AirHint found the following cheapest return flights from Bristol (BRS) to Keflavik (KEF) in December 2025 (see full year).

Return flights

18 Dec - 21 Dec	easyJet	direct
02 Dec - 09 Dec	easyJet	direct
23 Dec - 30 Dec	easyJet	direct
15 Dec - 18 Dec	easyJet
21 Dec - 01 Jan	easyJet	direct
04 Dec - 07 Dec	easyJet
16 Dec - 19 Dec	easyJet
10 Dec - 14 Dec	easyJet
19 Dec - 30 Dec	easyJet
05 Dec - 07 Dec	easyJet
04 Dec - 07 Dec	easyJet	direct
29 Dec - 01 Jan	Ryanair
30 Dec - 04 Jan	easyJet
30 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Bristol to Keflavik in December.

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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Cheapest return flights from Bristol to Keflavik in December from $183

Return flights