Cheapest return flights from Seattle to Istanbul in May from 570€

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

Return flights

13 May - 20 May Icelandair
05 May - 30 May Icelandair
04 May - 13 May Lufthansa
13 May - 06 Jun Aer Lingus
10 May - 24 May Lufthansa
07 May - 21 May Air France
05 May - 30 May Turkish Airlines direct
07 May - 21 May Turkish Airlines direct
04 May - 13 May Turkish Airlines direct
13 May - 20 May Turkish Airlines direct
10 May - 24 May Turkish Airlines direct
13 May - 06 Jun Turkish Airlines direct

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

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