AirHint found the following cheapest return flights from Seattle (SEA) to Istanbul (SAW) in May 2026 (see full year).
Return flights
| 15 May - 04 Jun | Finnair | ||
| 05 May - 19 May | Icelandair | ||
| 20 May - 09 Jun | Lufthansa | ||
| 14 May - 21 May | KLM | ||
| 20 May - 23 Jun | Air Canada | ||
| 08 May - 22 May | Air Canada | ||
| 22 May - 18 Jun | KLM |
Also check the deals for one-way flights from Seattle to Istanbul in May.
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