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Cheap flights from London to Reykjavik Keflavik Intl Airport from £134

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KEF
10 Sep — 17 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Reykjavik Keflavik Intl are usually found in January or November, booked 90 days in advance, depart on a Sunday or Monday and return on a Sunday

Cheap flight deals from London to Keflavik Intl

Enter your travel dates to find the best prices.

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 11 August 2026.

Tue 27/1019:50 -
1 stop14h 55m
Thu 29/1018:05 -
1 stop27h 35m
Deal found 6/8£204
Thu 17/908:30 -
1 stop9h 20m
Sun 20/919:35 -
2 stops24h 05m
Deal found 7/8£204
Thu 3/1210:10 -
Nonstop3h 25m
Sun 6/1211:30 -
1 stop11h 20m
Deal found 7/8£204
Fri 4/907:15 -
1 stop11h 40m
Fri 11/917:45 -
3 stops30h 05m
Deal found 7/8£204
Thu 26/1107:45 -
1 stop6h 00m
Fri 4/1214:45 -
1 stop17h 25m
Deal found 9/8£204
Sun 1/1107:20 -
Nonstop3h 20m
Tue 3/1111:50 -
Nonstop3h 10m
Deal found 10/8£205
Sat 12/908:30 -
1 stop11h 10m
Tue 22/919:55 -
2 stops26h 50m
Deal found 9/8£205
Sat 7/1116:45 -
2 stops18h 30m
Mon 9/1110:30 -
1 stop8h 45m
Deal found 9/8£205
Tue 8/919:05 -
2 stops25h 10m
Sat 12/919:55 -
2 stops18h 05m
Deal found 9/8£205
Tue 3/1107:35 -
Nonstop3h 20m
Fri 6/1118:10 -
Nonstop3h 00m
Deal found 8/8£206
Sun 11/1017:05 -
2 stops15h 50m
Fri 16/1018:55 -
1 stop11h 50m
Deal found 10/8£206
Sat 26/910:15 -
2 stops23h 00m
Mon 5/1018:40 -
Nonstop3h 15m
Deal found 7/8£206

Find 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 11 August 2026.

Round-trip from

£204

One-way from

£134

Popular in

July

Cheapest in

January

Average price

£331

Good round-trip deal

£103 or less

Good one-way deal

£105 or less
17/9-20/9
  • 17/9-20/9
  • 3 total stops
  • 33h 25m total
  • London to Reykjavik
Search Deals
19/9
  • 19/9
  • 1 total stop
  • 10h 20m total
  • London to Reykjavik
Search Deals
Highest demand for flights based on searches. 34% potential increase in price (£77 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from London (LON) to Reykjavik Keflavik Intl.
Search Deals

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 11 August 2026.
Use the filters below to find and compare flights from London to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonReykjavik

