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Cheap flights from Reykjavik Keflavik Intl Airport to Belfast from £145

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/7. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — BHD
13 Jun — 20 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Keflavik Intl to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from Keflavik Intl to Belfast
Explore the most affordable flight options available from Keflavik Intl to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 May 2026.

Fri 26/619:20
KEF
-
BFS
2 stops14h 25m
Multiple Airlines
Fri 3/719:20
BFS
-
KEF
1 stop13h 30m
Multiple Airlines
Deal found 12/5£261
Fri 26/619:30
KEF
-
BFS
1 stop11h 55m
easyJet
Fri 3/722:15
BFS
-
KEF
1 stop10h 35m
easyJet
Deal found 12/5£306
Sat 27/608:30
KEF
-
BFS
1 stop23h 30m
easyJet
Sat 4/715:35
BFS
-
KEF
1 stop17h 55m
easyJet
Deal found 13/5£345
Sat 27/608:30
KEF
-
BFS
1 stop7h 00m
Multiple Airlines
Sat 4/720:15
BFS
-
KEF
2 stops20h 05m
Multiple Airlines
Deal found 13/5£363
Tue 4/808:35
KEF
-
BFS
1 stop8h 15m
easyJet
Mon 10/820:35
BFS
-
KEF
1 stop12h 15m
easyJet
Deal found 10/5£368
Tue 4/819:55
KEF
-
BFS
2 stops17h 40m
Multiple Airlines
Mon 10/808:40
BFS
-
KEF
2 stops24h 10m
Multiple Airlines
Deal found 10/5£384
Tue 4/819:55
KEF
-
BHD
2 stops15h 20m
Multiple Airlines
Mon 10/809:30
BHD
-
KEF
2 stops23h 20m
Multiple Airlines
Deal found 10/5£403
Mon 6/710:10
KEF
-
BHD
1 stop4h 30m
Multiple Airlines
Mon 6/718:20
BHD
-
KEF
2 stops17h 35m
Multiple Airlines
Deal found 11/5£504
Sun 5/700:20
KEF
-
BFS
2 stops14h 35m
Multiple Airlines
Mon 6/720:55
BFS
-
KEF
2 stops27h 25m
Multiple Airlines
Deal found 12/5£536
Tue 4/810:50
KEF
-
BHD
1 stop5h 40m
British Airways
Mon 10/819:35
BHD
-
KEF
1 stop15h 20m
British Airways
Deal found 10/5£587

Find flight deals from Keflavik Intl to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 May 2026.

Round-trip from

£261

One-way from

£145
26/6-3/7
  • 26/6-3/7
  • 3 total stops
  • 27h 55m total
  • Reykjavik to Belfast
Search Deals
17/7
  • 17/7
  • 2 total stops
  • 18h 50m total
  • Reykjavik to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Keflavik Intl to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 May 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Fri 26/6

19:30-08:25

1 stop11h 55m

Belfast Intl

Fri 3/7

22:15-07:50

1 stop10h 35m

£306

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Fri 26/6

12:30-20:45

3 stops31h 15m

Belfast Intl

Fri 3/7

09:40-08:30

2 stops23h 50m

£342

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sat 27/6

08:30-09:00

1 stop23h 30m

Belfast Intl

Sat 4/7

15:35-08:30

1 stop17h 55m

£345
Fastest return journey

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Tue 4/8

08:35-17:50

1 stop8h 15m

Belfast Intl

Mon 10/8

20:35-07:50

1 stop12h 15m

£368

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sat 27/6

19:40-20:40

3 stops24h 00m

Belfast Intl

Sat 4/7

20:15-15:20

2 stops20h 05m

£381

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Tue 4/8

19:55-14:35

2 stops17h 40m

Belfast Intl

Mon 10/8

08:40-07:50

2 stops24h 10m

£384

ReykjavikBelfast

KEF - BHD

KEFBHD

Reykjavik Keflavik Intl

Tue 4/8

19:55-12:15

2 stops15h 20m

Belfast City

Mon 10/8

09:30-07:50

2 stops23h 20m

£403

ReykjavikBelfast

KEF - BHD

KEFBHD

Reykjavik Keflavik Intl

Mon 6/7

10:10-15:40

1 stop4h 30m

Belfast City

Mon 6/7

18:20-10:55

2 stops17h 35m

£504

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sun 5/7

00:20-15:55

2 stops14h 35m

Belfast Intl

Mon 6/7

20:55-23:20

2 stops27h 25m

£536

ReykjavikBelfast

KEF - BHD

KEFBHD

Reykjavik Keflavik Intl

Tue 4/8

10:50-17:30

1 stop5h 40m

Belfast City

Mon 10/8

19:35-09:55

1 stop15h 20m

£587

Flights are sorted by cheapest return flights first.

Deals found on 12/5

Showing 1-10 of 13 resultsSorted by cheapest first
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Best time to book a flight from Keflavik Intl to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Keflavik Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Reykjavik Keflavik Intl Airport to Belfast
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Reykjavik Keflavik Intl Airport to Belfast?

    There are many flights that can get you from Reykjavik Keflavik Intl Airport to Belfast in 5h 40m. Fly via easyJet or British Airways to get the fastest option. The distance between Reykjavik Keflavik Intl Airport and Belfast is about 870 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Keflavik Intl to Belfast that include hotel bookings?

    Yes. In addition to deals on Keflavik Intl to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Keflavik Intl to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Keflavik Intl to Belfast.

  • Can I find deals for business class flights from Keflavik Intl to Belfast?

    Yes. Cheapflights offers flight deals from Keflavik Intl to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Keflavik Intl to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Keflavik Intl to Belfast Intl flights
Keflavik Intl to Belfast City flights

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How does Cheapflights help users find flights from Keflavik Intl to Belfast?

Cheapflights makes it easy to find Keflavik Intl to Belfast flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Keflavik Intl to Belfast?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Keflavik Intl to Belfast.

Can Cheapflights find flights from Keflavik Intl to Belfast with no change fees?

Need flexible booking options for your flight to Belfast from Keflavik Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Keflavik Intl to Belfast become cheaper?

Not ready to book yet? You can track prices for flights from Keflavik Intl to Belfast on Cheapflights with our Price Alert feature and get notified when better prices are available.

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