 on average, our data indicates £267 when flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport.
Can I find deals for flights from Keflavik Intl to Heathrow that include hotel bookings?
Yes. In addition to deals on Keflavik Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Keflavik Intl to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Keflavik Intl to Heathrow.
Can I find deals for business class flights from Keflavik Intl to Heathrow?
Yes. Cheapflights offers flight deals from Keflavik Intl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheapflights makes it easy to find Keflavik Intl to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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Millions of users choose and trust Cheapflights to book the best flight deals from Keflavik Intl to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Keflavik Intl to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Keflavik Intl to Heathrow flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Keflavik Intl to Heathrow become cheaper?

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Cheap flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport from £132

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Keflavik Intl to Heathrow

Cheapest flights from Keflavik Intl to HeathrowExplore the most affordable flight options available from Keflavik Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Explore the most affordable flight options available from Keflavik Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Best flights from Keflavik Intl to HeathrowDiscover carefully curated flight deals from Keflavik Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2026.

Discover carefully curated flight deals from Keflavik Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2026.

Direct flights from Keflavik Intl to HeathrowExplore direct flight options from Keflavik Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 August 2026.

Explore direct flight options from Keflavik Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 August 2026.

Last-minute flights from Keflavik Intl to HeathrowDiscover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated 20 August 2026 and is based on user searches.

Discover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated 20 August 2026 and is based on user searches.

One-way flights from Keflavik Intl to HeathrowSearch for one-way flight options from Keflavik Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

Search for one-way flight options from Keflavik Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

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Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport that are best for you.

Best time to book a flight from Keflavik Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Keflavik Intl with our price prediction graph.

Cheapflights Insights

What is the cheapest time of day to fly from KEF to LHR?

When flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

Airfare is below average for this route at the moment.

Reykjavik Keflavik Intl Airport to London Heathrow Airport flights typically cost between £331 and £380 in November.The cheapest return price found within the last 5 days was £161 on Multiple Airlines (28 Nov–5 Dec).

How often are flights from Reykjavik to London delayed?

About 9% of weekly flights between Reykjavik and London have experienced delays in the past year, with the average delay time being 122 minutes.

What is the most punctual flight time for Reykjavik to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Reykjavik to London flights?

Over the past year, Icelandair have had the lowest number of delays on this route, with just 7% of flights being delayed.

Related info for your journey

How long is the flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

What are the most reliable airlines from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

What are the cheapest flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

Can I find deals for flights from Keflavik Intl to Heathrow that include hotel bookings?

How can I find direct flights from Keflavik Intl to Heathrow?

Can I find deals for business class flights from Keflavik Intl to Heathrow?

Travelling to a place near London Heathrow Airport?

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Cheapest flights from Keflavik Intl to Heathrow
Explore the most affordable flight options available from Keflavik Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Best flights from Keflavik Intl to Heathrow
Discover carefully curated flight deals from Keflavik Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2026.

Direct flights from Keflavik Intl to Heathrow
Explore direct flight options from Keflavik Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 August 2026.

Last-minute flights from Keflavik Intl to Heathrow
Discover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated 20 August 2026 and is based on user searches.

One-way flights from Keflavik Intl to Heathrow
Search for one-way flight options from Keflavik Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

Reykjavik Keflavik Intl Airport to London Heathrow Airport flights typically cost between £331 and £380 in November.
The cheapest return price found within the last 5 days was £161 on Multiple Airlines (28 Nov–5 Dec).