$163 Cheap Flights from Reykjavik (KEF) to Belfast (BFS)

View $163 flight on Tue, Nov 4, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Reykjavik to Belfast (KEF-BFS)

Prices were available within the past 7 days and start at $163 for one-way flights and $445 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sun, May 4 - Thu, May 8
KEF
Reykjavik
BHD
Belfast
$445 Roundtrip, found 5 days ago
$445
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, May 4 from Reykjavik to Belfast, returning Thu, May 8, priced at $445 found 5 days ago
British Airways
Sun, May 4 - Thu, May 8
KEF
Reykjavik
BHD
Belfast
$465 Roundtrip, found 5 days ago
$465
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, May 4 from Reykjavik to Belfast, returning Thu, May 8, priced at $465 found 5 days ago
British Airways
Fri, May 23 - Thu, May 29
KEF
Reykjavik
BHD
Belfast
$540 Roundtrip, found 1 day ago
$540
Roundtrip
found 1 day ago
Select British Airways flight, departing Fri, May 23 from Reykjavik to Belfast, returning Thu, May 29, priced at $540 found 1 day ago
British Airways
Fri, May 23 - Thu, May 29
KEF
Reykjavik
BHD
Belfast
$554 Roundtrip, found 1 day ago
$554
Roundtrip
found 1 day ago
Select British Airways flight, departing Fri, May 23 from Reykjavik to Belfast, returning Thu, May 29, priced at $554 found 1 day ago
British Airways
Mon, Aug 11 - Sat, Aug 16
KEF
Reykjavik
BHD
Belfast
$567 Roundtrip, found 1 day ago
$567
Roundtrip
found 1 day ago
Select British Airways flight, departing Mon, Aug 11 from Reykjavik to Belfast, returning Sat, Aug 16, priced at $567 found 1 day ago
British Airways
Mon, Aug 11 - Sat, Aug 16
KEF
Reykjavik
BHD
Belfast
$572 Roundtrip, found 1 day ago
$572
Roundtrip
found 1 day ago
Select British Airways flight, departing Mon, Aug 11 from Reykjavik to Belfast, returning Sat, Aug 16, priced at $572 found 1 day ago
British Airways
Thu, Jun 26 - Thu, Jul 10
KEF
Reykjavik
BHD
Belfast
$633 Roundtrip, found 4 days ago
$633
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Jun 26 from Reykjavik to Belfast, returning Thu, Jul 10, priced at $633 found 4 days ago
British Airways
Mon, Aug 11 - Sat, Aug 16
KEF
Reykjavik
BHD
Belfast
$635 Roundtrip, found 1 day ago
$635
Roundtrip
found 1 day ago
Select British Airways flight, departing Mon, Aug 11 from Reykjavik to Belfast, returning Sat, Aug 16, priced at $635 found 1 day ago
British Airways
Thu, Jun 26 - Thu, Jul 10
KEF
Reykjavik
BHD
Belfast
$638 Roundtrip, found 4 days ago
$638
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Jun 26 from Reykjavik to Belfast, returning Thu, Jul 10, priced at $638 found 4 days ago
KLM
Sun, Jul 13 - Sun, Jul 20
KEF
Reykjavik
BHD
Belfast
$1,387 Roundtrip, found 8 hours ago
$1,387
Roundtrip
found 8 hours ago
Select KLM flight, departing Sun, Jul 13 from Reykjavik to Belfast, returning Sun, Jul 20, priced at $1,387 found 8 hours ago
Flights from Reykjavik (KEF) to Belfast (BHD)
Origin airport
Keflavik Intl.
Destination airport
George Best Belfast City
Roundtrip price
$445
Distance
871 mi

Reykjavik to Belfast Flights

The cheapest times to fly from Reykjavik to Belfast

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 Belfast are during the month of May. You can find some of the cheapest flights from Reykjavik to Belfast with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Reykjavik to Belfast

Sunday is one of the best days to book for cheap flights from Reykjavik to Belfast: 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 Belfast

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 Belfast in 2025. You can also book with separate airlines for your outbound and return journeys, from $163 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 Belfast 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 Belfast 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 Belfast Intl. Airport (BFS) cost?
Discover the latest flight deals from KEF to BFS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from KEF to BFS?
The cheapest flights from KEF to BFS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from KEF to BFS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from KEF to BFS. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Keflavik Intl. Airport (KEF) to Belfast Intl. Airport (BFS)?
You’ll need to book a flight with a layover if you’re traveling from Keflavik Intl. Airport (KEF) to Belfast Intl. Airport (BFS). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from KEF to BFS?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on a range of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Keflavik Intl. Airport (KEF) to Belfast Intl. Airport (BFS)?
To avoid possible delays on the Keflavik Intl. Airport (KEF) to Belfast Intl. Airport (BFS) route, aim to travel before 3 PM. Later flights have a 22% higher chance of being 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.
Is it cheaper to buy a plane ticket from Keflavik Intl. Airport (KEF) to Belfast Intl. Airport (BFS) last-minute?
Last-minute fares from KEF to BFS are usually more expensive. For the best rates, start searching for flights as early as possible. That being said, if you’re flexible with your travel dates, you may find a cheap fare right before you leave.
Is it cheaper to book a KEF to BFS flight and hotel package?
Compared with arranging hotels and flights separately, booking a KEF to BFS flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place will take the hassle out of travel planning. Just pick your flights and choose from our extensive range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Keflavik Intl. Airport (KEF) to Belfast Intl. Airport (BFS)?
In most cases, you’re able to cancel or reschedule your KEF to BFS flight. However, there may be additional charges, especially if you booked over 24 hours ago. Double-check your itinerary for the airline’s guidelines and fees on flight changes, or if you want further details, head to our Customer Service portal.

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*Available to One Key members.