Cheapest one-way flights from Seattle to Istanbul in December from 286€

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

One-Way flights

09 Dec Hawaiian Airlines
08 Dec Hawaiian Airlines
10 Dec Hawaiian Airlines
27 Dec Air France
22 Dec KLM
29 Dec Turkish Airlines direct
08 Dec Turkish Airlines direct
09 Dec Turkish Airlines direct
27 Dec Turkish Airlines direct
10 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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