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Cheap flights from London to Reykjavik Keflavik Intl 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KEF
16 Oct — 23 Oct1
1 adult
1 adult, Economy

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 16 September 2025.

Round-trip from

$216

One-way from

$129

Popular in

July

Cheapest in

January

Average price

$303

Good round-trip deal

$287 or less

Good one-way deal

$1,036 or less
easyJet
  • easyJet
  • 4/11-8/11
  • Nonstop
  • 6h 40m total
  • London to Reykjavik
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easyJet
  • easyJet
  • 11/11
  • 1 total stop
  • 7h 40m total
  • London to Reykjavik
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Highest demand for flights based on searches. 31% potential increase in price ($209 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average return price).
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Average for round-trip flights in September 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 16 September 2025.

Tue 4/1108:00LGW - KEF
Nonstop3h 30measyJet
Sat 8/1118:35KEF - LGW
Nonstop3h 10measyJet
Deal found 15/9$216
Wed 5/1113:55LGW - KEF
Nonstop3h 20measyJet
Mon 10/1112:00KEF - LGW
Nonstop3h 10measyJet
Deal found 15/9$218
Thu 30/1014:00LTN - KEF
Nonstop3h 15measyJet
Wed 5/1111:55KEF - LTN
Nonstop2h 55measyJet
Deal found 15/9$221
Thu 30/1014:00LTN - KEF
Nonstop3h 15measyJet
Thu 6/1109:25KEF - LTN
1 stop12h 30measyJet
Deal found 15/9$222
Thu 13/1114:00LTN - KEF
Nonstop3h 15measyJet
Sun 16/1110:05KEF - LTN
Nonstop2h 55measyJet
Deal found 14/9$224
Mon 3/1107:40LGW - KEF
Nonstop3h 30measyJet
Fri 7/1119:15KEF - LGW
Nonstop3h 10measyJet
Deal found 14/9$224
Wed 5/1108:00LTN - KEF
Nonstop3h 15measyJet
Thu 6/1109:25KEF - LTN
1 stop12h 30measyJet
Deal found 15/9$225
Sun 2/1107:00LGW - KEF
Nonstop3h 30measyJet
Wed 5/1118:05KEF - LGW
Nonstop3h 10measyJet
Deal found 14/9$225
Mon 10/1108:00LTN - KEF
Nonstop3h 15measyJet
Tue 18/1117:05KEF - LTN
1 stop15h 10measyJet
Deal found 14/9$227
Mon 10/1107:40LGW - KEF
Nonstop3h 30measyJet
Fri 14/1119:45KEF - LGW
1 stop12h 05measyJet
Deal found 15/9$227
Sat 20/1215:50LTN - KEF
Nonstop3h 15measyJet
Sun 21/1210:05KEF - LTN
Nonstop2h 55measyJet
Deal found 14/9$228
Fri 19/1215:40LTN - KEF
Nonstop3h 15measyJet
Sun 21/1210:05KEF - LTN
Nonstop2h 55measyJet
Deal found 14/9$230

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 647,157 searches. Data last updated 16 September 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

LGW - KEF

LGWKEF

London Gatwick

Sat 8/11

14:25-17:45

Nonstop3h 20m

Reykjavik Keflavik Intl

Wed 12/11

18:05-21:15

Nonstop3h 10m

$218

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Mon 23/2

08:00-11:15

Nonstop3h 15m

Reykjavik Keflavik Intl

Sun 1/3

10:05-13:00

Nonstop2h 55m

$222

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Thu 30/10

14:00-17:15

Nonstop3h 15m

Reykjavik Keflavik Intl

Thu 6/11

09:25-21:55

1 stop12h 30m

$222

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Wed 4/2

08:00-11:15

Nonstop3h 15m

Reykjavik Keflavik Intl

Wed 11/2

11:50-22:35

1 stop10h 45m

$222

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Thu 13/11

14:00-17:15

Nonstop3h 15m

Reykjavik Keflavik Intl

Sun 16/11

10:05-13:00

Nonstop2h 55m

$224

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Fri 21/11

15:00-18:20

Nonstop3h 20m

Reykjavik Keflavik Intl

Sat 29/11

18:35-21:45

Nonstop3h 10m

$228

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Thu 18/12

13:55-17:15

Nonstop3h 20m

Reykjavik Keflavik Intl

Sun 21/12

11:20-14:30

Nonstop3h 10m

$230

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Sun 2/11

05:00-08:15

Nonstop3h 15m

Reykjavik Keflavik Intl

Sun 9/11

10:05-13:00

Nonstop2h 55m

$231

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Mon 17/11

07:40-11:10

Nonstop3h 30m

Reykjavik Keflavik Intl

Thu 27/11

18:05-21:15

Nonstop3h 10m

$234

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 5/11

07:30-10:50

Nonstop3h 20m

Reykjavik Keflavik Intl

Sun 9/11

17:55-20:55

Nonstop3h 00m

$245

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 60 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 12 September 2025.

To ensure you get the cheapest price possible for a flight from London to Reykjavik Keflavik Intl Airport, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 16 September 2025.

When flying from London to Reykjavik Keflavik Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 31% versus a flight at midday.

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 16 September 2025.

The most flights from LON to KEF are scheduled on a Friday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (7 on average).

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

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 16 September 2025.
Read reviews from past customers who have flown with Icelandair and PLAY from London to Reykjavik Keflavik Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.0
Good
544 reviews
Check prices

Comfort

6.9

Entertainment

7.0

Food

6.2

Overall

7.0

Crew

8.0

Boarding

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
Icelandair
7.0
Good
544 reviews
Icelandair
7.0
Good
544 reviews
Check prices

Comfort

6.9

Entertainment

7.0

Food

6.2

Overall

7.0

Crew

8.0

Boarding

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
PLAY
7.0
Good
Icelandair
7.0
Good
544 reviews
Check prices

Comfort

6.9

Entertainment

7.0

Food

6.2

Overall

7.0

Crew

8.0

Boarding

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

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.

  • How long is the flight from London to Reykjavik Keflavik Intl Airport?

    There are many flights that can get you from London to Reykjavik Keflavik Intl Airport in 3h. Fly via easyJet, British Airways, or Jet2 to get the fastest option. Airlines will cover a distance of 1883 km. Most flights are nonstop.

  • What is the cheapest airline to fly from London to Reykjavik Keflavik Intl Airport round-trip?

    Cheapflights users have booked flights from London to Reykjavik Keflavik Intl Airport round-trip from $270. Users have found that Icelandair is 9% cheaper than the other options available to this destination.

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

    The cheapet airlines for a one-way flight from London to Reykjavik Keflavik Intl Airport are easyJet ($129), PLAY ($134), and Icelandair ($159).

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

    Most travellers choose London Luton - Reykjavik Keflavik Intl, London Stansted - Reykjavik Keflavik Intl or London City - 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?

    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 London to Reykjavik Keflavik Intl Airport on time: American Airlines (87%), Qatar Airways (87%), Japan Airlines (87%).

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

    On average you can expect to pay $318 for a flight from London to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $204 while the most popular route, (London Luton - Reykjavik Keflavik Intl) is currently priced at $137.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from London to Keflavik Intl

Discover the top airline 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 647,157 searches. Data last updated 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$270Average$339FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

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 London to Keflavik Intl?

Cheapflights makes it easy to find London to Keflavik Intl 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 London to Keflavik Intl?

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

Yes! Cheapflights helps users easily find flights from London to Keflavik Intl with no change fees.

Can Cheapflights notify me if prices for flights from London to Keflavik Intl become cheaper?

Yes! Start tracking prices for London to Keflavik Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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