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Cheap flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport from £64

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 20/3. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LHR
26 helmi — 5 maalis1
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 21 helmikuu 2025.

Round-trip from

£125

One-way from

£64

Popular in

November

Cheapest in

March

Average price

£262

Good round-trip deal

£163 or less

Good one-way deal

£139 or less
British Airways
  • British Airways
  • 20/3-23/3
  • Nonstop
  • 6h 35m total
  • Reykjavik to London
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British Airways
  • British Airways
  • 20/3
  • Nonstop
  • 3h 15m total
  • Reykjavik to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£18 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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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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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 21 helmikuu 2025.

to 20/311:40KEF - LHR
Nonstop3h 15mBritish Airways
su 23/307:20LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 20/2£125
ke 19/316:20KEF - LHR
Nonstop3h 10mIcelandair
ti 25/320:40LHR - KEF
Nonstop3h 15mIcelandair
Deal found 20/2£135
ke 21/511:05KEF - LHR
1 stop6h 45mMultiple Airlines
su 25/521:25LHR - KEF
Nonstop3h 10mMultiple Airlines
Deal found 20/2£192
ti 1/414:20KEF - LHR
1 stop6h 50mLufthansa
ke 9/407:25LHR - KEF
2 stops25h 55mLufthansa
Deal found 20/2£244
pe 28/315:40KEF - LHR
1 stop6h 00mScandinavian Airlines
ma 31/318:40LHR - KEF
1 stop15h 50mScandinavian Airlines
Deal found 20/2£252
ti 3/609:25KEF - LHR
1 stop21h 30mSWISS
ke 6/820:05LHR - KEF
1 stop13h 15mSWISS
Deal found 20/2£273

Find flights from Keflavik Intl to Heathrow within your budget

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 21 helmikuu 2025.

Fly from

Keflavik Intl

Fly to

Heathrow

Route

Depart

Return

Price

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

to 20/3

11:40-14:55

Nonstop3h 15m

London Heathrow

su 23/3

07:20-10:40

Nonstop3h 20m

£125

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

ke 19/3

16:20-19:30

Nonstop3h 10m

London Heathrow

ti 25/3

20:40-23:55

Nonstop3h 15m

£135

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

ke 21/5

11:05-18:50

1 stop6h 45m

London Heathrow

su 25/5

21:25-23:35

Nonstop3h 10m

£192

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

ti 1/4

14:20-22:10

1 stop6h 50m

London Heathrow

ke 9/4

07:25-08:20

2 stops25h 55m

£244

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

pe 28/3

15:40-21:40

1 stop6h 00m

London Heathrow

ma 31/3

18:40-09:30

1 stop15h 50m

£252

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

ti 3/6

09:25-07:55

1 stop21h 30m

London Heathrow

ke 6/8

20:05-08:20

1 stop13h 15m

£273

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

to 20/3

11:40-14:55

Nonstop3h 15m

£64

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

to 22/5

11:05-18:50

1 stop6h 45m

£78

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

ke 12/3

18:10-14:25

1 stop20h 15m

£101

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

la 5/4

01:30-10:35

1 stop8h 05m

£102

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 15 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.

Travel insights for flights from Keflavik Intl to Heathrow

Get recent, data-driven insights about flights from Keflavik Intl to Heathrow including ideal travel times, pricing trends, and more.

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 £163). 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 21 helmikuu 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 39% 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 21 helmikuu 2025.

The most flights from KEF to LHR are scheduled on a Friday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

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.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 21 helmikuu 2025.
Get a feel of what it's like to fly with KLM, Austrian Airlines and SWISS from Reykjavik to London by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,333 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Austrian Airlines
7.6
Good
773 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,568 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Scandinavian Airlines
7.3
Good
1,325 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Icelandair
7.1
Good
491 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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 cheapest airlines flying from Reykjavik Keflavik Intl Airport to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport round-trip from £125. Other airlines that can offer you cheap pricing are Icelandair, from £135, and Lufthansa, from £244. British Airways is priced at 43% lower than the current average price of a flight leaving 3 months from now.

  • 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 (£64), Scandinavian Airlines (£78), and Iberia (£102).

  • 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: Emirates (89%), American Airlines (77%), British Airways (77%).

  • 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 £82. While the most popular route (Reykjavik Keflavik Intl - London Heathrow) can be booked for £125 on average our data indicates £596 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 £163). 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 Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Croydon
Gatwick
Slough
Luton
Ilford
Hayes
Eastbourne
Swindon
Northampton
Wembley
Southend-on-Sea
Ipswich
Winchester
Maidstone
Crawley
Southall
Watford

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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 Stansted flights
Keflavik Intl to Luton flights

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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.

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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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