To save on the cost of your flight from Santa Ana to Vietnam, book at least 48 days before your planned departure. Booking around this time can save you about 5% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $864 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $873.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, August can be a great choice for travel to Vietnam. Flights to Vietnam from Santa Ana in August are about $913 on average during August, but can be found for as low as $745.