Roundtrip Flight: San Francisco (SFO) to Ho Chi Minh City, Vietnam (SGN) from $645

Note: To book this deal, use the dates below and book with Expedia. Prices will vary by dates selected. Flights make one-stop each way in Tokyo or Singapore
Departs SFO: Aug 22-23, 27-31; Sept 1, 3-8, 10-15, 19, 21, 26, 28; Oct 1-3, 5-12, 16-17, 19, 22-25, 29-31; Nov 1, 5, 13, 20-21, 27-29
Returns: Aug 28-31; Sept 1-3, 5-7, 10, 12-13, 17-22, 24-30; Oct 1-27, 29-31; Nov 1, 5-8, 12-15, 19-22, 26-29; Dec 3-6, 11-13