$67 Cheap Flights from Reykjavik (KEF) to London (LHR)

View $67 flight on Fri, Feb 6, 2026Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Reykjavik to London (KEF-LHR)

Prices were available within the past 7 days and start at $67 for one-way flights and $191 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sat, Nov 15 - Sat, Nov 22
KEF
Reykjavik
LHR
London
$191 Roundtrip, found 3 days ago
$191
Roundtrip
found 3 days ago
Select British Airways flight, departing Sat, Nov 15 from Reykjavik to London, returning Sat, Nov 22, priced at $191 found 3 days ago
British Airways
Sun, Apr 27 - Sun, May 4
KEF
Reykjavik
LHR
London
$197 Roundtrip, found 2 days ago
$197
Roundtrip
found 2 days ago
Select British Airways flight, departing Sun, Apr 27 from Reykjavik to London, returning Sun, May 4, priced at $197 found 2 days ago
British Airways
Sat, May 3 - Sun, May 4
KEF
Reykjavik
LHR
London
$203 Roundtrip, found 4 days ago
$203
Roundtrip
found 4 days ago
Select British Airways flight, departing Sat, May 3 from Reykjavik to London, returning Sun, May 4, priced at $203 found 4 days ago
British Airways
Thu, May 1 - Wed, May 7
KEF
Reykjavik
LHR
London
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select British Airways flight, departing Thu, May 1 from Reykjavik to London, returning Wed, May 7, priced at $204 found 2 days ago
British Airways
Sat, May 10 - Sun, May 11
KEF
Reykjavik
LHR
London
$210 Roundtrip, found 1 day ago
$210
Roundtrip
found 1 day ago
Select British Airways flight, departing Sat, May 10 from Reykjavik to London, returning Sun, May 11, priced at $210 found 1 day ago
British Airways
Thu, May 8 - Sun, May 11
KEF
Reykjavik
LHR
London
$211 Roundtrip, found 1 day ago
$211
Roundtrip
found 1 day ago
Select British Airways flight, departing Thu, May 8 from Reykjavik to London, returning Sun, May 11, priced at $211 found 1 day ago
Scandinavian Airlines
Thu, Mar 5 - Mon, Mar 9
KEF
Reykjavik
LHR
London
$217 Roundtrip, found 6 days ago
$217
Roundtrip
found 6 days ago
Select Scandinavian Airlines flight, departing Thu, Mar 5 from Reykjavik to London, returning Mon, Mar 9, priced at $217 found 6 days ago
Lufthansa
Sun, May 4 - Thu, May 8
KEF
Reykjavik
LHR
London
$245 Roundtrip, found 6 days ago
$245
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Sun, May 4 from Reykjavik to London, returning Thu, May 8, priced at $245 found 6 days ago
Austrian Airlines
Wed, Oct 15 - Sat, Oct 18
KEF
Reykjavik
LHR
London
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Wed, Oct 15 from Reykjavik to London, returning Sat, Oct 18, priced at $278 found 1 day ago
Swiss International Air Lines
Thu, Jun 5 - Mon, Jun 9
KEF
Reykjavik
LHR
London
$291 Roundtrip, found 1 day ago
$291
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, Jun 5 from Reykjavik to London, returning Mon, Jun 9, priced at $291 found 1 day ago
Flights from Reykjavik (KEF) to London (LHR)
Origin airport
Keflavik Intl.
Destination airport
Heathrow
Airlines serving
Air Baltic, Air France, Austrian Airlines, British Airways, Eurowings, Icelandair, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Swiss International Air Lines
Roundtrip price
$190
Distance
1178 mi

Reykjavik to London Flights

The cheapest times to fly from Reykjavik to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Reykjavik to London are during the month of November. You can find some of the cheapest flights from Reykjavik to London with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Reykjavik to London

Sunday is one of the best days to book for cheap flights from Reykjavik to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Reykjavik to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Reykjavik to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $67 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Reykjavik to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Reykjavik to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR) cost?
Cheap round-trip flights from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR) start at $195. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a British Airways flight leaving KEF on May 16 2025 and touching down at LHR. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from KEF to LHR?
The cheapest flights from KEF to LHR are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR)?
You can fly directly from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR) on an Icelandair flight.
What is the cheapest airline that flies from KEF to LHR?
With tickets starting at $102 for a one-way flight from KEF to LHR, British Airways is currently the cheapest airline on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from KEF on May 2 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR)?
Each day, an average of 3 direct flights operate from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR). Pick the departure time that fits your schedule best.
What are the most popular departure times for flights from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR)?
The 7 AM departures from KEF to LHR are the busiest. Greater demand means you’ll likely pay more for these departures. If you’re looking to save, book during off-peak hours.
What day of the week has the most flights from KEF to LHR?
Travel on a Friday if you’re searching for the best choice of flights from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR).
What is the earliest flight from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR)?
Take the earliest flight at around 7:35AM UTC+0, heading out of Keflavik Intl. Airport (KEF). You’ll be flying for about 3h 15m, coming in to land at Heathrow Airport (LHR) at approximately 10:50AM UTC+0.
How long does it take to fly from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR)?
The average flight duration from KEF to LHR is 3 hours and 12 minutes, covering a distance of 1,200 mi.
What is the best time to fly from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR)?
To avoid potential delays on the Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR) route, aim to fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for London from Keflavik Intl. Airport (KEF)?
Touch down at one of these London airports following your direct flight from Keflavik Intl. Airport (KEF):

  • Heathrow Airport (LHR)
  • Gatwick Airport (LGW)
  • Stansted Airport (STN)

Is it cheaper to buy a plane ticket from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR) last-minute?
Last-minute bookings from KEF to LHR are generally more expensive. For the lowest rates, start searching for flights early. That being said, if you’re flexible with your travel plans, you may score a cheap fare just before your departure.
Is it cheaper to book a KEF to LHR flight and hotel package?
You’ll typically save money by booking a KEF to LHR flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one convenient place. Once you’ve chosen your ideal flights and accommodations, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from Keflavik Intl. Airport (KEF) to Heathrow Airport (LHR)?
Generally, it’s possible to reschedule or cancel your KEF to LHR flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.