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

Return flights

13 Jan - 21 Jan	British Airways
12 Jan - 04 Feb	KLM
17 Jan - 25 Jan	KLM
10 Jan - 17 Jan	KLM
28 Jan - 31 Jan	KLM
11 Jan - 15 Jan	KLM
22 Jan - 28 Jan	KLM
25 Jan - 30 Jan	KLM
17 Jan - 24 Jan	KLM
21 Jan - 25 Jan	KLM
18 Jan - 25 Jan	KLM
21 Jan - 11 Feb	KLM
26 Jan - 18 Feb	KLM
25 Jan - 18 Feb	KLM
25 Jan - 24 Feb	KLM
23 Jan - 08 Feb	British Airways
25 Jan - 01 Feb	British Airways
24 Jan - 07 Feb	British Airways
15 Jan - 02 Feb	British Airways

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 603€

Return flights