Cheapest return flights from Seattle to Istanbul in October from $622

Best time to book flights for Seattle (SEA) to Istanbul (IST) flights at AirHint

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

Return flights

15 Oct - 22 Oct Icelandair
30 Oct - 13 Nov British Airways
14 Oct - 28 Oct Qatar Airways
03 Oct - 17 Oct Qatar Airways
30 Oct - 13 Nov Turkish Airlines direct
15 Oct - 22 Oct Turkish Airlines direct
03 Oct - 17 Oct Turkish Airlines direct

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

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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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