Cheapest return flights from Seattle to Manila in September from $711

Best time to book flights for Seattle (SEA) to Manila (MNL) flights at AirHint

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

Return flights

16 Sep - 23 Sep China Airlines
17 Sep - 08 Oct Singapore Airlines
28 Sep - 31 Oct Asiana Airlines
03 Sep - 07 Sep Asiana Airlines
17 Sep - 08 Oct Philippine Airlines direct
03 Sep - 07 Sep Philippine Airlines direct

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

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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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