Cheapest return flights from Boston to Istanbul in December from 737€

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

Return flights

28 Dec - 15 Jan SWISS
31 Dec - 10 Jan Icelandair
29 Dec - 11 Jan Lufthansa
28 Dec - 11 Jan SWISS
31 Dec - 07 Jan Icelandair
28 Dec - 06 Jan SWISS
31 Dec - 07 Jan Turkish Airlines direct
31 Dec - 10 Jan Turkish Airlines direct
30 Dec - 04 Jan Lufthansa
29 Dec - 04 Jan Icelandair
23 Dec - 30 Dec Turkish Airlines direct

Also check the deals for one-way flights from Boston to Istanbul in December.

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