Cheapest return flights from Seattle to Istanbul in May from 704€

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

Return flights

16 May - 30 May Aer Lingus
04 May - 18 May KLM
21 May - 01 Jun KLM
07 May - 21 May KLM
23 May - 06 Jun Icelandair
15 May - 30 May Icelandair
07 May - 21 May Turkish Airlines direct
04 May - 18 May Turkish Airlines direct
16 May - 30 May Turkish Airlines direct
21 May - 01 Jun Turkish Airlines direct
23 May - 06 Jun Turkish Airlines direct

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

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