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

Return flights

04 Dec - 11 Dec	Turkish Airlines
29 Dec - 29 Jan	Turkish Airlines
08 Dec - 22 Jan	Turkish Airlines
09 Dec - 20 Jan	Turkish Airlines
07 Dec - 22 Jan	Turkish Airlines
07 Dec - 15 Jan	Lufthansa
05 Dec - 21 Dec	Lufthansa
07 Dec - 16 Jan	Lufthansa
03 Dec - 13 Jan	Lufthansa
05 Dec - 14 Dec	Lufthansa
05 Dec - 13 Dec	Lufthansa
26 Dec - 26 Jan	Air Canada
05 Dec - 23 Dec	SWISS
05 Dec - 18 Jan	SWISS
26 Dec - 22 Jan	Air Canada
08 Dec - 26 Dec	Turkish Airlines
05 Dec - 20 Dec	Lufthansa
05 Dec - 27 Dec	Lufthansa
05 Dec - 31 Dec	Lufthansa
18 Dec - 25 Dec	Turkish Airlines

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

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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Cheapest return flights from Seattle to Mumbai in December from $755

Return flights