Cheapest one-way flights from Seattle to Istanbul in August from $338

AirHint found the following cheapest one-way flights from Seattle (SEA) to Istanbul (IST) in August 2026 (see full year).

One-Way flights

19 Aug Aer Lingus
24 Aug Aer Lingus
04 Aug KLM
19 Aug Turkish Airlines direct
24 Aug Turkish Airlines direct
04 Aug Turkish Airlines direct
28 Aug Qatar Airways
29 Aug Turkish Airlines direct
28 Aug Turkish Airlines direct

Also check the deals for return flights from Seattle to Istanbul in August.

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