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

Return flights

01 Dec - 08 Dec	airBaltic	direct
05 Dec - 12 Dec	airBaltic	direct
31 Dec - 21 Jan	airBaltic	direct
12 Dec - 15 Dec	airBaltic	direct
15 Dec - 19 Dec	airBaltic	direct
12 Dec - 14 Dec	airBaltic	direct
01 Dec - 04 Dec	airBaltic
21 Dec - 24 Dec	airBaltic	direct
21 Dec - 28 Dec	airBaltic	direct
11 Dec - 14 Dec	Ryanair
26 Dec - 28 Dec	airBaltic	direct
26 Dec - 04 Jan	airBaltic	direct
19 Dec - 04 Jan	airBaltic	direct

Also check the deals for one-way flights from Riga to Istanbul 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 Riga to Istanbul in December from 154€

Return flights