AirHint found the following cheapest return flights from Washington (IAD) to Istanbul (IST) in January 2026 (see full year).

Return flights

01 Jan - 24 Jan	Lufthansa
22 Jan - 05 Feb	Lufthansa
10 Jan - 31 Jan	Lufthansa
13 Jan - 23 Jan	Lufthansa
25 Jan - 14 Feb	Lufthansa
07 Jan - 14 Jan	Delta
19 Jan - 02 Feb	Delta
01 Jan - 19 Jan	Lufthansa
12 Jan - 19 Jan	KLM
15 Jan - 22 Jan	KLM
01 Jan - 20 Jan	Lufthansa
13 Jan - 20 Jan	KLM
12 Jan - 26 Jan	KLM
17 Jan - 07 Feb	KLM
28 Jan - 03 Feb	Icelandair
05 Jan - 10 Feb	Turkish Airlines	direct
17 Jan - 07 Feb	Turkish Airlines	direct
25 Jan - 14 Feb	Turkish Airlines	direct
19 Jan - 02 Feb	Turkish Airlines	direct
22 Jan - 05 Feb	Turkish Airlines	direct

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

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 January from 446€

Return flights