Cheapest one-way flights from Belfast to Keflavik in December from $85

AirHint found the following cheapest one-way flights from Belfast (BFS) to Keflavik (KEF) in December 2025 (see full year).

One-Way flights

06 Dec easyJet
03 Dec easyJet
05 Dec easyJet
26 Dec easyJet
03 Dec Jet2 direct

Also check the deals for return flights from Belfast to Keflavik in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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