S$688 Cheap Flights from Washington to Bangkok

View S$688 flight on Thu, 18 Sep, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK)

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Cheap Flights from Washington to Bangkok (DCA-BKK)

Prices were available within the past 7 days and start at S$688 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Washington (DCA) to Bangkok (BKK)

September is typically the cheapest month to fly

From S$1,080 - S$1,826 per traveller.

Graph displaying average flight prices per month

Washington to Bangkok route information
Origin airport
Ronald Reagan Washington National
Destination airport
Suvarnabhumi Intl.
Distance
14085 km

Flights from Washington to Bangkok

There are several airlines that operate frequent flights from Washington D.C. (DCA) to Bangkok (BKK) including

The earliest flight leaves Ronald Reagan Washington National Airport at 09:35 and arrives at Suvarnabhumi Intl. Airport at 05:45. The last flight of the day departs Washington D.C. at 17:45 and arrives at Bangkok at 23:35.

The flight distance from Washington D.C. to Bangkok is about 15573 km, the shortest flight is 00 hours with American Airlines."

Expedia lets you search across the largest number of airlines and Bangkok flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Washington Bangkok flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Washington to Bangkok trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Bangkok flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Washington to Bangkok with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from DCA to BKK?
If you're travelling from DCA to Suvarnabhumi Airport, round-trip journeys start from . This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal pass you by. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Ronald Reagan Washington National Airport (DCA) to BKK?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from DCA to BKK that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for DCA to BKK flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Ronald Reagan Washington National Airport (DCA) to BKK?
With a flight distance of 14,200 kilometres between Ronald Reagan Washington National Airport (DCA) and Bangkok Airport, this is a long journey. Remember to drink lots of water and move your legs every now and then.
Which airlines fly direct from National Airport to Suvarnabhumi Intl. Airport (BKK)?
There are no direct flights, so you'll need to make at least one stop between DCA and BKK. Make the most of the layover time to stretch your legs and grab a bite to eat.
Are DCA to Bangkok Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to get great last-minute deals from Ronald Reagan Washington National Airport (DCA) to BKK, but it can also be hit-or-miss. As many airlines advertise prices up to 12 months in advance, it's worth keeping an eye on fares early and being ready to pounce when you spot a good bargain. Expedia compares carrier prices and updates flight deals often, so you can be sure you're always getting the latest offers.

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Washington Airports

Washington

Washington Dulles Intl. to Bangkok
S$1,216.40
*Available to Expedia members.