Cheap flights from London to Reykjavik Keflavik Intl Airport from $177

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KEF
6 Aug — 13 Aug1
1 adult

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 1 August 2025.

Round-trip from

$290

One-way from

$177

Popular in

July

Cheapest in

January

Average price

$487

Good round-trip deal

$356 or less

Good one-way deal

$85 or less
Icelandair
  • Icelandair
  • 20/1-23/1
  • Nonstop
  • 6h 40m total
  • London to Reykjavik
easyJet
  • easyJet
  • 21/9
  • Nonstop
  • 3h 05m total
  • London to Reykjavik
Highest demand for flights based on searches. 34% potential increase in price ($252 potential increase over avg. return price).
Cheapest flight prices on average. 7% potential price decrease ($34 potential savings vs. average return price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from London (LON) to Reykjavik Keflavik Intl.
Price to beat on a one-way flight from London (LON) to Reykjavik Keflavik Intl.

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 1 August 2025.

Mon 22/1215:30LTN - KEF
Nonstop3h 15measyJet
Wed 31/1211:30KEF - LTN
Nonstop2h 55measyJet
Deal found 31/7$293
Tue 2/911:40STN - KEF
Nonstop3h 05mPLAY
Fri 5/906:40KEF - STN
Nonstop3h 00mPLAY
Deal found 31/7$293
Mon 1/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Fri 5/1218:10KEF - LHR
Nonstop3h 00mBritish Airways
Deal found 31/7$298
Sat 22/1114:25LGW - KEF
Nonstop3h 20measyJet
Sun 23/1111:20KEF - LGW
Nonstop3h 10measyJet
Deal found 31/7$300
Tue 25/1108:50STN - KEF
1 stop7h 35measyJet
Thu 27/1109:25KEF - STN
1 stop12h 00measyJet
Deal found 30/7$300
Sun 14/906:50LTN - KEF
Nonstop3h 05mMultiple Airlines
Sun 21/919:25KEF - LTN
1 stop11h 20mMultiple Airlines
Deal found 31/7$303
Thu 13/1120:35LHR - KEF
Nonstop3h 20mIcelandair
Tue 18/1107:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 1/8$310
Tue 14/1015:40LGW - KEF
Nonstop3h 15mIcelandair
Mon 27/1010:30KEF - LGW
Nonstop3h 10mIcelandair
Deal found 30/7$323
Wed 5/1119:50LHR - KEF
1 stop14h 55mScandinavian Airlines
Mon 10/1113:00KEF - LHR
1 stop8h 35mScandinavian Airlines
Deal found 31/7$332
Fri 28/1108:25STN - KEF
1 stop5h 40mMultiple Airlines
Tue 2/1217:05KEF - STN
1 stop15h 15mMultiple Airlines
Deal found 1/8$340
Fri 7/1115:00LGW - KEF
Nonstop3h 20mMultiple Airlines
Sun 9/1108:00KEF - LGW
1 stop14h 15mMultiple Airlines
Deal found 31/7$354
Sat 13/911:40STN - KEF
Nonstop3h 05mWorldTicket
Sat 20/906:40KEF - STN
Nonstop3h 00mWorldTicket
Deal found 30/7$368

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 1 August 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

