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Cheap flights from Reykjavik Keflavik Intl Airport to London from £50

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LON
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Reykjavik Keflavik Intl to London are usually found in February or March, booked 67 days in advance, depart on a Sunday or Friday and return on a Tuesday

Cheap flight deals from Keflavik Intl to London

Enter your travel dates to find the best prices.

Cheapest flights from Keflavik Intl to London
Explore the most affordable flight options available from Keflavik Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.

Fri 5/1219:40KEF - LTN
Nonstop3h 00measyJet
Sun 7/1206:00LTN - KEF
Nonstop3h 15measyJet
Deal found 3/12£123
Fri 5/1219:15KEF - LGW
Nonstop3h 10measyJet
Sun 7/1207:00LGW - KEF
Nonstop3h 30measyJet
Deal found 4/12£128
Fri 5/1218:10KEF - LHR
Nonstop3h 00mBritish Airways
Sun 7/1213:40LHR - KEF
Nonstop3h 25mBritish Airways
Deal found 4/12£137
Thu 4/1217:55KEF - LTN
Nonstop2h 55measyJet
Mon 8/1208:00LTN - KEF
Nonstop3h 15measyJet
Deal found 4/12£160
Thu 11/1217:40KEF - LTN
Nonstop2h 55mMultiple Airlines
Sat 13/1220:50LTN - KEF
1 stop13h 45mMultiple Airlines
Deal found 3/12£162
Thu 11/1217:40KEF - LTN
Nonstop2h 55measyJet
Sun 14/1206:00LTN - KEF
Nonstop3h 15measyJet
Deal found 3/12£163
Thu 4/1218:05KEF - LGW
Nonstop3h 10measyJet
Mon 8/1207:40LGW - KEF
Nonstop3h 30measyJet
Deal found 4/12£169
Thu 11/1217:40KEF - LTN
Nonstop2h 55mMultiple Airlines
Sun 14/1206:55LTN - KEF
2 stops12h 00mMultiple Airlines
Deal found 3/12£175
Thu 4/1211:45KEF - LHR
Nonstop3h 10mBritish Airways
Mon 8/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 4/12£187
Thu 11/1218:05KEF - LGW
Nonstop3h 10mMultiple Airlines
Sat 13/1215:20LGW - KEF
2 stops18h 05mMultiple Airlines
Deal found 3/12£190
Thu 11/1218:05KEF - STN
2 stops29h 20mMultiple Airlines
Sun 14/1206:10STN - KEF
1 stop12h 45mMultiple Airlines
Deal found 3/12£190
Thu 11/1218:05KEF - SEN
2 stops28h 10mMultiple Airlines
Sat 13/1206:30SEN - KEF
2 stops28h 05mMultiple Airlines
Deal found 2/12£193

Find flight deals from Keflavik Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to London (LON). 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 5 December 2025.

Round-trip from

£61

One-way from

£50

Popular in

July

Cheapest in

February

Average price

£148

Good round-trip deal

£56 or less

Good one-way deal

£73 or less
easyJet
  • easyJet
  • 6/3-15/3
  • Nonstop
  • 6h 15m total
  • Reykjavik to London
Search Deals
easyJet
  • easyJet
  • 21/1
  • Nonstop
  • 3h 10m total
  • Reykjavik to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Reykjavik Keflavik Intl to London (LON).
Search Deals
Price to beat on a one-way flight from Reykjavik Keflavik Intl to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Keflavik Intl to London 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 5 December 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to London that are best for you.

