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Cheap flights from Reykjavik Keflavik Intl Airport to Belfast Intl Airport from £126

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — BFS
25 Aug — 1 Sep1
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 26 July 2026.

Tue 8/920:05
KEF
-
BFS
2 stops26h 15m
Multiple Airlines
Tue 15/917:10
BFS
-
KEF
2 stops25h 35m
Multiple Airlines
Deal found 25/7£245
Mon 7/917:05
KEF
-
BFS
2 stops21h 30m
Multiple Airlines
Sun 13/912:20
BFS
-
KEF
2 stops20h 35m
Multiple Airlines
Deal found 23/7£290
Sun 6/923:50
KEF
-
BFS
2 stops20h 40m
Multiple Airlines
Sun 13/912:20
BFS
-
KEF
2 stops20h 35m
Multiple Airlines
Deal found 23/7£295

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 26 July 2026.

Round-trip from

£245

One-way from

£126
8/9-15/9
  • 8/9-15/9
  • 4 total stops
  • 51h 50m total
  • Reykjavik to Belfast
Search Deals
19/9
  • 19/9
  • 2 total stops
  • 36h 40m 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 26 July 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

Tue 8/9

20:05-23:20

2 stops26h 15m

Belfast Intl

Tue 15/9

17:10-17:45

2 stops25h 35m

£245

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Mon 7/9

17:05-15:35

2 stops21h 30m

Belfast Intl

Sun 13/9

12:20-07:55

2 stops20h 35m

£290
Fastest return journey

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sun 6/9

23:50-21:30

2 stops20h 40m

Belfast Intl

Sun 13/9

12:20-07:55

2 stops20h 35m

£295
Cheapest one-way

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sat 19/9

18:35-08:15

2 stops36h 40m

£126
Fastest single journey

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Sat 19/9

08:30-07:55

1 stop22h 25m

£149

ReykjavikBelfast

KEF - BFS

KEFBFS

Reykjavik Keflavik Intl

Fri 11/9

17:45-21:15

3 stops26h 30m

£157

Flights are sorted by cheapest return flights first.

Deals found on 24/7

Sorted by cheapest first

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.

  • 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.

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

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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