Tue 20/1

11:55-15:20

Nonstop3h 25m

Reykjavik Keflavik Intl

Fri 23/1

07:40-10:55

Nonstop3h 15m

$290

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Mon 12/1

07:35-10:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Fri 16/1

18:10-21:10

Nonstop3h 00m

$292

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Mon 22/12

15:30-18:45

Nonstop3h 15m

Reykjavik Keflavik Intl

Wed 31/12

11:30-14:25

Nonstop2h 55m

$293

LondonReykjavik

STN - KEF

STNKEF

London Stansted

Tue 2/9

11:40-13:45

Nonstop3h 05m

Reykjavik Keflavik Intl

Fri 5/9

06:40-10:40

Nonstop3h 00m

$293

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Sat 22/11

14:25-17:45

Nonstop3h 20m

Reykjavik Keflavik Intl

Sun 23/11

11:20-14:30

Nonstop3h 10m

$300

LondonReykjavik

STN - KEF

STNKEF

London Stansted

Tue 25/11

08:50-16:25

1 stop7h 35m

Reykjavik Keflavik Intl

Thu 27/11

09:25-21:25

1 stop12h 00m

$300

LondonReykjavik

LTN - KEF

LTNKEF

London Luton

Sun 14/9

06:50-08:55

Nonstop3h 05m

Reykjavik Keflavik Intl

Sun 21/9

19:25-07:45

1 stop11h 20m

$303

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 13/11

20:35-23:55

Nonstop3h 20m

Reykjavik Keflavik Intl

Tue 18/11

07:35-10:50

Nonstop3h 15m

$310

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 5/11

19:50-10:45

1 stop14h 55m

Reykjavik Keflavik Intl

Mon 10/11

13:00-21:35

1 stop8h 35m

$332

LondonReykjavik

LGW - KEF

LGWKEF

London Gatwick

Mon 12/1

09:10-15:00

1 stop5h 50m

Reykjavik Keflavik Intl

Fri 16/1

19:15-22:25

Nonstop3h 10m

$334

Flights are sorted by cheapest return flights first.

Deals found on 31/7

Showing 1-10 of 45 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 25 July 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 1 August 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 33% 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 1 August 2025.

The most flights from LON to KEF are scheduled on a Thursday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 1 August 2025.
Read reviews from past customers who have flown with Jet2, KLM, andLOT 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.

Comfort

7.7

Crew

8.8

Food

7.3

Overall

8.3

Boarding

8.2

Entertainment

6.2

Reviews

1 / 16
8.0
Excellent

Anonymous,Mar 2025

GVA - LBA

Good other than the 15-20 min walk to boarding gate from terminal.
8.3
Very Good

Comfort

7.7

Crew

8.8

Food

7.3

Overall

8.3

Boarding

8.2

Entertainment

6.2

Reviews

1 / 16
8.0
Excellent

Anonymous,Mar 2025

GVA - LBA

Good other than the 15-20 min walk to boarding gate from terminal.

Comfort

7.7

Crew

8.8

Food

7.3

Overall

8.3

Boarding

8.2

Entertainment

6.2

Reviews

1 / 16
8.0
Excellent

Anonymous,Mar 2025

GVA - LBA

Good other than the 15-20 min walk to boarding gate from terminal.

Comfort

7.7

Crew

8.8

Food

7.3

Overall

8.3

Boarding

8.2

Entertainment

6.2

Reviews

1 / 16
8.0
Excellent

Anonymous,Mar 2025

GVA - LBA

Good other than the 15-20 min walk to boarding gate from terminal.

Comfort

7.7

Crew

8.8

Food

7.3

Overall

8.3

Boarding

8.2

Entertainment

6.2

Reviews

1 / 16
8.0
Excellent

Anonymous,Mar 2025

GVA - LBA

Good other than the 15-20 min walk to boarding gate from terminal.

Comfort

7.7

Crew

8.8

Food

7.3

Overall

8.3

Boarding

8.2

Entertainment

6.2

Reviews

1 / 16
8.0
Excellent

Anonymous,Mar 2025

GVA - LBA

Good other than the 15-20 min walk to boarding gate from terminal.

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?

    Cheapflights users have booked flights from London to Reykjavik Keflavik Intl Airport round-trip from $290. Other airlines that can offer you cheap pricing are British Airways, from $292, and easyJet, from $293. Users have found that Icelandair is 5% 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 ($177), British Airways ($178), and PLAY ($203).

  • What are the most popular routes 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: Emirates (100%), Icelandair (88%), TAP AIR PORTUGAL (88%).

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

    On average you can expect to pay $397 for a flight from London to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $224 while the most popular route, (London Luton - Reykjavik Keflavik Intl) is currently priced at $141.

  • 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

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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 1 August 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$280Average$389FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

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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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