Cheap Flights from Bangkok to San Francisco from $399

Frequently Asked Questions

• What are the cheapest flights from Bangkok to San Francisco (BKK-SFO)?

  Based on Trip.com data, Singapore Airlines offers one-way fares as low as $399 on Cheapest nonstop routes (e.g. BKK to SFO on Thu, Jan 29), while Asiana Airlines offers Cheapest nonstop round-trips from $641 departing on Tue, Feb 10 and returning on Tue, Feb 17.

• Which airlines offer direct flights from Bangkok to San Francisco?

  At the moment, you can catch a nonstop flight from Bangkok to San Francisco with the following airlines, including: Thai Vietjet Air United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• When is the best time to book flights from Bangkok to San Francisco?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Bangkok to San Francisco is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Bangkok to San Francisco?

  To find best deals on flights from Bangkok to San Francisco, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Jan 29, with one-way flights priced at just $399.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Singapore Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for San Francisco travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Bangkok (BKK) to San Francisco (SFO) the cheapest?

  The cheapest months to fly from Bangkok to San Francisco is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Bangkok to San Francisco on?

  After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Bangkok to San Francisco on December 14, 2025 with Air Premia, with prices starting at $341.

• Which airports can I fly to for San Francisco from Bangkok?

  You can land at any one of the following hubs in San Francisco, with Suvarnabhumi Airport to San Francisco International Airport (BKK-SFO) is by far the most common option on this route: San Francisco International Airport (SFO).

• Is there any time difference between Bangkok and San Francisco?

  The time difference between San Francisco and Bangkok is 15h.

• How do I change or cancel my ticket from Bangkok to San Francisco?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.