Cheapest one-way flights from Seattle to Istanbul in December from 268€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Istanbul (IST) in December 2025 (see full year).

One-Way flights

02 Dec WestJet
29 Dec Alaska Airlines
31 Dec WestJet
03 Dec Alaska Airlines
25 Dec Alaska Airlines
26 Dec Alaska Airlines
28 Dec Icelandair
27 Dec Alaska Airlines
16 Dec Hawaiian Airlines
31 Dec Turkish Airlines direct

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

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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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