฿3,845 Cheap Flights from London (LHR) to Reykjavik (KEF)

View ฿3,845 flight on Sat, 28 Feb 2026Opens in a new window

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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ฿3,845 for one-way flights and ฿6,635 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Sat, 17 Jan - Fri, 23 Jan
LHR
London
KEF
Reykjavik
฿6,635 Return, found 2 days ago
฿6,635
Return
found 2 days ago
Select Icelandair flight, departing Sat, 17 Jan from London to Reykjavik, returning Fri, 23 Jan, priced at ฿6,635 found 2 days ago
British Airways
Sat, 17 Jan - Fri, 23 Jan
LHR
London
KEF
Reykjavik
฿7,040 Return, found 2 days ago
฿7,040
Return
found 2 days ago
Select British Airways flight, departing Sat, 17 Jan from London to Reykjavik, returning Fri, 23 Jan, priced at ฿7,040 found 2 days ago
British Airways
Fri, 16 Jan - Fri, 23 Jan
LHR
London
KEF
Reykjavik
฿7,170 Return, found 1 day ago
฿7,170
Return
found 1 day ago
Select British Airways flight, departing Fri, 16 Jan from London to Reykjavik, returning Fri, 23 Jan, priced at ฿7,170 found 1 day ago
Icelandair
Fri, 16 Jan - Fri, 23 Jan
LHR
London
KEF
Reykjavik
฿7,185 Return, found 1 day ago
฿7,185
Return
found 1 day ago
Select Icelandair flight, departing Fri, 16 Jan from London to Reykjavik, returning Fri, 23 Jan, priced at ฿7,185 found 1 day ago
British Airways
Sat, 17 Jan - Sat, 24 Jan
LHR
London
KEF
Reykjavik
฿7,305 Return, found 6 days ago
฿7,305
Return
found 6 days ago
Select British Airways flight, departing Sat, 17 Jan from London to Reykjavik, returning Sat, 24 Jan, priced at ฿7,305 found 6 days ago
Icelandair
Mon, 19 Jan - Fri, 23 Jan
LHR
London
KEF
Reykjavik
฿7,475 Return, found 4 days ago
฿7,475
Return
found 4 days ago
Select Icelandair flight, departing Mon, 19 Jan from London to Reykjavik, returning Fri, 23 Jan, priced at ฿7,475 found 4 days ago
Icelandair
Wed, 28 Jan - Sun, 1 Feb
LHR
London
KEF
Reykjavik
฿7,615 Return, found 1 day ago
฿7,615
Return
found 1 day ago
Select Icelandair flight, departing Wed, 28 Jan from London to Reykjavik, returning Sun, 1 Feb, priced at ฿7,615 found 1 day ago
KLM
Sat, 11 Apr - Thu, 16 Apr
LHR
London
KEF
Reykjavik
฿9,870 Return, found 1 day ago
฿9,870
Return
found 1 day ago
Select KLM flight, departing Sat, 11 Apr from London to Reykjavik, returning Thu, 16 Apr, priced at ฿9,870 found 1 day ago
Swiss International Air Lines
Sat, 17 Jan - Sat, 24 Jan
LHR
London
KEF
Reykjavik
฿9,920 Return, found 6 days ago
฿9,920
Return
found 6 days ago
Select Swiss International Air Lines flight, departing Sat, 17 Jan from London to Reykjavik, returning Sat, 24 Jan, priced at ฿9,920 found 6 days ago
Lufthansa
Fri, 16 Jan - Fri, 23 Jan
LHR
London
KEF
Reykjavik
฿12,895 Return, found 1 day ago
฿12,895
Return
found 1 day ago
Select Lufthansa flight, departing Fri, 16 Jan from London to Reykjavik, returning Fri, 23 Jan, priced at ฿12,895 found 1 day ago

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

January is typically the cheapest month to fly

From ฿4,291 - ฿10,344 per traveller.
Flight from London to Reykjavik route information
Origin airport
Heathrow
Destination airport
Keflavik Intl.
Airlines serving
Air France, British Airways, Icelandair, KLM, Lufthansa, Swiss International Air Lines
Return price
฿6,635
Distance
1885 km
Average flight time
3 hours 20 mins

Perfect flights from London to Reykjavik

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Reykjavik. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to Keflavik Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿3,845 and roundtrip prices from ฿6,635. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Keflavik Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Reykjavik.

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 ฿6,635. 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.
*Available to Expedia members.