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Cheap flights from London to Reykjavik Keflavik Intl Airport from £79

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KEF
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from London to Reykjavik Keflavik Intl are usually found in January or February, booked 84 days in advance, depart on a Thursday or Wednesday and return on a Sunday

Cheap flight deals from London to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Keflavik Intl (KEF). 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 13 June 2025.

Round-trip from

£129

One-way from

£79

Popular in

July

Cheapest in

January

Average price

£181

Good round-trip deal

£78 or less

Good one-way deal

£37 or less
Icelandair
  • Icelandair
  • 4/12-10/12
  • Nonstop
  • 6h 30m total
  • London to Reykjavik
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Norwegian
  • Norwegian
  • 22/10
  • 1 total stop
  • 17h 45m total
  • London to Reykjavik
Search Deals
Highest demand for flights based on searches. 33% potential increase in price (£53 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from London (LON) to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from London (LON) to Reykjavik Keflavik Intl.
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Find flight deals from London to Keflavik Intl

Cheapest flights from London to Keflavik Intl
Explore the most affordable flight options available from London to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Sun 31/806:50LTN - KEF
Nonstop3h 05measyJet
Wed 10/909:00KEF - LTN
Nonstop3h 00measyJet
Deal found 10/6£118
Thu 4/1212:15LHR - KEF
Nonstop3h 15mIcelandair
Wed 10/1207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 10/6£129
Fri 5/911:40STN - KEF
Nonstop3h 05mPLAY
Fri 12/906:40KEF - STN
Nonstop3h 00mPLAY
Deal found 11/6£131
Sat 22/1115:35LHR - KEF
1 stop18h 55mScandinavian Airlines
Thu 27/1111:30KEF - LHR
1 stop10h 05mScandinavian Airlines
Deal found 11/6£137
Mon 24/1121:40LTN - KEF
1 stop12h 00mMultiple Airlines
Fri 28/1119:40KEF - LTN
Nonstop2h 55mMultiple Airlines
Deal found 12/6£138
Sat 6/1214:25LGW - KEF
Nonstop3h 20measyJet
Thu 11/1212:30KEF - LGW
1 stop9h 20measyJet
Deal found 12/6£139
Sun 30/1113:45LHR - KEF
Nonstop3h 25mBritish Airways
Wed 3/1211:45KEF - LHR
Nonstop3h 15mBritish Airways
Deal found 12/6£143
Mon 20/1013:55LGW - KEF
2 stops30h 25mMultiple Airlines
Fri 24/1009:00KEF - LGW
Nonstop3h 15mMultiple Airlines
Deal found 11/6£143
Thu 4/911:40STN - KEF
Nonstop3h 05mMultiple Airlines
Mon 8/909:35KEF - STN
1 stop8h 55mMultiple Airlines
Deal found 11/6£146
Thu 18/1211:55LGW - KEF
Nonstop3h 25mIcelandair
Mon 29/1207:40KEF - LGW
Nonstop3h 15mIcelandair
Deal found 12/6£147
Sat 6/1206:40LHR - KEF
1 stop27h 50mMultiple Airlines
Thu 11/1211:40KEF - LHR
Nonstop3h 15mMultiple Airlines
Deal found 12/6£148
Fri 5/921:40STN - KEF
1 stop11h 10measyJet
Mon 8/909:35KEF - STN
1 stop10h 25measyJet
Deal found 12/6£149

Cheapflights Fare Finder

Customise your flight search to find flights from London to Keflavik Intl 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 13 June 2025.
Use the filters below to find and compare flights from London to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

