Cheapest return flights from Seattle to Istanbul in December from $556

AirHint found the following cheapest return flights from Seattle (SEA) to Istanbul (SAW) in December 2025 (see full year).

Return flights

02 Dec - 11 Dec Icelandair
03 Dec - 12 Dec KLM
04 Dec - 10 Dec Icelandair
03 Dec - 08 Dec Lufthansa
29 Dec - 24 Jan Icelandair
06 Dec - 08 Jan Alaska Airlines
01 Dec - 31 Jan Alaska Airlines
15 Dec - 22 Dec Air Canada
06 Dec - 27 Dec Hawaiian Airlines
14 Dec - 21 Dec Hawaiian Airlines
16 Dec - 10 Jan Icelandair
15 Dec - 10 Jan Hawaiian Airlines
29 Dec - 05 Jan WestJet
24 Dec - 30 Dec Condor
18 Dec - 10 Jan WestJet
17 Dec - 10 Jan Hawaiian Airlines
11 Dec - 03 Jan WestJet
04 Dec - 23 Dec Qatar Airways
17 Dec - 24 Dec Aer Lingus
17 Dec - 04 Jan Aer Lingus

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

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