Cheapest return flights from Boston to Istanbul in December from $378

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

Return flights

06 Dec - 15 Dec Icelandair
03 Dec - 08 Dec Icelandair
27 Dec - 16 Jan Icelandair
03 Dec - 10 Dec Brussels Airlines
27 Dec - 19 Jan Icelandair
02 Dec - 07 Dec Aer Lingus
30 Dec - 16 Jan Delta
02 Dec - 09 Dec Austrian Airlines
10 Dec - 24 Dec Air Canada
09 Dec - 14 Dec TAP
03 Dec - 14 Dec Aer Lingus
01 Dec - 15 Dec Lufthansa
02 Dec - 09 Dec Turkish Airlines direct
29 Dec - 16 Jan KLM
29 Dec - 12 Jan KLM
24 Dec - 14 Jan Air Canada
24 Dec - 16 Jan Air Canada
29 Dec - 16 Jan Turkish Airlines direct
13 Dec - 23 Jan Icelandair
12 Dec - 08 Jan Air France

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

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