Cheapest return flights from Seattle to Manila in December from $818

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

Return flights

04 Dec - 18 Dec Singapore Airlines
04 Dec - 25 Dec Singapore Airlines
02 Dec - 09 Dec Air Canada
04 Dec - 23 Dec Philippine Airlines direct
04 Dec - 25 Dec Philippine Airlines direct
02 Dec - 19 Dec Philippine Airlines direct
02 Dec - 11 Dec Philippine Airlines direct
04 Dec - 18 Dec Philippine Airlines direct
02 Dec - 09 Dec Philippine Airlines direct
02 Dec - 17 Dec Philippine Airlines direct
30 Dec - 19 Jan Asiana Airlines
29 Dec - 17 Jan Korean Air
27 Dec - 16 Jan STARLUX Airlines
30 Dec - 15 Jan Philippine Airlines direct
28 Dec - 20 Jan STARLUX Airlines
31 Dec - 10 Jan STARLUX Airlines
29 Dec - 14 Jan STARLUX Airlines
24 Dec - 24 Jan Alaska Airlines
24 Dec - 21 Jan Alaska Airlines
26 Dec - 16 Jan Asiana Airlines

Also check the deals for one-way flights from Seattle to Manila in December.

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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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