$503 Cheap Flights from Washington (DCA) to Bangkok (BKK)

View $503 flight on Wed, Oct 29, 2025Opens in a new window

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

Cheap Flights from Washington to Bangkok (DCA-BKK)

Prices were available within the past 7 days and start at $503 for one-way flights and $891 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Mon, Sep 8 - Thu, Sep 18
DCA
Washington
BKK
Bangkok
$891 Roundtrip, found 2 hours ago
$891
Roundtrip
found 2 hours ago
Select JetBlue Airways flight, departing Mon, Sep 8 from Washington to Bangkok, returning Thu, Sep 18, priced at $891 found 2 hours ago
JetBlue Airways
Mon, Nov 10 - Mon, Nov 24
DCA
Washington
BKK
Bangkok
$902 Roundtrip, found 8 hours ago
$902
Roundtrip
found 8 hours ago
Select JetBlue Airways flight, departing Mon, Nov 10 from Washington to Bangkok, returning Mon, Nov 24, priced at $902 found 8 hours ago
JetBlue Airways
Wed, Sep 10 - Wed, Sep 24
DCA
Washington
BKK
Bangkok
$912 Roundtrip, found 1 day ago
$912
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Wed, Sep 10 from Washington to Bangkok, returning Wed, Sep 24, priced at $912 found 1 day ago
Delta
Mon, Dec 1 - Wed, Dec 17
DCA
Washington
BKK
Bangkok
$928 Roundtrip, found 7 hours ago
$928
Roundtrip
found 7 hours ago
Select Delta flight, departing Mon, Dec 1 from Washington to Bangkok, returning Wed, Dec 17, priced at $928 found 7 hours ago
Korean Air
Tue, Oct 28 - Mon, Nov 10
DCA
Washington
BKK
Bangkok
$934 Roundtrip, found 3 hours ago
$934
Roundtrip
found 3 hours ago
Select Korean Air flight, departing Tue, Oct 28 from Washington to Bangkok, returning Mon, Nov 10, priced at $934 found 3 hours ago
United
Thu, Jan 15 - Mon, Mar 16
DCA
Washington
BKK
Bangkok
$937 Roundtrip, found 4 hours ago
$937
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Jan 15 from Washington to Bangkok, returning Mon, Mar 16, priced at $937 found 4 hours ago
All Nippon Airways
Wed, Oct 29 - Mon, Nov 10
DCA
Washington
BKK
Bangkok
$966 Roundtrip, found 2 hours ago
$966
Roundtrip
found 2 hours ago
Select All Nippon Airways flight, departing Wed, Oct 29 from Washington to Bangkok, returning Mon, Nov 10, priced at $966 found 2 hours ago
Cathay Pacific
Thu, Aug 28 - Tue, Sep 2
DCA
Washington
BKK
Bangkok
$1,061 Roundtrip, found 7 hours ago
$1,061
Roundtrip
found 7 hours ago
Select Cathay Pacific flight, departing Thu, Aug 28 from Washington to Bangkok, returning Tue, Sep 2, priced at $1,061 found 7 hours ago
Japan Airlines
Sun, Aug 31 - Thu, Sep 4
DCA
Washington
BKK
Bangkok
$1,082 Roundtrip, found 7 hours ago
$1,082
Roundtrip
found 7 hours ago
Select Japan Airlines flight, departing Sun, Aug 31 from Washington to Bangkok, returning Thu, Sep 4, priced at $1,082 found 7 hours ago
American Airlines
Thu, Jan 15 - Mon, Mar 16
DCA
Washington
BKK
Bangkok
$1,097 Roundtrip, found 4 hours ago
$1,097
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Thu, Jan 15 from Washington to Bangkok, returning Mon, Mar 16, priced at $1,097 found 4 hours ago

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

September is typically the cheapest month to fly

From $839 - $1,419 per traveler.

Graph displaying average flight prices per month

Alternative airports near Bangkok

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Suvarnabhumi Intl. BKK. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $1,191
BKK
Suvarnabhumi Intl.
Cheapest
Average driving time to city center23 min
Flights from $1,191
Flights from Washington (DCA) to Bangkok (BKK)
Origin airport
Ronald Reagan Washington National
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, All Nippon Airways, American Airlines, British Airways, Cathay Pacific, Delta, Finnair, ITA Airways, Japan Airlines, JetBlue Airways, KLM, Korean Air, Qantas Airways, Qatar Airways, Singapore Airlines, United
Roundtrip price
$891
Distance
8803 mi

Washington to Bangkok Flights

The cheapest times to fly from Washington to Bangkok

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Bangkok are during the month of September. You can find some of the cheapest flights from Washington to Bangkok with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Bangkok

Sunday is one of the best days to book for cheap flights from Washington to Bangkok: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Bangkok

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Bangkok in 2025. You can also book with separate airlines for your outbound and return journeys, from $503 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Bangkok flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Bangkok airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK) cost?
Get a cheap one-way flight from $503 or cheap return flight from $891 from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK)?
Flying in September may help you find better deals, as it's the cheapest month for flights between DCA and BKK. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest DCA to BKK flight.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK)?
There are no daily nonstop flights departing from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from DCA to BKK?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK)?
To touch down at Suvarnabhumi Intl. Airport (BKK) without delays, choose a flight that leaves from Ronald Reagan Washington National Airport (DCA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK) last-minute?
Booking your flight from DCA to BKK shortly before your journey is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a DCA to BKK flight and hotel package?
You'll generally save money by securing a DCA to BKK flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've selected your ideal flights and accommodations, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Suvarnabhumi Intl. Airport (BKK)?
Typically, you can cancel or reschedule your DCA to BKK flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further details, head to our Customer Service portal.

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*Available to One Key members.