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

Return flights

05 Dec - 26 Dec	Alaska Airlines
01 Dec - 30 Jan	Turkish Airlines
10 Dec - 12 Jan	Hawaiian Airlines
06 Dec - 26 Dec	Alaska Airlines
06 Dec - 27 Dec	Alaska Airlines
05 Dec - 27 Dec	Korean Air
10 Dec - 24 Dec	Asiana Airlines
09 Dec - 09 Jan	Korean Air
28 Dec - 18 Jan	United
07 Dec - 10 Jan	Alaska Airlines
16 Dec - 19 Jan	Korean Air
27 Dec - 18 Jan	Alaska Airlines
16 Dec - 15 Jan	Korean Air
09 Dec - 10 Jan	Lufthansa
15 Dec - 13 Jan	Alaska Airlines

Also check the deals for one-way flights from Washington to Manila 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 Manila in December from $1114

Return flights