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

Return flights

03 Dec - 10 Dec	Delta
02 Dec - 09 Dec	Delta
03 Dec - 20 Dec	Delta
09 Dec - 16 Dec	Hawaiian Airlines
01 Dec - 08 Dec	Korean Air
02 Dec - 14 Jan	Lufthansa
02 Dec - 15 Jan	Alaska Airlines
04 Dec - 11 Dec	Hainan Airlines
30 Dec - 18 Jan	Lufthansa
08 Dec - 23 Dec	Hawaiian Airlines
08 Dec - 15 Dec	Hawaiian Airlines
07 Dec - 14 Dec	Hawaiian Airlines
05 Dec - 12 Dec	Korean Air
25 Dec - 17 Jan	Delta
31 Dec - 07 Jan	Qatar Airways
30 Dec - 06 Jan	Qatar Airways
13 Dec - 13 Jan	Hawaiian Airlines
23 Dec - 17 Jan	Korean Air
29 Dec - 05 Jan	Qatar Airways
10 Dec - 08 Jan	Icelandair

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 816€

Return flights