Bangkok to Dulles (BKK–IAD) — 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.

Silver Line Metro runs from Washington Dulles Airport station to Metro Center in about 65 minutes (~$7). The route bypasses I-66 and I-495 congestion entirely. Washington Flyer coach also runs to Wiehle-Reston East station ($6, 15 min) for Metro connection.Taxis and ride-shares to downtown DC cost $55–80 and take 35–55 minutes depending on traffic. Car rental facilities are on-site. Dulles is 27 miles west of the Capitol; it is farther than either DCA or BWI from central DC.

Humid continental climate. Summers are hot and muggy (30–36°C) with frequent afternoon thunderstorms that cause delays June through August. Winters bring cold temperatures (−3 to 5°C) with snow and ice. The Virginia suburbs accumulate more snow than downtown DC, and ice storms are the primary disruption risk.

Dulles sits at higher elevation in Virginia's piedmont and sees more winter precipitation than DCA. Spring and fall are variable. Snowfall is possible into April. Thunderstorms begin from April through May.