฿5,750 Cheap Flights from Reykjavik (KEF) to London (LHR)

View ฿5,750 flight on Sat, 6 Jun 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at ฿5,750 for one-way flights and ฿23,580 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿23,580 Return, found 1 day ago
฿23,580
Return
found 1 day ago
Select Icelandair flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿23,580 found 1 day ago
Icelandair
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿23,670 Return, found 1 day ago
฿23,670
Return
found 1 day ago
Select Icelandair flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿23,670 found 1 day ago
Icelandair
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿24,145 Return, found 1 day ago
฿24,145
Return
found 1 day ago
Select Icelandair flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿24,145 found 1 day ago
Lufthansa
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿25,255 Return, found 1 day ago
฿25,255
Return
found 1 day ago
Select Lufthansa flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿25,255 found 1 day ago
Icelandair
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿25,850 Return, found 1 day ago
฿25,850
Return
found 1 day ago
Select Icelandair flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿25,850 found 1 day ago
Icelandair
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿25,940 Return, found 1 day ago
฿25,940
Return
found 1 day ago
Select Icelandair flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿25,940 found 1 day ago
Austrian Airlines
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿26,330 Return, found 1 day ago
฿26,330
Return
found 1 day ago
Select Austrian Airlines flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿26,330 found 1 day ago
Icelandair
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿26,415 Return, found 1 day ago
฿26,415
Return
found 1 day ago
Select Icelandair flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿26,415 found 1 day ago
Lufthansa
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿26,455 Return, found 1 day ago
฿26,455
Return
found 1 day ago
Select Lufthansa flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿26,455 found 1 day ago
British Airways
Wed, 27 Aug - Fri, 29 Aug
KEF
Reykjavik
LHR
London
฿28,755 Return, found 1 day ago
฿28,755
Return
found 1 day ago
Select British Airways flight, departing Wed, 27 Aug from Reykjavik to London, returning Fri, 29 Aug, priced at ฿28,755 found 1 day ago

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

March is typically the cheapest month to fly

From ฿4,968 - ฿14,614 per traveller.

Graph displaying average flight prices per month

Flight from Reykjavik to London route information
Origin airport
Keflavik Intl.
Destination airport
Heathrow
Return price
฿23,580
Distance
1885 km
Average flight time
4 hours 11 mins

Perfect flights from Reykjavik to London

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Reykjavik to London. 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 London, 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 Keflavik Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from ฿5,750 and roundtrip prices from ฿23,580. 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 Heathrow and explore London 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 KEF to LHR travel arrangements today and embark on the journey of a lifetime in London.

Frequently asked questions

How much is a flight from Keflavik Intl. Airport (KEF) to Heathrow Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from KEF to London Heathrow was ฿23,580. Fares this good don't last forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Reykjavík–Keflavík Airport to LHR?
Most flights can be cancelled online, but whether or not you incur a fee differs between airlines. If you do have to cancel your break, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Keflavik Intl. Airport (KEF) to Heathrow Airport 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 Reykjavík–Keflavík Airport to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from KEF to LHR?
It's around 1,900 kilometres from Reykjavík–Keflavík Airport to LHR, so you'll be flying for a while. Keep yourself occupied by packing things like playing cards (if you're travelling with friends) or a thrilling novel.
Which airlines fly direct from Reykjavík–Keflavík Airport to LHR?
Icelandair (FI) is one of the preferred choices for many travellers flying between Keflavik Intl. Airport (KEF) and Heathrow Airport (LHR). Take your pick of the 60 flights it offers on this route each month. After some more options? Check out the airfares with British Airways (BA). This carrier offers 30 fights monthly between these destinations.
Are Reykjavík–Keflavík Airport to LHR flight tickets cheaper when they're purchased at the last minute?
Flight prices are always on the move, so not always. While last-minute flight deals between KEF and Heathrow Airport (LHR) are possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some airlines advertise their prices up to a year before the departure date. Expedia is continuously updating the best bargains around, so keep checking back and be ready to grab your seat when the price is right.

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