Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Bangkok. Flights to Bangkok from Santa Ana in April are about $610 on average during April, but can be found for as low as $406.
To save up to 23% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Santa Ana to Bangkok from $650 1-2 weeks out and tickets from $662 for flights departing within the next 72 hours.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Santa Ana to Bangkok as you normally would.