Flying from Washington to Bangkok can be expensive. Our search helps you compare cheap flights, airfare deals, and flight tickets across airlines and agencies so you can book at the best price.
We scan trusted travel agencies and airline booking systems for the route Washington - Bangkok (WAS - BKK). We do not sell tickets or add fees - you choose where to buy.
Airfares vary by date, time, and airport. Use filters to find the best option by departure/arrival time, number of stops, airline or alliance, and booking channel.
If your dates are flexible, check the low-fare calendar to find the cheapest days. Booking round-trip in one order often reduces fees, and prices usually rise as departure approaches.
We also recommend you to look through the prices for return tickets from Bangkok to Washington.
Airfares found by our users in the past 24 hours
The price for these dates could change. Use search to get the best price.
Average round-trip airfares from Washington to Bangkok by months
| Month | Round-Trip |
|---|---|
| February 2026 | find now |
| March 2026 | find now |
| April 2026 | find now |
| May 2026 | 10.05 - 23.05from £699 |
| June 2026 | find now |
| July 2026 | find now |
| August 2026 | find now |
| September 2026 | find now |
| October 2026 | find now |
| November 2026 | find now |
| December 2026 | find now |
| January 2027 | find now |
Prices shown are based on searches from the last few days. Ticket prices can change and depend on availability at the time of booking.
Airlines are flying from Washington to Bangkok
| Korean Air |
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Frequently asked questions about flights from Washington to Bangkok
How long does the flight from Washington to Bangkok take?
Flight duration from Washington to Bangkok varies by route, airline, and number of stops. Direct flights are faster. Use our search to compare options.
Are there direct flights from Washington to Bangkok?
Availability of direct flights from Washington to Bangkok depends on the route and season. Use the "Direct" filter in search to see only direct options.
Which airlines fly from Washington to Bangkok?
Several airlines operate flights from Washington to Bangkok. On this page you see airlines serving this route. Our search compares prices across airlines and agencies.
What is the cheapest month to fly from Washington to Bangkok?
Prices from Washington to Bangkok vary by month and demand. On this page you see average prices by month. Use the low-fare calendar and monthly table to find the cheapest dates.