Bangkok to Houston (BKK–IAH) — 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.

No direct rail from IAH. The METRO bus 102 (IAH Express) runs to downtown Houston's transit center (60–90 min, $1.25). Taxis to downtown Houston cost $50–70. Ride-hails pick up at the designated Rideshare zones outside baggage claim on the lower level.IAH has five terminals (A–E) connected by an underground tunnel with trams. Terminal D handles international arrivals. Rental car agencies are in a consolidated facility adjacent to Terminal C; a free IAH Connector bus runs between terminals and the rental car center. The Galleria / Uptown area costs $35–50 by ride-hail.

Humid subtropical climate. Hot, humid, and wet for much of the year. Summers are brutal (33–38°C) with high humidity and near-daily afternoon thunderstorms. Severe storms with hail and high winds regularly cause ground stops from April through September. Houston's flooding risk is significant. Heavy rain events, including tropical system remnants, have flooded airport roads, cutting off surface access even when the airport itself remains operational.

Winters are mild (5–18°C) with occasional ice storms. These are rare but highly disruptive when they occur. Hurricane season (June–November) requires monitoring for Gulf storms. October through March has the best flying weather.