Bangkok to San Francisco (BKK–SFO) — Airlines, Schedules & Connections

Thai passport holders need a B1/B2 visa to enter the United States. Thailand is not part of the Visa Waiver Program, so ESTA is not available. Apply online by completing the DS-160 form at ceac.state.gov, then schedule an interview at the US Embassy in Bangkok. The B1/B2 visa fee is $185 plus a $250 visa integrity fee (total $435 as of 2026). Bring your DS-160 confirmation, appointment letter, passport photos, and supporting documents to the interview. Passport must be valid for at least 6 months beyond the date of entry.

Supporting documents that strengthen your application include proof of employment or business in Thailand, bank statements, property ownership, family ties in Thailand, and a clear travel itinerary with hotel bookings. The consular officer decides on the spot. If approved, the visa is typically a 10-year multiple-entry B1/B2, allowing stays of up to 6 months per visit. Visa pickup or delivery takes 3 to 5 working days after the interview. Interview wait times at the Bangkok embassy vary from 1 to 4 weeks depending on the season.

Direct flights from Bangkok Suvarnabhumi (BKK) to New York JFK run about 17 hours on Thai Airways (with one stop). No nonstop BKK to US flights exist as of early 2026, but one-stop options through Tokyo, Seoul, or Taipei take 18 to 22 hours. The US dollar trades at roughly 35 THB per $1. CBP at the US port of entry takes fingerprints, a photo, and asks about your trip purpose. Global Entry ($120 for 5 years) provides expedited CBP processing with kiosks instead of officer queues, available to Thai nationals.

Airport Rail Link (ARL) runs from Phaya Thai station to Suvarnabhumi in 30 minutes (฿45 City Line; ฿90–130 Express, though Express service is often suspended). Trains run 6am to midnight. Transfer at Makkasan for MRT or Phaya Thai for BTS Skytrain.Metered taxis cost ฿250–400 from central Bangkok plus expressway tolls (฿50–75); expect 40–90 minutes depending on traffic. Avoid non-metered taxis; insist on the meter. Ride-share apps (Grab) are widely used and typically cost ฿200–350.

BART from SFO station (free AirTrain from any terminal to the station) to downtown San Francisco takes 30–40 minutes ($10.45 to Embarcadero). Traffic on 101 can make taxis and ride-hails much slower during peak hours; BART skips all of that. BART also reaches Oakland, Berkeley, and Millbrae for Caltrain connections.Ride-hails from SFO use a dedicated garage pickup area; follow signs. Taxis are metered; downtown SF costs $40–60. Caltrain to the Peninsula (Mountain View, Palo Alto, San Jose) requires taking BART to Millbrae station for the transfer. Rental cars are at a consolidated facility accessible by AirTrain.

Coastal fog dominates the climate pattern. The thick marine layer ("Karl the Fog") rolls into SFO from the Pacific regularly in summer (June–September), causing significant low-visibility delays even on days that appear sunny inland. Morning fog burns off by afternoon most days, but persistent IFR conditions can last all day. This is the primary flight disruption risk at SFO.

Temperatures are mild year-round (10–20°C) with little seasonal variation. Winters bring rain (December–March) and occasional atmospheric river events that cause brief but intense flooding on the 101. Summers are cool. Pack a light jacket year-round. Wind off the bay affects small aircraft approach paths.