Cheapest return flights from Washington to Istanbul in December from 562€

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

Return flights

31 Dec - 30 Jan Icelandair
28 Dec - 12 Jan Austrian Airlines
31 Dec - 07 Jan Icelandair
30 Dec - 18 Jan Lufthansa
28 Dec - 09 Jan SWISS
27 Dec - 10 Jan Lufthansa
31 Dec - 30 Jan Turkish Airlines direct
28 Dec - 06 Jan SWISS
30 Dec - 18 Jan Turkish Airlines direct
30 Dec - 06 Jan SWISS
28 Dec - 31 Dec TAP
28 Dec - 31 Dec Turkish Airlines direct

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

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