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

Return flights

02 Sep - 24 Sep	Turkish Airlines
10 Sep - 17 Sep	Turkish Airlines
09 Sep - 23 Sep	Turkish Airlines
08 Sep - 24 Sep	Turkish Airlines
10 Sep - 24 Sep	Turkish Airlines
03 Sep - 10 Sep	Turkish Airlines
02 Sep - 10 Sep	Turkish Airlines
01 Sep - 12 Sep	Turkish Airlines
08 Sep - 15 Sep	Turkish Airlines
13 Sep - 23 Sep	Turkish Airlines
26 Sep - 31 Oct	Turkish Airlines
10 Sep - 05 Oct	Korean Air
09 Sep - 05 Oct	Korean Air
17 Sep - 05 Oct	Korean Air
08 Sep - 02 Oct	Turkish Airlines
17 Sep - 01 Oct	Turkish Airlines
24 Sep - 08 Oct	Turkish Airlines
16 Sep - 10 Oct	Turkish Airlines
17 Sep - 03 Oct	Turkish Airlines
03 Sep - 10 Oct	Turkish Airlines

Also check the deals for one-way flights from Washington 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.

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Cheapest return flights from Washington to Ho Chi Minh City in September from $738

Return flights