AirHint found the following cheapest return flights from Seattle (SEA) to Istanbul (SAW) in May 2026 (see full year).
Return flights
| 09 May - 16 May | Icelandair | ||
| 10 May - 17 May | KLM | ||
| 21 May - 26 May | Icelandair | ||
| 29 May - 14 Jun | KLM | ||
| 17 May - 31 May | Qatar Airways | ||
| 20 May - 03 Jun | Qatar Airways | ||
| 13 May - 27 May | Qatar Airways |
Also check the deals for one-way flights from Seattle to Istanbul in May.
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