$595 - Flights to Vietnam from San Francisco
This September through November, United, Northwest, and Delta are all offering discount one-stop flights to Vietnam for $595 roundtrip including all taxes and fees.
Cheap Flights to Vietnam from San Francisco
$871 - Flights to Saigon, Vietnam from San Francisco
Cheapest flights fly out on Wednesdays or Thursday, but try searching for flights on other days of the week as well. 7 day vacations seem to the cheapest (so that you fly in and out on Wednesday), but these prices have been going down recently, so you may be able to find discounts on other days of the week as well.
