AirHint found the following cheapest return flights from Seattle (SEA) to Istanbul (IST) in November 2025 (see full year).

Return flights

17 Nov - 25 Nov	Icelandair
16 Nov - 24 Nov	Icelandair
12 Nov - 19 Nov	Icelandair
09 Nov - 16 Nov	Icelandair
07 Nov - 29 Nov	Alaska Airlines
12 Nov - 19 Nov	Turkish Airlines	direct
29 Nov - 09 Dec	Delta
16 Nov - 24 Nov	Turkish Airlines	direct
09 Nov - 16 Nov	Turkish Airlines	direct

Also check the deals for one-way flights from Seattle to Istanbul in November.

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 Seattle to Istanbul in November from 472€

Return flights