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Cheap flights from Reykjavik Keflavik Intl Airport to Belfast Intl Airport from £97

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — BFS
23 May — 30 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Keflavik Intl to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Keflavik Intl to Belfast Intl
Explore the most affordable flight options available from Keflavik Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 April 2026.

Fri 15/509:05
KEF
-
BFS
2 stops12h 55m
Multiple Airlines
Wed 20/515:40
BFS
-
KEF
2 stops17h 40m
Multiple Airlines
Deal found 22/4£184
Sun 10/519:00
KEF
-
BFS
2 stops16h 20m
Multiple Airlines
Wed 20/509:55
BFS
-
KEF
1 stop23h 25m
Multiple Airlines
Deal found 22/4£198
Sat 16/519:00
KEF
-
BFS
2 stops15h 55m
Multiple Airlines
Wed 20/507:30
BFS
-
KEF
2 stops25h 50m
Multiple Airlines
Deal found 22/4£200
Fri 15/509:05
KEF
-
BFS
2 stops12h 55m
Multiple Airlines
Mon 18/514:40
BFS
-
KEF
1 stop10h 30m
Multiple Airlines
Deal found 22/4£217
Fri 15/509:05
KEF
-
BFS
2 stops12h 55m
Multiple Airlines
Sat 16/521:40
BFS
-
KEF
1 stop11h 35m
Multiple Airlines
Deal found 22/4£218
Sun 10/519:00
KEF
-
BFS
2 stops16h 20m
Multiple Airlines
Mon 18/514:40
BFS
-
KEF
1 stop10h 30m
Multiple Airlines
Deal found 22/4£218
Sun 10/519:00
KEF
-
BFS
2 stops16h 20m
Multiple Airlines
Sat 16/521:40
BFS
-
KEF
1 stop11h 35m
Multiple Airlines
Deal found 22/4£219
Mon 11/517:25
KEF
-
BFS
2 stops17h 50m
Multiple Airlines
Mon 18/514:40
BFS
-
KEF
1 stop10h 30m
Multiple Airlines
Deal found 22/4£221
Mon 11/517:25
KEF
-
BFS
2 stops17h 50m
Multiple Airlines
Sat 16/521:40
BFS
-
KEF
1 stop11h 35m
Multiple Airlines
Deal found 22/4£221
Fri 15/509:05
KEF
-
BFS
2 stops12h 55m
Multiple Airlines
Tue 19/523:30
BFS
-
KEF
1 stop9h 10m
Multiple Airlines
Deal found 22/4£224

Find flight deals from Keflavik Intl to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Belfast Intl (BFS). 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 23 April 2026.

Round-trip from

£184

One-way from

£97
15/5-20/5
  • 15/5-20/5
  • 4 total stops
  • 30h 35m total
  • Reykjavik to Belfast
Search Deals
15/5
  • 15/5
  • 2 total stops
  • 35h 10m total
  • Reykjavik to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Keflavik Intl to Belfast Intl 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 23 April 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Fri 15/5

09:05-23:00

2 stops12h 55m

Belfast Intl

Wed 20/5

15:40-08:20

2 stops17h 40m

£184

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Thu 14/5

08:45-15:20

1 stop5h 35m

Belfast Intl

Wed 20/5

15:40-08:20

2 stops17h 40m

£279

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sat 16/5

08:30-07:55

1 stop22h 25m

Belfast Intl

Wed 20/5

21:50-08:05

1 stop11h 15m

£292

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Wed 8/7

08:20-20:35

1 stop11h 15m

Belfast Intl

Mon 13/7

20:35-07:50

1 stop12h 15m

£314
Fastest return journey

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Thu 14/5

10:10-17:05

1 stop5h 55m

Belfast Intl

Sun 17/5

08:35-15:45

1 stop8h 10m

£779
Cheapest one-way

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Fri 15/5

09:05-21:15

2 stops35h 10m

£97
Fastest single journey

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Wed 13/5

08:20-22:45

1 stop13h 25m

£115

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sat 30/5

08:30-07:55

1 stop22h 25m

£115

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sun 17/5

19:35-12:15

2 stops39h 40m

£119

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sat 16/5

08:30-07:55

1 stop22h 25m

£119

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 11 resultsSorted by cheapest first
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2

Best time to book a flight from Keflavik Intl to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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.

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to Belfast Intl. 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 Intl Airport?

    Airlines like easyJet fly from Reykjavik Keflavik Intl Airport to Belfast Intl Airport in about 22h 25m. The time it takes to get you to your destination can typically vary by up to . The distance from Reykjavik Keflavik Intl Airport to Belfast Intl Airport is about 860 mi.

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

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

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

    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 Intl.

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

    Yes. Cheapflights offers flight deals from Keflavik Intl to Belfast Intl 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

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Keflavik Intl to Belfast Intl

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

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast Intl from Keflavik Intl today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Keflavik Intl to Belfast Intl for you. Better yet — we are completely free to use.

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

Yes! Cheapflights helps users easily find flights from Keflavik Intl to Belfast Intl with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from Keflavik Intl today and book when prices fit your budget.

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