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

Return flights

05 Dec - 14 Jan	British Airways
15 Dec - 30 Dec	British Airways
15 Dec - 13 Jan	British Airways
15 Dec - 11 Jan	British Airways
19 Dec - 30 Dec	Turkish Airlines
19 Dec - 31 Dec	Air France
18 Dec - 04 Jan	Turkish Airlines
18 Dec - 03 Jan	Turkish Airlines
20 Dec - 31 Dec	Turkish Airlines
01 Dec - 28 Dec	Delta
05 Dec - 25 Dec	Delta
07 Dec - 24 Dec	Turkish Airlines
10 Dec - 08 Jan	Emirates
17 Dec - 08 Jan	Emirates
05 Dec - 01 Jan	Emirates
18 Dec - 09 Jan	Emirates
10 Dec - 15 Dec	Turkish Airlines
31 Dec - 03 Jan	Turkish Airlines
15 Dec - 16 Dec	Turkish Airlines
03 Dec - 15 Dec	Emirates

Also check the deals for one-way flights from Mumbai to Seattle 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 Mumbai to Seattle in December from 699€

Return flights