How often are flights from Reykjavik to London delayed?

About 11% of weekly flights between Reykjavik and London have experienced delays in the past year, with the average delay time being 125 minutes.

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

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

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

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

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 11% 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: Japan Airlines (89%), Turkish Airlines (88%), Icelandair (87%).

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.

£62+ Flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport

Q: 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 £148 and £309 in January. The cheapest return flight price found within the last 3 days was £132 on British Airways (15 Jan-18 Jan).

Cheap flight deals from Keflavik Intl to Heathrow

Enter your travel dates to find the best prices.

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 22 December 2025.

Wed 24/1214:05KEF - LHR

1 stop7h 35mMultiple Airlines

Wed 31/1219:15LHR - KEF

1 stop19h 00mMultiple Airlines

Deal found 20/12£267

Wed 24/1214:05KEF - LHR

2 stops27h 00mLufthansa

Wed 31/1219:15LHR - KEF

1 stop19h 00mLufthansa

Deal found 20/12£270

Thu 25/1215:10KEF - LHR

1 stop7h 45mLufthansa

Wed 31/1219:15LHR - KEF

1 stop19h 00mLufthansa

Deal found 21/12£277

Mon 29/1207:35KEF - LHR

Nonstop3h 15mMultiple Airlines

Mon 5/119:50LHR - KEF

1 stop14h 10mMultiple Airlines

Deal found 20/12£306

Sat 27/1211:55KEF - LHR

Nonstop3h 10mBritish Airways

Tue 30/1207:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 21/12£326

Mon 29/1207:35KEF - LHR

Nonstop3h 15mIcelandair

Mon 5/112:15LHR - KEF

Nonstop3h 15mIcelandair

Deal found 20/12£342

Sat 27/1214:20KEF - LHR

1 stop7h 20mMultiple Airlines

Tue 30/1209:30LHR - KEF

2 stops52h 45mMultiple Airlines

Deal found 21/12£346

Tue 30/1211:50KEF - LHR

Nonstop3h 10mBritish Airways

Sun 4/107:20LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 20/12£395

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 22 December 2025.

Sat 17/111:55KEF - LHR

Nonstop3h 10mBritish Airways

Tue 20/107:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 20/12£144

Wed 8/411:15KEF - LHR

1 stop9h 20mScandinavian Airlines

Wed 22/418:40LHR - KEF

1 stop16h 00mScandinavian Airlines

Deal found 20/12£158

Tue 31/310:50KEF - LHR

Nonstop3h 10mBritish Airways

Tue 7/407:50LHR - KEF

Nonstop3h 05mBritish Airways

Deal found 21/12£159

Tue 31/311:05KEF - LHR

1 stop6h 45mScandinavian Airlines

Mon 6/410:35LHR - KEF

1 stop8h 00mScandinavian Airlines

Deal found 21/12£163

Tue 31/310:50KEF - LHR

Nonstop3h 10mBritish Airways

Wed 8/407:55LHR - KEF

Nonstop3h 05mBritish Airways

Deal found 21/12£159

Sat 2/517:10KEF - LHR

1 stop15h 10mScandinavian Airlines

Tue 5/519:50LHR - KEF

1 stop15h 35mScandinavian Airlines

Deal found 21/12£175

Sat 7/211:55KEF - LHR

Nonstop3h 10mBritish Airways

Sun 8/213:40LHR - KEF

Nonstop3h 25mBritish Airways

Deal found 22/12£165

Sun 29/310:40KEF - LHR

1 stop7h 10mScandinavian Airlines

Tue 7/410:20LHR - KEF

1 stop6h 55mScandinavian Airlines

Deal found 21/12£189

Fri 27/218:10KEF - LHR

Nonstop3h 00mBritish Airways

Mon 2/307:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 21/12£173

Sat 7/211:55KEF - LHR

Nonstop3h 10mBritish Airways

Mon 9/207:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 20/12£182

Tue 31/310:50KEF - LHR

Nonstop3h 10mBritish Airways

Sat 4/407:05LHR - KEF

Nonstop3h 05mBritish Airways

Deal found 21/12£189

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 22 December 2025.

