Cheapest return flights from Seattle to Sofia in January from $442

AirHint found the following cheapest return flights from Seattle (SEA) to Sofia (SOF) in January 2026 (see full year).

Return flights

08 Jan - 28 Jan Lufthansa
08 Jan - 24 Jan Lufthansa
01 Jan - 27 Jan Lufthansa
01 Jan - 25 Jan Lufthansa
04 Jan - 28 Jan Turkish Airlines
04 Jan - 27 Jan Turkish Airlines
02 Jan - 27 Jan Lufthansa
03 Jan - 22 Jan Turkish Airlines
04 Jan - 26 Jan Turkish Airlines
04 Jan - 25 Jan Turkish Airlines

Also check the deals for one-way flights from Seattle to Sofia in January.

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