Orbitz has flights from San Francisco, CA to Ho Chi Minh City (Saigon), Vietnam (SFO –> SGN) for $594 round-trip for travel in September, October and November on United Airlines.

Things I loved about Vietnam:

• my 1st Vietnamese coffee in HCMC
• swimming in Halong Bay near Hanoi
• motorbiking in the imperial city of Hue
• shopping in Hoi An
• crawling in the Cu Chi tunnels near Saigon (HCMC)

Intrepid Travel has 15-day Vietnam trips from $740+ with an 20% off last minute departures leaving Sept 2, 2009. Reminder: Don’t bother booking open-jaw flights out of Vietnam, as budget airlines in SE Asia — like JetStar — are much more convenient and affordable, usually less than $50 one-way.