Cheapest return flights from Seattle to Manila in September from $591

AirHint found the following cheapest return flights from Seattle (SEA) to Manila (MNL) in September 2026 (see full year).

Return flights

08 Sep - 07 Oct Singapore Airlines
07 Sep - 06 Oct China Airlines
08 Sep - 07 Oct 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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