Thu 15/111:45KEF - LHR

Nonstop3h 10mBritish Airways

Sun 18/107:20LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 22/12£132

Wed 21/111:50KEF - LHR

Nonstop3h 10mBritish Airways

Wed 28/107:30LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 21/12£138

Sat 17/111:55KEF - LHR

Nonstop3h 10mBritish Airways

Tue 20/107:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 20/12£144

Sun 15/317:55KEF - LHR

Nonstop3h 00mBritish Airways

Sun 22/307:20LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 22/12£147

Sat 2/510:00KEF - LHR

Nonstop3h 10mBritish Airways

Tue 5/507:50LHR - KEF

Nonstop3h 05mBritish Airways

Deal found 21/12£155

Tue 3/211:50KEF - LHR

Nonstop3h 10mBritish Airways

Tue 10/207:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 20/12£158

Tue 31/310:50KEF - LHR

Nonstop3h 10mBritish Airways

Wed 8/407:55LHR - KEF

Nonstop3h 05mBritish Airways

Deal found 21/12£159

Sat 7/211:55KEF - LHR

Nonstop3h 10mBritish Airways

Sun 8/213:40LHR - KEF

Nonstop3h 25mBritish Airways

Deal found 22/12£165

Sat 7/211:55KEF - LHR

Nonstop3h 10mBritish Airways

Mon 9/207:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 21/12£167

Fri 27/218:10KEF - LHR

Nonstop3h 00mBritish Airways

Mon 2/307:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 21/12£173

Last-minute flights from Keflavik Intl to Heathrow
Discover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated 22 December 2025 and is based on user searches.

Wed 24/1214:05KEF - LHR

1 stop7h 35mMultiple Airlines

Wed 31/1219:15LHR - KEF

1 stop19h 00mMultiple Airlines

Deal found 20/12£267

Thu 15/111:45KEF - LHR

Nonstop3h 10mBritish Airways

Sun 18/107:20LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 22/12£132

Thu 15/115:10KEF - LHR

1 stop16h 55mMultiple Airlines

Sun 18/107:20LHR - KEF

Nonstop3h 20mMultiple Airlines

Deal found 22/12£242

Thu 15/120:00KEF - LHR

1 stop11h 40mKLM

Sun 18/106:30LHR - KEF

1 stop12h 35mKLM

Deal found 22/12£268

Sat 17/111:55KEF - LHR

Nonstop3h 10mBritish Airways

Tue 20/107:35LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 20/12£144

Sat 17/114:20KEF - LHR

1 stop28h 55mMultiple Airlines

Tue 20/120:35LHR - KEF

Nonstop3h 20mMultiple Airlines

Deal found 21/12£241

Mon 19/116:20KEF - LHR

Nonstop3h 10mMultiple Airlines

Mon 26/107:35LHR - KEF

Nonstop3h 20mMultiple Airlines

Deal found 22/12£216

Mon 19/120:05KEF - LHR

1 stop12h 55mKLM

Mon 26/110:00LHR - KEF

1 stop9h 05mKLM

Deal found 22/12£238

Wed 21/111:50KEF - LHR

Nonstop3h 10mBritish Airways

Wed 28/107:30LHR - KEF

Nonstop3h 20mBritish Airways

Deal found 21/12£138

Wed 21/120:05KEF - LHR

1 stop17h 45mKLM

Wed 28/111:45LHR - KEF

1 stop7h 20mKLM

Deal found 21/12£187

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 22 December 2025.