Fly from

Keflavik Intl

Fly to

London

Route

Depart

Return

Price

ReykjavikLondon

KEF - LTN

KEFLTN

Reykjavik Keflavik Intl

Thu 22/1

10:00-12:55

Nonstop2h 55m

London Luton

Sun 25/1

06:00-09:15

Nonstop3h 15m

£73

ReykjavikLondon

KEF - LGW

KEFLGW

Reykjavik Keflavik Intl

Wed 11/3

18:05-21:15

Nonstop3h 10m

London Gatwick

Sun 15/3

07:00-10:30

Nonstop3h 30m

£78

ReykjavikLondon

KEF - LTN

KEFLTN

Reykjavik Keflavik Intl

Mon 23/3

19:35-22:30

Nonstop2h 55m

London Luton

Wed 25/3

08:00-11:15

Nonstop3h 15m

£83

ReykjavikLondon

KEF - LTN

KEFLTN

Reykjavik Keflavik Intl

Wed 11/3

11:55-14:50

Nonstop2h 55m

London Luton

Sun 15/3

06:00-09:15

Nonstop3h 15m

£86

ReykjavikLondon

KEF - LGW

KEFLGW

Reykjavik Keflavik Intl

Fri 6/2

19:15-22:25

Nonstop3h 10m

London Gatwick

Sun 8/2

07:00-10:30

Nonstop3h 30m

£89

ReykjavikLondon

KEF - LTN

KEFLTN

Reykjavik Keflavik Intl

Fri 16/1

19:40-22:40

Nonstop3h 00m

London Luton

Mon 19/1

15:30-18:45

Nonstop3h 15m

£94

ReykjavikLondon

KEF - LGW

KEFLGW

Reykjavik Keflavik Intl

Thu 19/3

09:25-22:15

1 stop12h 50m

London Gatwick

Sun 22/3

07:00-10:30

Nonstop3h 30m

£95

ReykjavikLondon

KEF - LTN

KEFLTN

Reykjavik Keflavik Intl

Thu 22/1

09:25-21:55

1 stop12h 30m

London Luton

Wed 28/1

08:00-11:15

Nonstop3h 15m

£97

ReykjavikLondon

KEF - LTN

KEFLTN

Reykjavik Keflavik Intl

Thu 19/3

09:25-21:55

1 stop12h 30m

London Luton

Sun 22/3

06:00-09:15

Nonstop3h 15m

£105

ReykjavikLondon

KEF - LGW

KEFLGW

Reykjavik Keflavik Intl

Wed 28/1

18:05-21:15

Nonstop3h 10m

London Gatwick

Thu 29/1

13:55-17:15

Nonstop3h 20m

£106

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 60 results
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Best time to book a flight from Keflavik Intl to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Use this chart to determine the optimal time to book a return flight from Keflavik Intl to London. Price data was last updated on 28 November 2025.

The price you pay for your flight from Reykjavik Keflavik Intl Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, December is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to London (average of £42). Flying from Reykjavik Keflavik Intl Airport to London in September is currently the most expensive (average of £270). 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 LON?

Find hourly flight availability from Keflavik Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 December 2025.

When flying from Reykjavik Keflavik Intl Airport to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Reykjavik Keflavik Intl Airport to London

Explore weekly flight availability from Keflavik Intl to London. 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 5 December 2025.

The most flights from KEF to LON are scheduled on a Wednesday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

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

How often are flights from Reykjavik to London delayed?

About 11% of weekly flights between Reykjavik and London have experienced delays in the past year, with the average delay time being 118 minutes.

What is the most punctual flight time for Reykjavik to London flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Reykjavik to London flights?

Over the past year, CAA have had the lowest number of delays on this route, with just 7% of flights being delayed.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 5 December 2025.
Read reviews from past customers who have flown with Icelandair from Reykjavik Keflavik Intl Airport to London. 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
584 reviews
Check prices

Overall

7.0

Food

6.2

Boarding

7.1

Crew

8.0

Comfort

6.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.
Icelandair
7.0
Good
584 reviews
Icelandair
7.0
Good
584 reviews
Check prices

Overall

7.0

Food

6.2

Boarding

7.1

Crew

8.0

Comfort

6.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.

Related info for your journey

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

    Departing from Reykjavik Keflavik Intl Airport to London will take you 2h 55m. The distance from Reykjavik Keflavik Intl Airport to London is about 1156 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    The most popular flight routes from Reykjavik Keflavik Intl Airport to London are Reykjavik Keflavik Intl - London Stansted, Reykjavik Keflavik Intl - London Gatwick and Reykjavik Keflavik Intl - London Luton.

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

    The top 3 most reliable airlines when flying from Reykjavik Keflavik Intl Airport to London are Turkish Airlines (92%), Emirates (91%) and Icelandair (90%).

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

    Looking for the cheapest flight from Reykjavik Keflavik Intl Airport to London? While on average our users pay £486, our data indicates the cheapest price to be £70. The most popular route (Reykjavik Keflavik Intl - London Stansted), is priced around £121.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to London (average of £42). Flying from Reykjavik Keflavik Intl Airport to London in September is currently the most expensive (average of £270). 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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