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 8% of flights being delayed.

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 125 minutes.

What are the cheapest airlines to fly from Reykjavik Keflavik Intl Airport to London Heathrow Airport one-way?

The cheapet airlines for a one-way flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport are British Airways (£137), Scandinavian Airlines (£195), and Icelandair (£207).

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: Turkish Airlines (85%), Icelandair (84%), Emirates (84%).

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.

£114+ Cheap Flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport

Cheap flight deals from 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 4 October 2026.

Sat 7/1116:05 -

Nonstop3h 00m

Sun 8/1107:30 -

Nonstop3h 15m

Deal found 1/10£156

Fri 13/1118:10 -

Nonstop3h 00m

Mon 16/1107:35 -

Nonstop3h 15m

Deal found 3/10£180

Sat 14/1118:05 -

1 stop21h 55m

Sat 21/1120:35 -

Nonstop3h 15m

Deal found 30/9£183

Mon 16/1111:55 -

1 stop21h 40m

Mon 23/1120:35 -

Nonstop3h 15m

Deal found 2/10£183

Sat 12/1219:00 -

2 stops25h 05m

Tue 15/1209:55 -

2 stops23h 55m

Deal found 2/10£185

Sat 5/1216:05 -

Nonstop3h 00m

Mon 7/1207:35 -

Nonstop3h 15m

Deal found 3/10£186

Sat 5/1216:05 -

Nonstop3h 00m

Fri 11/1213:45 -

Nonstop3h 20m

Deal found 3/10£187

Thu 12/1115:20 -

1 stop7h 00m

Wed 18/1116:40 -

1 stop21h 40m

Deal found 2/10£190

Sat 21/1110:30 -

2 stops21h 35m

Mon 23/1120:35 -

Nonstop3h 15m

Deal found 30/9£191

Find flight deals from Keflavik Intl to Heathrow

Round-trip from	£156
One-way from	£114
Popular in	September
Cheapest in	March
Average price	£236
Good round-trip deal	£635 or less
Good one-way deal	£167 or less

British Airways
7/11-8/11
Nonstop
6h 15m total
Reykjavik to London

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British Airways
4/12-31/12
Nonstop
3h 00m total
Reykjavik to London

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Highest demand for flights based on searches. 14% potential increase in price (£40 potential increase over avg. return price).

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Cheapest flight prices on average. 7% potential price decrease (£17 potential savings vs. average return price).

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Average for round-trip flights in October 2026

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

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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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Price

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ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Fri 4/12

18:10-21:10

Nonstop3h 00m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£114

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sat 5/12

16:05-19:05

Nonstop3h 00m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£114

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sun 7/3

14:45-09:00

1 stop18h 15m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£123

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Fri 20/11

18:10-21:10

Nonstop3h 00m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£134

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Wed 30/12

14:45-20:50

1 stop6h 05m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£140

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Mon 28/12

14:45-20:50

1 stop6h 05m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£142

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Fri 1/1

18:10-21:10

Nonstop3h 00m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£152

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sun 6/12

11:50-15:00

Nonstop3h 10m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£152

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sat 27/3

16:05-19:05

Nonstop3h 00m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£153

ReykjavikLondon

KEF Reykjavik Keflavik Intl - LHR London Heathrow

KEFLHR

Reykjavik Keflavik Intl

Sat 31/10

16:05-19:05

Nonstop3h 00m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£167

Flights are sorted by cheapest return flights first.

Deals found on 3/10

Showing 1-10 of 22 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.

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. British Airways provides one of the quickest options available for as low as £209. 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 cheapest airlines to fly from Reykjavik Keflavik Intl Airport to London Heathrow Airport one-way?
The cheapet airlines for a one-way flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport are British Airways (£137), Scandinavian Airlines (£195), and Icelandair (£207).
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: Turkish Airlines (85%), Icelandair (84%), Emirates (84%).
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 £156. While the most popular route (Reykjavik Keflavik Intl - London Heathrow) can be booked for £163 on average, our data indicates £234 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?

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 £114

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/12. 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 4 October 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 4 October 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 4 October 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 4 October 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 4 October 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 4 October 2026.

Last-minute flights from Keflavik Intl to HeathrowDiscover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated 4 October 2026 and is based on user searches.

Discover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated 4 October 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 4 October 2026.

Search for one-way flight options from Keflavik Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 4 October 2026.

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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 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 125 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 8% 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 cheapest airlines to fly from Reykjavik Keflavik Intl Airport to London Heathrow Airport one-way?

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?

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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 4 October 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 4 October 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 4 October 2026.

Last-minute flights from Keflavik Intl to Heathrow
Discover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated 4 October 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 4 October 2026.