Find flights
Deals
When to book
FAQs

Cheap flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport from £74

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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LHR
23 Aug — 30 Aug1
1 adult

Cheap 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 18 August 2025.

Round-trip from

£132

One-way from

£74

Popular in

April

Cheapest in

March

Average price

£223

Good round-trip deal

£175 or less

Good one-way deal

£143 or less
British Airways
  • British Airways
  • 23/1-25/1
  • Nonstop
  • 6h 20m total
  • Reykjavik to London
Search Deals
British Airways
  • British Airways
  • 24/1
  • Nonstop
  • 3h 10m total
  • Reykjavik to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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

Find flight deals from Keflavik Intl to Heathrow

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 18 August 2025.

Thu 30/1011:30KEF - LHR
1 stop10h 05mScandinavian Airlines
Wed 5/1119:50LHR - KEF
1 stop14h 55mScandinavian Airlines
Deal found 16/8£142
Fri 28/1118:10KEF - LHR
Nonstop3h 00mBritish Airways
Mon 1/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 15/8£145
Wed 15/1011:05KEF - LHR
1 stop6h 45mScandinavian Airlines
Thu 23/1019:50LHR - KEF
1 stop12h 15mScandinavian Airlines
Deal found 16/8£155
Mon 15/913:00KEF - LHR
1 stop7h 35mScandinavian Airlines
Tue 16/906:40LHR - KEF
1 stop10h 40mScandinavian Airlines
Deal found 15/8£157
Thu 20/1111:30KEF - LHR
1 stop7h 20mMultiple Airlines
Thu 27/1107:25LHR - KEF
Nonstop3h 20mMultiple Airlines
Deal found 16/8£159
Thu 16/1011:05KEF - LHR
1 stop9h 30mScandinavian Airlines
Thu 23/1019:50LHR - KEF
1 stop12h 15mScandinavian Airlines
Deal found 16/8£160
Thu 20/1111:45KEF - LHR
Nonstop3h 10mBritish Airways
Thu 27/1107:25LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 16/8£161
Sat 4/1017:10KEF - LHR
1 stop15h 10mScandinavian Airlines
Mon 6/1006:40LHR - KEF
1 stop10h 40mScandinavian Airlines
Deal found 17/8£165
Tue 14/1010:20KEF - LHR
1 stop6h 20mScandinavian Airlines
Thu 23/1019:50LHR - KEF
1 stop12h 15mScandinavian Airlines
Deal found 16/8£167
Wed 1/1019:50KEF - LHR
1 stop10h 50mKLM
Sun 5/1006:30LHR - KEF
1 stop13h 40mKLM
Deal found 17/8£167
Wed 12/1111:30KEF - LHR
1 stop6h 10mScandinavian Airlines
Thu 20/1119:30LHR - KEF
1 stop15h 15mScandinavian Airlines
Deal found 17/8£168

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 18 August 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

Keflavik Intl

Fly to

Heathrow

Route

Depart

Return

Price

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 23/1

18:10-21:10

Nonstop3h 00m

London Heathrow

Sun 25/1

07:20-10:40

Nonstop3h 20m

£132

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 30/10

11:30-21:35

1 stop10h 05m

London Heathrow

Wed 5/11

19:50-10:45

1 stop14h 55m

£142

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Wed 4/2

11:50-15:00

Nonstop3h 10m

London Heathrow

Tue 10/2

07:35-10:55

Nonstop3h 20m

£142

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 30/1

11:50-15:00

Nonstop3h 10m

London Heathrow

Tue 3/2

07:35-10:55

Nonstop3h 20m

£145

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 28/11

18:10-21:10

Nonstop3h 00m

London Heathrow

Mon 1/12

07:35-10:55

Nonstop3h 20m

£145

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 26/12

18:10-21:10

Nonstop3h 00m

London Heathrow

Tue 6/1

07:35-10:55

Nonstop3h 20m

£145

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 14/11

18:10-21:10

Nonstop3h 00m

London Heathrow

Mon 17/11

07:35-10:55

Nonstop3h 20m

£151

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 13/11

11:45-14:55

Nonstop3h 10m

London Heathrow

Sun 16/11

07:20-10:40

Nonstop3h 20m

£152

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 7/11

11:30-21:40

1 stop10h 10m

London Heathrow

Mon 10/11

17:00-10:45

1 stop17h 45m

£153

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sat 24/1

11:55-15:05

Nonstop3h 10m

£74

Flights are sorted by cheapest return flights first.

Deals found on 16/8

Showing 1-10 of 17 results
1
2

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 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 £112). Flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £164). 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?

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 18 August 2025.

When flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 43% versus a flight in the morning.

Weekly flight availability from Reykjavik Keflavik Intl Airport to London Heathrow Airport

Explore weekly flight availability from Keflavik Intl to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 August 2025.

The most flights from KEF to LHR are scheduled on a Friday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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

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.

  • 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 (93%), Icelandair (88%), Emirates (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 £72. While the most popular route (Reykjavik Keflavik Intl - London Heathrow) can be booked for £132 on average our data indicates £284 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 £112). Flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

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
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Northampton
Deal
Luton
Wembley
Crawley
Ilford
Hayes
Ipswich
Southend-on-Sea
Winchester
Folkestone
Eastbourne
Maidstone
Watford
Chichester

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.