LTN London Luton - KEF Reykjavik Keflavik Intl

LTNKEF

London Luton

Sat 26/12

07:00-10:15

Nonstop3h 15m

Reykjavik Keflavik Intl

Sat 2/1

10:55-13:55

Nonstop3h 00m

£204

LondonReykjavik

LCY London City - KEF Reykjavik Keflavik Intl

LCYKEF

London City

Mon 7/12

07:45-13:45

1 stop6h 00m

Reykjavik Keflavik Intl

Fri 11/12

14:45-08:10

1 stop17h 25m

£204

LondonReykjavik

LTN London Luton - KEF Reykjavik Keflavik Intl

LTNKEF

London Luton

Wed 23/12

13:00-16:15

Nonstop3h 15m

Reykjavik Keflavik Intl

Sun 3/1

10:05-13:05

Nonstop3h 00m

£205

LondonReykjavik

STN London Stansted - KEF Reykjavik Keflavik Intl

STNKEF

London Stansted

Thu 1/10

07:20-18:55

2 stops12h 35m

Reykjavik Keflavik Intl

Mon 5/10

08:35-21:25

2 stops11h 50m

£207

LondonReykjavik

STN London Stansted - KEF Reykjavik Keflavik Intl

STNKEF

London Stansted

Mon 28/9

08:25-16:45

1 stop9h 20m

Reykjavik Keflavik Intl

Sat 3/10

08:30-16:15

1 stop6h 45m

£207

LondonReykjavik

LTN London Luton - KEF Reykjavik Keflavik Intl

LTNKEF

London Luton

Thu 24/12

08:00-17:45

1 stop9h 45m

Reykjavik Keflavik Intl

Sat 26/12

10:55-13:55

Nonstop3h 00m

£209

LondonReykjavik

STN London Stansted - KEF Reykjavik Keflavik Intl

STNKEF

London Stansted

Thu 15/10

17:55-15:30

2 stops22h 35m

Reykjavik Keflavik Intl

Sun 18/10

08:55-07:40

2 stops21h 45m

£209

LondonReykjavik

STN London Stansted - KEF Reykjavik Keflavik Intl

STNKEF

London Stansted

Fri 18/9

21:45-18:10

2 stops21h 25m

Reykjavik Keflavik Intl

Sun 20/9

19:35-19:55

2 stops23h 20m

£210

LondonReykjavik

LGW London Gatwick - KEF Reykjavik Keflavik Intl

LGWKEF

London Gatwick

Sat 24/10

08:00-23:35

1 stop16h 35m

Reykjavik Keflavik Intl

Tue 27/10

20:25-11:20

1 stop14h 55m

£210

LondonReykjavik

LHR London Heathrow - KEF Reykjavik Keflavik Intl

LHRKEF

London Heathrow

Sun 1/11

20:35-23:50

Nonstop3h 15m

Reykjavik Keflavik Intl

Thu 5/11

16:20-19:30

Nonstop3h 10m

£211

Flights are sorted by cheapest return flights first.

Deals found on 11/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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 £101). Flying from London to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £344). 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 11 August 2026.

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 24% on your trip compared to booking 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 11 August 2026.

The most flights from LON to KEF are scheduled on a Sunday (24 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (14 on average).

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

Airfare is below average for this route at the moment.
London to Reykjavik Keflavik Intl Airport flights typically cost between £247 and £397 in September.
The cheapest return price found within the last 5 days was £204 on Multiple Airlines (17 Sept–20 Sept).

How often are flights from London to Reykjavik delayed?

About 11% of weekly flights between London and Reykjavik have experienced delays in the past year, with the average delay time being 112 minutes.

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

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

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

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

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

Over the past year, British Airways have had the lowest number of delays on this route, with just 9% of flights being delayed.

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

The best time to book flights from London to Reykjavik Keflavik Intl Airport is 90 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 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 8 August 2026.

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

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 11 August 2026.
Get a feel of what it's like to fly with Scandinavian Airlines,Icelandair, andeasyJet from London to Reykjavik Keflavik Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,941 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Comfort

7.3

Entertainment

6.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Ray,Jul 2026

ARN - CPH

Premium economy has good and bad seats, some have a seat support between your feet. Auction process for upgrades is very bad.... I won the bid, and was not given a seat.
Scandinavian Airlines
7.4
Good
1,941 reviews
Scandinavian Airlines
7.4
Good
1,941 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Comfort

7.3

Entertainment

6.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Ray,Jul 2026

ARN - CPH

Premium economy has good and bad seats, some have a seat support between your feet. Auction process for upgrades is very bad.... I won the bid, and was not given a seat.
Icelandair
6.9
Okay
728 reviews
Scandinavian Airlines
7.4
Good
1,941 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Comfort

7.3

Entertainment

6.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Ray,Jul 2026

ARN - CPH

Premium economy has good and bad seats, some have a seat support between your feet. Auction process for upgrades is very bad.... I won the bid, and was not given a seat.
easyJet
6.9
Okay
1,923 reviews
Scandinavian Airlines
7.4
Good
1,941 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Comfort

7.3

Entertainment

6.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Ray,Jul 2026

ARN - CPH

Premium economy has good and bad seats, some have a seat support between your feet. Auction process for upgrades is very bad.... I won the bid, and was not given a seat.
British Airways
6.7
Okay
8,159 reviews
Scandinavian Airlines
7.4
Good
1,941 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Comfort

7.3

Entertainment

6.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Ray,Jul 2026

ARN - CPH

Premium economy has good and bad seats, some have a seat support between your feet. Auction process for upgrades is very bad.... I won the bid, and was not given a seat.

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?

    A quick flight from London to Reykjavik Keflavik Intl Airport can take about 3h 15m. easyJet provides one of the quickest options available for as low as £204. The distance from London to Reykjavik Keflavik Intl Airport is about 1156 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from London to Reykjavik Keflavik Intl Airport round-trip?

    Currently priced at £54, easyJet will fly you from London to Reykjavik Keflavik Intl Airport and back. In addition to easyJet, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and British Airways - these airlines can fly you to your destination from £119 and £131, respectively. You may be able to fly from London to Reykjavik Keflavik Intl Airport for 73% less than the average price by searching for these airlines.

  • 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 Luton - 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 Icelandair (85%), Emirates (85%) or Air India (85%) 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 £145. On average you can expect to pay £737. The most popular route, (London Heathrow - Reykjavik Keflavik Intl), can usually be booked for £110.

  • 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 £101). Flying from London to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £344). 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
Kopavogur
Keflavik
Hveragerdi

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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 11 August 2026.
easyJet flights from London to Reykjavik Keflavik Intl

Top 4 airlines flying from London to Keflavik Intl

Discover the top 4 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 11 August 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£54Average£116FlexibilityNo cancel feeOn-time86%
Search easyJet flights
IcelandairCheapest£119Average£255FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£131Average£231FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£167Average£345FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines 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?

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.

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

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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