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

Return flights

01 Dec - 08 Dec	Turkish Airlines
02 Dec - 09 Dec	Delta
05 Dec - 12 Dec	Alaska Airlines
08 Dec - 15 Dec	Alaska Airlines
09 Dec - 16 Dec	Alaska Airlines
03 Dec - 10 Dec	Delta
04 Dec - 11 Dec	Delta
07 Dec - 14 Dec	KLM
06 Dec - 13 Dec	Alaska Airlines
10 Dec - 17 Dec	Alaska Airlines
12 Dec - 15 Jan	Alaska Airlines
08 Dec - 10 Jan	Lufthansa
22 Dec - 17 Jan	Lufthansa
18 Dec - 18 Jan	Alaska Airlines
20 Dec - 18 Jan	Alaska Airlines
09 Dec - 05 Jan	Turkish Airlines
06 Dec - 05 Jan	Hawaiian Airlines
18 Dec - 19 Jan	Lufthansa
02 Dec - 01 Jan	Lufthansa
01 Dec - 01 Jan	Turkish Airlines

Also check the deals for one-way flights from Seattle to Bangalore 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 Bangalore in December from $822

Return flights