Bangkok (BKK) → Washington (IAD)
About Bangkok to Washington Flights
Discover the best flights from Bangkok to Washington, covering 14,158 km in approximately 18h 12m. Bangkok (BKK) to Washington (IAD) is one of the major long-haul routes connecting Thailand and United States. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Bangkok to Washington.
12-Month Price History
Flight prices from Bangkok to Washington vary significantly throughout the year. February typically offers the best deals with average prices around $2514, while July sees the highest prices, averaging $4208. Savvy travelers can save up to 40% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
115 days
For best prices
Booking Tips
For the best prices on Bangkok to Washington flights, we recommend booking 85 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
United Airlines UA | $3910 | $16390 | $24430 |
Thai Airways TG | $4280 | $18310 | $25070 |
Delta Air Lines DL | $4510 | $15450 | $27790 |
Thai VietJet Air VZ | $4670 | $18070 | $22420 |
Air France AF | $5030 | $18820 | $24630 |
American Airlines AA | $5300 | $15450 | $22670 |
British Airways BA | $5740 | $17460 | $29030 |
United Airlines
UA
Economy
$3910
Business
$16390
First
$24430
Thai Airways
TG
Economy
$4280
Business
$18310
First
$25070
Delta Air Lines
DL
Economy
$4510
Business
$15450
First
$27790
Thai VietJet Air
VZ
Economy
$4670
Business
$18070
First
$22420
Air France
AF
Economy
$5030
Business
$18820
First
$24630
American Airlines
AA
Economy
$5300
Business
$15450
First
$22670
British Airways
BA
Economy
$5740
Business
$17460
First
$29030
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Bangkok → Washington
Don Mueang International (DMK) to Washington Dulles International (IAD)
Distance: 14,133 km
Average price: $2886
Bangkok → Washington
Suvarnabhumi (BKK) to Ronald Reagan Washington National (DCA)
Distance: 14,168 km
Average price: $2893
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Frequently Asked Questions
How long is the flight from Bangkok to Washington?
The flight time from Bangkok (BKK) to Washington (IAD) is approximately 18 hours and 12 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Bangkok and Washington?
The aerial distance between Bangkok and Washington is 14,158 kilometers (8,797 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Bangkok to Washington?
Several airlines operate flights between Bangkok and Washington, including United Airlines, Thai Airways, Thai VietJet Air and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Bangkok to Washington?
Based on historical data, February typically offers the lowest airfares for flights from Bangkok to Washington. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Washington?
For the best prices on Bangkok to Washington flights, we recommend booking 135 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Bangkok to Washington?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of Thailand traveling to United States should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Bangkok and Washington?
Bangkok operates on Asia/Bangkok time zone, while Washington is in the America/New_York time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.