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

Return flights

06 Dec - 13 Dec	easyJet
09 Dec - 13 Dec	easyJet
09 Dec - 09 Jan	easyJet
06 Dec - 06 Jan	Wizz Air
06 Dec - 09 Dec	easyJet
06 Dec - 10 Dec	easyJet
13 Dec - 17 Jan	Finnair
13 Dec - 13 Jan	Finnair
17 Dec - 08 Jan	Finnair
27 Dec - 06 Jan	Finnair
27 Dec - 30 Dec	Finnair
29 Dec - 03 Jan	Finnair
21 Dec - 05 Jan	transavia
20 Dec - 05 Jan	Transavia France
23 Dec - 03 Jan	Finnair
06 Dec - 13 Dec	airBaltic	direct
09 Dec - 13 Dec	airBaltic	direct
27 Dec - 30 Dec	airBaltic	direct
06 Dec - 09 Dec	airBaltic	direct

Also check the deals for one-way flights from Keflavik to Riga 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 Keflavik to Riga in December from $244

Return flights