Cheapest one-way flights from Seattle to Istanbul in May from 255€

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

One-Way flights

15 May Icelandair
09 May Icelandair
10 May Lufthansa
11 May British Airways
13 May Delta
10 May Turkish Airlines direct
11 May Turkish Airlines direct
15 May Turkish Airlines direct
16 May Turkish Airlines direct
09 May Turkish Airlines direct

Also check the deals for return flights from Seattle to Istanbul in May.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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