AirHint found the following cheapest return flights from Washington (IAD) to Taipei (TPE) in December 2025 (see full year).

Return flights

04 Dec - 11 Dec	Turkish Airlines
05 Dec - 12 Dec	Turkish Airlines
09 Dec - 19 Jan	Turkish Airlines
11 Dec - 17 Jan	Turkish Airlines
05 Dec - 19 Dec	Turkish Airlines
14 Dec - 15 Jan	Hawaiian Airlines
22 Dec - 25 Jan	Ethiopian Airlines
14 Dec - 28 Dec	Delta
17 Dec - 16 Jan	Delta
23 Dec - 07 Jan	Frontier Airlines
20 Dec - 20 Jan	Frontier Airlines
22 Dec - 13 Jan	Alaska Airlines
20 Dec - 03 Jan	Frontier Airlines
19 Dec - 04 Jan	Frontier Airlines

Also check the deals for one-way flights from Washington to Taipei 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 Washington to Taipei in December from 813€

Return flights