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

Return flights

01 Dec - 14 Dec	Icelandair
02 Dec - 10 Dec	Icelandair
01 Dec - 05 Dec	Icelandair
02 Dec - 16 Dec	KLM
03 Dec - 12 Dec	KLM
01 Dec - 23 Dec	KLM
02 Dec - 29 Jan	KLM
03 Dec - 13 Dec	KLM
31 Dec - 09 Jan	KLM
06 Dec - 12 Dec	TAP
02 Dec - 05 Dec	Icelandair
03 Dec - 06 Dec	Air Canada
29 Dec - 14 Jan	Icelandair
29 Dec - 07 Jan	Austrian Airlines
12 Dec - 11 Jan	Icelandair
29 Dec - 24 Jan	Icelandair
28 Dec - 11 Jan	SWISS
28 Dec - 17 Jan	TAP
30 Dec - 17 Jan	TAP
13 Dec - 10 Jan	Icelandair

Also check the deals for one-way flights from Washington 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 Washington to Istanbul in December from $551

Return flights