Cheapest return flights from Seattle to Istanbul in April from $554

AirHint found the following cheapest return flights from Seattle (SEA) to Istanbul (SAW) in April 2026 (see full year).

Return flights

21 Apr - 05 May Icelandair
07 Apr - 14 Apr Icelandair
13 Apr - 23 Apr Icelandair
07 Apr - 21 Apr Icelandair
22 Apr - 29 Apr KLM
18 Apr - 27 Apr Icelandair
23 Apr - 28 Apr Icelandair
20 Apr - 30 Apr Air Canada
06 Apr - 20 Apr Air Canada
16 Apr - 03 May Icelandair
15 Apr - 19 Apr Icelandair
14 Apr - 18 Apr KLM
10 Apr - 03 May Hawaiian Airlines
09 Apr - 01 May Hawaiian Airlines
15 Apr - 05 May Qatar Airways
29 Apr - 07 May Qatar Airways

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

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