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

Return flights

25 Dec - 28 Jan	KLM
25 Dec - 17 Jan	KLM
16 Dec - 16 Jan	Delta
17 Dec - 13 Jan	Delta
24 Dec - 04 Jan	Delta
05 Dec - 16 Jan	Delta
16 Dec - 12 Jan	Delta
15 Dec - 05 Jan	Delta
12 Dec - 05 Jan	Delta
16 Dec - 11 Jan	Delta
24 Dec - 30 Dec	Air India
23 Dec - 30 Dec	Air India
21 Dec - 28 Dec	Air India
18 Dec - 31 Dec	Air India
24 Dec - 31 Dec	Air India
16 Dec - 30 Dec	Delta
12 Dec - 31 Dec	Lufthansa
22 Dec - 31 Dec	Lufthansa
22 Dec - 29 Dec	Air India
20 Dec - 30 Dec	IndiGo

Also check the deals for one-way flights from Bangalore to San Francisco 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 Bangalore to San Francisco in December from 607€

Return flights