Thu 5/311:45KEF - LHR

Nonstop3h 10mBritish Airways

Deal found 20/12£62

Thu 15/111:45KEF - LHR

Nonstop3h 10mBritish Airways

Deal found 22/12£73

Wed 3/611:15KEF - LHR

1 stop9h 20mScandinavian Airlines

Deal found 21/12£81

Thu 21/510:30KEF - LHR

Nonstop3h 10mBritish Airways

Deal found 20/12£84

Wed 4/211:50KEF - LHR

Nonstop3h 10mBritish Airways

Deal found 22/12£87

Thu 29/116:20KEF - LHR

Nonstop3h 10mIcelandair

Deal found 20/12£90

Fri 30/111:25KEF - LHR

1 stop9h 25mKLM

Deal found 21/12£90

Mon 23/320:05KEF - LHR

1 stop14h 40mKLM

Deal found 20/12£91

Sat 27/1211:55KEF - LHR

Nonstop3h 10mBritish Airways

Deal found 22/12£92

Sat 30/517:10KEF - LHR

1 stop15h 10mScandinavian Airlines

Deal found 21/12£93

Find flight deals from Keflavik Intl to Heathrow

Round-trip from	£132
One-way from	£62
Popular in	April
Cheapest in	December
Average price	£160
Good round-trip deal	£750 or less
Good one-way deal	£169 or less

British Airways
15/1-18/1
Nonstop
6h 30m total
Reykjavik to London

Search Deals

British Airways
5/3
Nonstop
3h 10m total
Reykjavik to London

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£31 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease (£16 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Reykjavik Keflavik Intl to London Heathrow.

Search Deals

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

Search Deals

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.

Fly from

Fly to

Route

Depart

Return

Price

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sat 17/1

11:55-15:05

Nonstop3h 10m

London Heathrow

Tue 20/1

07:35-10:55

Nonstop3h 20m

£144

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Wed 8/4

11:15-21:35

1 stop9h 20m

London Heathrow

Wed 22/4

18:40-09:40

1 stop16h 00m

£158

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 31/3

10:50-15:00

Nonstop3h 10m

London Heathrow

Tue 7/4

07:50-09:55

Nonstop3h 05m

£159

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 31/3

10:50-15:00

Nonstop3h 10m

London Heathrow

Wed 8/4

07:55-10:00

Nonstop3h 05m

£159

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 31/3

11:05-18:50

1 stop6h 45m

London Heathrow

Mon 6/4

10:35-17:35

1 stop8h 00m

£163

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sat 7/2

11:55-15:05

Nonstop3h 10m

London Heathrow

Sun 8/2

13:40-17:05

Nonstop3h 25m

£165

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 27/2

18:10-21:10

Nonstop3h 00m

London Heathrow

Mon 2/3

07:35-10:55

Nonstop3h 20m

£173

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sat 2/5

17:10-09:20

1 stop15h 10m

London Heathrow

Tue 5/5

19:50-10:25

1 stop15h 35m

£175

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sat 7/2

11:55-15:05

Nonstop3h 10m

London Heathrow

Mon 9/2

07:35-10:55

Nonstop3h 20m

£182

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sun 29/3

10:40-18:50

1 stop7h 10m

London Heathrow

Tue 7/4

10:20-16:15

1 stop6h 55m

£189

Flights are sorted by cheapest return flights first.

Deals found on 20/12

Showing 1-10 of 20 results

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.

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 month to book a flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport (average of £123). Flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport in September is currently the most expensive (average of £269). 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 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?

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 10m. British Airways provides one of the quickest options available for as low as £144. 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: Japan Airlines (89%), Turkish Airlines (88%), Icelandair (87%).
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 £118. While the most popular route (Reykjavik Keflavik Intl - London Heathrow) can be booked for £138 on average, our data indicates £426 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.
What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport (average of £123). Flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport in September is currently the most expensive (average of £269). 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.

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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?

Yes, Cheapflights offers price alerts on Keflavik Intl to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport from £62

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 5/3. 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 22 December 2025.

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 22 December 2025.

Find flight deals from Keflavik Intl to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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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

Everything you need to know about your flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport

What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

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

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

How often are flights from Reykjavik to London delayed?

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

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

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

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to Heathrow. 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 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?

What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport?

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Alternative routes for Keflavik Intl to Heathrow

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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 22 December 2025.