San Francisco (SFO) to Bangkok (BKK) is about 7,923 miles (12,751 km), roughly 16 h 20 min of flying time. Bangkok is 15 hours ahead of San Francisco in January, and 14 hours ahead of San Francisco in July.
When is the cheapest time to fly from San Francisco to Bangkok?
Lowest round-trip fares found in recent searches for each month (7 to 14 day trips). Pick a cheap month, then confirm the live price.
Are there nearby airports that could be cheaper?
Fares at a neighboring airport are sometimes lower. Worth comparing on this route:
- OAKOakland San Francisco Bay Airport across the bay in Oakland.
- SJCSan José Mineta International Airport serves San José and Silicon Valley.
- DMKDon Mueang International Airport Bangkok's second airport, used mainly by low-cost carriers.
What do I need before flying to Bangkok?
This is an international trip, so you need a valid passport. Entry rules, visas and health requirements change, so check the official US State Department page before you book: Thailand travel information.
Plan how you will stay connected; an eSIM is usually cheaper than your carrier's roaming plan. See travel services.
Stay connected in Bangkok
An eSIM gives you local data from the moment you land, usually far cheaper than roaming.
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Things to do in Bangkok
Popular attractions and tickets, most with free cancellation.
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Frequently asked questions
How far is San Francisco from Bangkok by plane?
The great-circle distance between SFO and BKK is about 7,923 miles (12,751 km).
How long does it take to fly from San Francisco to Bangkok?
About 16 h 20 min of flying time based on distance, if a nonstop flight operates. Actual schedules vary by airline and wind, and itineraries with connections take longer.
What is the time difference between San Francisco and Bangkok?
Bangkok is 15 hours ahead of San Francisco in January, and 14 hours ahead of San Francisco in July.
Distance and flying time are calculated from airport coordinates (OurAirports data) and a typical cruise speed; they are planning estimates, not schedules. Updated 2026-10-28.
