Cheapest one-way flights from Seattle (SEA) to Istanbul (IST), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
20 Sep Icelandair
04 Sep Icelandair
18 Sep Icelandair
08 Sep Icelandair
28 Sep Icelandair
14 Sep Icelandair
03 Sep Icelandair
06 Sep Icelandair
05 Sep Icelandair
15 Sep Frontier Airlines
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deals for return flights from Seattle to Istanbul in September.

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Updated Jul 13, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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