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Cheap flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport from £129

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LHR
5 Aug — 12 Aug1
1 adult
1 adult, Economy, 0 bags

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 6 July 2026.

Fri 13/1111:50
KEF
-
LHR
Nonstop3h 10m
British Airways
Fri 20/1113:50
LHR
-
KEF
Nonstop3h 25m
British Airways
Deal found 5/7£156
Wed 18/1111:30
KEF
-
LHR
1 stop7h 20m
Scandinavian Airlines
Tue 24/1110:35
LHR
-
KEF
1 stop24h 10m
Scandinavian Airlines
Deal found 5/7£174
Tue 15/1214:45
KEF
-
LHR
1 stop18h 15m
KLM
Wed 6/120:25
LHR
-
KEF
1 stop17h 20m
KLM
Deal found 6/7£177
Wed 18/1111:30
KEF
-
LHR
1 stop22h 05m
Multiple Airlines
Tue 24/1107:35
LHR
-
KEF
Nonstop3h 20m
Multiple Airlines
Deal found 5/7£179
Wed 18/1111:50
KEF
-
LHR
Nonstop3h 10m
British Airways
Tue 24/1107:35
LHR
-
KEF
Nonstop3h 20m
British Airways
Deal found 5/7£180
Wed 5/818:35
KEF
-
LHR
1 stop12h 05m
Multiple Airlines
Sun 30/815:00
LHR
-
KEF
1 stop10h 15m
Multiple Airlines
Deal found 4/7£189
Sat 12/918:35
KEF
-
LHR
1 stop14h 00m
Scandinavian Airlines
Sat 19/910:35
LHR
-
KEF
1 stop8h 10m
Scandinavian Airlines
Deal found 2/7£190
Mon 16/1111:50
KEF
-
LHR
Nonstop3h 10m
British Airways
Wed 18/1107:30
LHR
-
KEF
Nonstop3h 20m
British Airways
Deal found 4/7£192
Sun 11/1000:55
KEF
-
LHR
1 stop14h 30m
Scandinavian Airlines
Wed 14/1010:20
LHR
-
KEF
1 stop6h 55m
Scandinavian Airlines
Deal found 1/7£196
Mon 10/818:25
KEF
-
LHR
1 stop14h 10m
Scandinavian Airlines
Thu 13/810:35
LHR
-
KEF
1 stop8h 00m
Scandinavian Airlines
Deal found 1/7£197

Find flight deals from Keflavik Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 July 2026.

Round-trip from

£156

One-way from

£129

Popular in

July

Cheapest in

January

Average price

£456

Good round-trip deal

£227 or less

Good one-way deal

£225 or less
British Airways
  • British Airways
  • 13/11-20/11
  • Nonstop
  • 6h 35m total
  • Reykjavik to London
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Scandinavian Airlines
  • Scandinavian Airlines
  • 6/10
  • 1 total stop
  • 22h 55m total
  • Reykjavik to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£60 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in July 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

 
Customise your flight search to find flights from Keflavik Intl to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 6 July 2026.
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

Cheapest return flight

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 29/10

11:45-14:55

Nonstop3h 10m

London Heathrow

Wed 4/11

07:30-10:50

Nonstop3h 20m

£261

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Mon 17/8

18:10-09:35

1 stop14h 25m

London Heathrow

Mon 24/8

07:40-09:45

Nonstop3h 05m

£269

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 30/10

07:35-10:50

Nonstop3h 15m

London Heathrow

Tue 3/11

20:35-23:50

Nonstop3h 15m

£277

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Mon 5/10

10:40-14:50

Nonstop3h 10m

London Heathrow

Sat 10/10

07:20-09:25

Nonstop3h 05m

£291
Fastest return journey

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sat 3/10

10:20-14:25

Nonstop3h 05m

London Heathrow

Sat 10/10

07:20-09:25

Nonstop3h 05m

£291

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 27/10

11:50-15:00

Nonstop3h 10m

London Heathrow

Tue 3/11

07:35-10:55

Nonstop3h 20m

£295

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 18/9

17:05-09:20

1 stop15h 15m

London Heathrow

Sat 26/9

15:35-09:50

1 stop19h 15m

£299

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 13/8

18:25-14:35

1 stop19h 10m

London Heathrow

Sun 16/8

10:35-17:45

1 stop8h 10m

£314

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 11/9

07:55-09:35

1 stop24h 40m

London Heathrow

Thu 24/9

06:40-16:15

1 stop10h 35m

£338

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Mon 24/8

09:10-19:25

2 stops9h 15m

London Heathrow

Sun 30/8

11:45-00:35

2 stops13h 50m

£364

Flights are sorted by cheapest return flights first.

Deals found on 5/7

Showing 1-10 of 21 resultsSorted by cheapest first
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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.
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

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

Find hourly flight availability from Keflavik Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 July 2026.

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

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?

    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 £261. The distance from Reykjavik Keflavik Intl Airport to London Heathrow Airport is about 1177 mi. Generally, flights for this route are direct.

  • 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: Icelandair (88%), Emirates (88%), Air India (88%).

  • 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 £177. While the most popular route (Reykjavik Keflavik Intl - London Heathrow) can be booked for £156 on average, our data indicates £514 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Swindon
Eastbourne
Poole
Southall
Aylesbury
Romford

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Alternative routes for Keflavik Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Keflavik Intl to Gatwick flights
Keflavik Intl to Luton flights
Keflavik Intl to Stansted flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Keflavik Intl to Heathrow?

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.

Why should you use Cheapflights to find cheap flight tickets from Keflavik Intl to Heathrow?

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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