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

Return flights

20 Aug - 27 Aug	Icelandair
21 Aug - 29 Aug	Icelandair
30 Aug - 13 Sep	Icelandair
04 Aug - 26 Aug	Icelandair
31 Aug - 07 Sep	Icelandair
21 Aug - 30 Aug	Icelandair
14 Aug - 24 Aug	Icelandair
25 Aug - 29 Aug	Icelandair
03 Aug - 25 Aug	Icelandair
21 Aug - 31 Aug	Icelandair
24 Aug - 05 Sep	Qatar Airways
03 Aug - 26 Aug	Icelandair
16 Aug - 20 Sep	Icelandair
07 Aug - 21 Aug	Icelandair
20 Aug - 20 Sep	Qatar Airways
07 Aug - 05 Sep	Qatar Airways

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

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Seattle to Istanbul in August from $653

Return flights