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

Return flights

29 Dec - 30 Jan	Lufthansa
10 Dec - 17 Jan	Delta
13 Dec - 15 Jan	Delta
15 Dec - 16 Jan	Lufthansa
13 Dec - 16 Jan	Hawaiian Airlines
13 Dec - 14 Jan	Hawaiian Airlines
14 Dec - 16 Jan	Alaska Airlines
12 Dec - 16 Jan	Hawaiian Airlines
13 Dec - 18 Jan	Hawaiian Airlines

Also check the deals for one-way flights from Portland 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 Portland to Bangalore in December from $817

Return flights