£79 Cheap Flights from London (LHR) to Reykjavik (KEF)

View £79 flight on Sat, 8 Nov 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Keflavik International Airport (KEF)

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Cheap Flights from London (LHR) to Reykjavik (KEF)

Prices were available within the past 7 days and start at £79 for one-way flights and £117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sat, 6 Dec - Sat, 13 Dec
LHR
London
KEF
Reykjavik
£117 Return, found 1 hour ago
£117
Return
found 1 hour ago
Select British Airways flight, departing Sat, 6 Dec from London to Reykjavik, returning Sat, 13 Dec, priced at £117 found 1 hour ago
British Airways
Thu, 30 Oct - Fri, 7 Nov
LHR
London
KEF
Reykjavik
£120 Return, just found
£120
Return
just found
Select British Airways flight, departing Thu, 30 Oct from London to Reykjavik, returning Fri, 7 Nov, priced at £120 just found
British Airways
Fri, 26 Sept - Fri, 28 Nov
LHR
London
KEF
Reykjavik
£122 Return, found 3 hours ago
£122
Return
found 3 hours ago
Select British Airways flight, departing Fri, 26 Sept from London to Reykjavik, returning Fri, 28 Nov, priced at £122 found 3 hours ago
British Airways
Wed, 24 Sept - Sat, 13 Dec
LHR
London
KEF
Reykjavik
£123 Return, found 11 hours ago
£123
Return
found 11 hours ago
Select British Airways flight, departing Wed, 24 Sept from London to Reykjavik, returning Sat, 13 Dec, priced at £123 found 11 hours ago
British Airways
Wed, 10 Dec - Fri, 19 Dec
LHR
London
KEF
Reykjavik
£124 Return, just found
£124
Return
just found
Select British Airways flight, departing Wed, 10 Dec from London to Reykjavik, returning Fri, 19 Dec, priced at £124 just found
British Airways
Thu, 20 Nov - Fri, 28 Nov
LHR
London
KEF
Reykjavik
£126 Return, just found
£126
Return
just found
Select British Airways flight, departing Thu, 20 Nov from London to Reykjavik, returning Fri, 28 Nov, priced at £126 just found
Icelandair
Fri, 14 Nov - Thu, 20 Nov
LHR
London
KEF
Reykjavik
£127 Return, just found
£127
Return
just found
Select Icelandair flight, departing Fri, 14 Nov from London to Reykjavik, returning Thu, 20 Nov, priced at £127 just found
Scandinavian Airlines
Sat, 8 Nov - Mon, 10 Nov
LHR
London
KEF
Reykjavik
£155 Return, found 1 hour ago
£155
Return
found 1 hour ago
Select Scandinavian Airlines flight, departing Sat, 8 Nov from London to Reykjavik, returning Mon, 10 Nov, priced at £155 found 1 hour ago
Swiss International Air Lines
Tue, 14 Oct - Tue, 21 Oct
LHR
London
KEF
Reykjavik
£171 Return, just found
£171
Return
just found
Select Swiss International Air Lines flight, departing Tue, 14 Oct from London to Reykjavik, returning Tue, 21 Oct, priced at £171 just found
Lufthansa
Fri, 16 Jan - Fri, 23 Jan
LHR
London
KEF
Reykjavik
£185 Return, just found
£185
Return
just found
Select Lufthansa flight, departing Fri, 16 Jan from London to Reykjavik, returning Fri, 23 Jan, priced at £185 just found

Find the cheapest month to fly from London (LHR) to Reykjavik (KEF)

January is typically the cheapest month to fly

From £96 - £193 per traveller.
Flight from London to Reykjavik route information
Origin airport
Heathrow
Destination airport
Keflavik Intl.
Airlines serving
Air Baltic, Air France, Austrian Airlines, British Airways, Eurowings, Iberia, Icelandair, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Swiss International Air Lines
Return price
£117
Distance
1885 km
Average flight time
2 hours 8 mins

Compare flights from London to Reykjavik easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Reykjavik. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Keflavik Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Keflavik Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Keflavik Intl. (KEF)

The easiest way to view the best deals on flights from London to Reykjavik today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Keflavik Intl. start at just £117 and range up to £185.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Reykjavik
  • booking your flight during December, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Reykjavik flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Keflavik Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Heathrow Airport to Keflavik Intl. Airport (KEF)?
Round-trip flights from Heathrow Airport to KEF start from £117. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from London Heathrow to Reykjavík–Keflavík Airport?
Each air carrier has its own set of terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from London Heathrow to Keflavik Intl. Airport (KEF) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Heathrow to Reykjavík–Keflavík Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport to Reykjavík–Keflavík Airport?
You'll be in the air for a while, as the flight distance between Hounslow and Reykjanesbær is 1,900 kilometres. Put together a playlist of your favourite tunes before you leave home to keep yourself entertained during your journey.
Which airlines fly direct from Heathrow Airport to KEF?
A leading airline that services the route from LHR to Keflavik Intl. Airport (KEF) is Icelandair (FI). It offers 60 flights every month. British Airways (BA) is also worth considering. It offers 30 flights every month. Between these two airlines, you'll be able to find a good deal from Hounslow to Reykjanesbær.
Are London Heathrow to KEF flight tickets cheaper when they're purchased at the last minute?
It is possible to score great last-minute deals from LHR to Reykjavík–Keflavík Airport, but it's also possible to miss out altogether! As many airlines release seats up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a bargain. Expedia compares air carrier prices and updates flight deals often, so you can be certain you're always seeing the latest offers.

Explore a world of travel with Expedia

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