London

Fly to

Keflavik Intl

Route

Depart

Return

Price

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 4/12

12:15-15:30

Nonstop3h 15m

Reykjavik Keflavik Intl

Wed 10/12

07:35-10:50

Nonstop3h 15m

£129

LondonReykjavik

STN - KEF

STNKEF

London Stansted

Fri 5/9

11:40-13:45

Nonstop3h 05m

Reykjavik Keflavik Intl

Fri 12/9

06:40-10:40

Nonstop3h 00m

£131

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Thu 4/12

06:30-09:45

Nonstop3h 15m

Reykjavik Keflavik Intl

Wed 10/12

11:30-14:25

Nonstop2h 55m

£133

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 22/11

15:35-10:30

1 stop18h 55m

Reykjavik Keflavik Intl

Thu 27/11

11:30-21:35

1 stop10h 05m

£137

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Mon 24/11

21:40-09:40

1 stop12h 00m

Reykjavik Keflavik Intl

Fri 28/11

19:40-22:35

Nonstop2h 55m

£138

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Sat 6/12

14:25-17:45

Nonstop3h 20m

Reykjavik Keflavik Intl

Thu 11/12

12:30-21:50

1 stop9h 20m

£139

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 30/11

13:45-17:10

Nonstop3h 25m

Reykjavik Keflavik Intl

Wed 3/12

11:45-15:00

Nonstop3h 15m

£143

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Mon 20/10

13:55-19:20

2 stops30h 25m

Reykjavik Keflavik Intl

Fri 24/10

09:00-13:15

Nonstop3h 15m

£143

LondonReykjavik

STN - KEF

STNKEF

London Stansted

Thu 4/9

11:40-13:45

Nonstop3h 05m

Reykjavik Keflavik Intl

Mon 8/9

09:35-19:30

1 stop8h 55m

£146

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 6/12

06:40-10:30

1 stop27h 50m

Reykjavik Keflavik Intl

Thu 11/12

11:40-14:55

Nonstop3h 15m

£148

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 53 results
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Best time to book a flight from London to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from London 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 London to Reykjavik Keflavik Intl Airport

How far ahead should I book a flight from London to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a return flight from London to Keflavik Intl. Price data was last updated on 9 June 2025.

The best time to book flights from London to Reykjavik Keflavik Intl Airport is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from London to Reykjavik Keflavik Intl Airport (average of £75). Flying from London to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £289). 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 LON to KEF?

Find hourly flight availability from London to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

A simple way to save on the total cost of your ticket is to fly from London to Reykjavik Keflavik Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 37% on your trip compared to booking a flight at midday.

What is the cheapest day to fly from London to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly return from London to Keflavik Intl. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Reykjavik Keflavik Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from London to Keflavik Intl. 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 13 June 2025.

The most flights from LON to KEF are scheduled on a Wednesday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Keflavik Intl by month

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

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 40.0 - 80.0 inches per month. January is typically the wettest month, when rainfall can reach 80.0 mm. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 40.0 mm.

Temperature in Keflavik Intl by month

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

If weather is an important factor for your trip to Reykjavik Keflavik Intl 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 11.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated 13 June 2025.
Read through reviews of airlines operating flights from London to Reykjavik, such as KLM, airBaltic and Norwegian. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
airBaltic
7.8
Good
179 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Norwegian
7.8
Good
233 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
LOT
7.6
Good
1,079 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Austrian Airlines
7.6
Good
802 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

Related info for your journey

Find useful and relevant information for your journey from London to Keflavik Intl. 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 London to Reykjavik Keflavik Intl Airport round-trip?

    Currently priced at £129, Icelandair will fly you from London to Reykjavik Keflavik Intl Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from PLAY and easyJet - these airlines can fly you to your destination from £131 and £133, respectively. You may be able to fly from London to Reykjavik Keflavik Intl Airport for 9% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Norwegian, which is currently one of the cheapest options available, starting at £79. PLAY flights start at £80 while deals on British Airways start at £81 one-way.

  • What are the most popular routes from London to Reykjavik Keflavik Intl Airport?

    Most travelers choose London Heathrow - Reykjavik Keflavik Intl, London Gatwick - Reykjavik Keflavik Intl or London Stansted - Reykjavik Keflavik Intl when deciding on the best route from London to Reykjavik Keflavik Intl Airport.

  • What are the most reliable airlines from London to Reykjavik Keflavik Intl Airport?

    No one likes to see their flight delayed. When booking a flight from London to Reykjavik Keflavik Intl Airport consider choosing Emirates (100%), Turkish Airlines (93%) or American Airlines (92%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London to Reykjavik Keflavik Intl Airport?

    The cheapest flight price from London to Reykjavik Keflavik Intl Airport is £126. On average you can expect to pay £877. The most popular route, (London Heathrow - Reykjavik Keflavik Intl), can usually be booked for £123.

  • Can I find deals for flights from London to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on London to Keflavik Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Keflavik Intl.

  • Can I find deals for business class flights from London to Keflavik Intl?

    Yes. Cheapflights offers flight deals from London to Keflavik Intl 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 London to Reykjavik Keflavik Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from London to Reykjavik Keflavik Intl Airport (average of £75). Flying from London to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £289). 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

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Keflavik

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Fly from London to Keflavik Intl on these airlines

Choose from the following airlines for your flight from London to Keflavik Intl. Flights are based on user searches made on Cheapflights and were last updated on 13 June 2025.
easyJet flights from London to Reykjavik Keflavik Intl
PLAY flights from London to Reykjavik Keflavik Intl

Top 5 airlines flying from London to Keflavik Intl

Discover the top 5 airlines that operate flights from London to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£48Average£99FlexibilityNo cancel feeOn-time86%
Search easyJet flights
PLAYCheapest£74Average£136FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£112Average£222FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£113Average£195FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£133Average£270FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

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

Deals for London to Keflavik Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from London to Keflavik Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to Keflavik Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Keflavik Intl flexibly with Cheapflights today.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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