AirHint found the following cheapest return flights from Seattle (SEA) to Ho Chi Minh City (SGN) in September 2025 (see full year).

Return flights

08 Sep - 29 Sep	Asiana Airlines
16 Sep - 25 Sep	Asiana Airlines
22 Sep - 20 Oct	Asiana Airlines
18 Sep - 01 Oct	Asiana Airlines
03 Sep - 24 Sep	Korean Air
23 Sep - 04 Oct	Asiana Airlines
14 Sep - 21 Sep	Asiana Airlines

Also check the deals for one-way flights from Seattle to Ho Chi Minh City in September.

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.

Book a cheap hotel in Ho Chi Minh City

Cheap car rent in Ho Chi Minh City

Cheapest return flights from Seattle to Ho Chi Minh City in September from $650

Return flights