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

Return flights

14 Oct - 28 Oct	KLM
21 Oct - 28 Oct	KLM
21 Oct - 27 Nov	KLM
22 Oct - 29 Oct	Air France
01 Oct - 06 Oct	KLM
20 Oct - 26 Oct	KLM
15 Oct - 02 Nov	KLM
01 Oct - 10 Oct	KLM
15 Oct - 22 Oct	KLM
13 Oct - 20 Oct	KLM
22 Oct - 09 Nov	KLM
04 Oct - 11 Oct	KLM
20 Oct - 03 Nov	KLM
07 Oct - 12 Nov	KLM
17 Oct - 23 Oct	Air France
31 Oct - 08 Nov	Icelandair
31 Oct - 07 Nov	KLM
21 Oct - 27 Nov	Turkish Airlines	direct
07 Oct - 12 Nov	Turkish Airlines	direct
20 Oct - 03 Nov	Turkish Airlines	direct

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

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 Istanbul to Washington in October from $446

Return flights