S$601 Cheap Flights from Washington to Bangkok

View S$601 flight on Thu, 18 Sep, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)

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Cheap Flights from Washington to Bangkok (IAD-BKK)

Prices were available within the past 7 days and start at S$601 for one-way flights and S$1,183 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Wed, 20 Aug - Wed, 27 Aug
IAD
Washington
BKK
Bangkok
S$1,183 Return, found 1 day ago
S$1,183
Return
found 1 day ago
Select Korean Air flight, departing Wed, 20 Aug from Washington to Bangkok, returning Wed, 27 Aug, priced at S$1,183 found 1 day ago
United
Thu, 28 Aug - Thu, 4 Sep
IAD
Washington
BKK
Bangkok
S$1,189 Return, found 2 days ago
S$1,189
Return
found 2 days ago
Select United flight, departing Thu, 28 Aug from Washington to Bangkok, returning Thu, 4 Sep, priced at S$1,189 found 2 days ago
United
Mon, 25 Aug - Mon, 1 Sep
IAD
Washington
BKK
Bangkok
S$1,189 Return, found 5 days ago
S$1,189
Return
found 5 days ago
Select United flight, departing Mon, 25 Aug from Washington to Bangkok, returning Mon, 1 Sep, priced at S$1,189 found 5 days ago
All Nippon Airways
Wed, 20 Aug - Wed, 27 Aug
IAD
Washington
BKK
Bangkok
S$1,219 Return, found 1 day ago
S$1,219
Return
found 1 day ago
Select All Nippon Airways flight, departing Wed, 20 Aug from Washington to Bangkok, returning Wed, 27 Aug, priced at S$1,219 found 1 day ago
Etihad Airways
Thu, 28 Aug - Thu, 4 Sep
IAD
Washington
BKK
Bangkok
S$1,332 Return, found 2 days ago
S$1,332
Return
found 2 days ago
Select Etihad Airways flight, departing Thu, 28 Aug from Washington to Bangkok, returning Thu, 4 Sep, priced at S$1,332 found 2 days ago
American Airlines
Thu, 28 Aug - Thu, 4 Sep
IAD
Washington
BKK
Bangkok
S$1,398 Return, found 2 days ago
S$1,398
Return
found 2 days ago
Select American Airlines flight, departing Thu, 28 Aug from Washington to Bangkok, returning Thu, 4 Sep, priced at S$1,398 found 2 days ago
Qatar Airways
Thu, 28 Aug - Thu, 4 Sep
IAD
Washington
BKK
Bangkok
S$1,400 Return, found 2 days ago
S$1,400
Return
found 2 days ago
Select Qatar Airways flight, departing Thu, 28 Aug from Washington to Bangkok, returning Thu, 4 Sep, priced at S$1,400 found 2 days ago
Delta
Mon, 25 Aug - Mon, 1 Sep
IAD
Washington
BKK
Bangkok
S$1,496 Return, found 5 days ago
S$1,496
Return
found 5 days ago
Select Delta flight, departing Mon, 25 Aug from Washington to Bangkok, returning Mon, 1 Sep, priced at S$1,496 found 5 days ago
Korean Air
Wed, 20 Aug - Wed, 27 Aug
IAD
Washington
BKK
Bangkok
S$1,569 Return, found 1 day ago
S$1,569
Return
found 1 day ago
Select Korean Air flight, departing Wed, 20 Aug from Washington to Bangkok, returning Wed, 27 Aug, priced at S$1,569 found 1 day ago
Air India
Wed, 20 Aug - Wed, 27 Aug
IAD
Washington
BKK
Bangkok
S$1,672 Return, found 1 day ago
S$1,672
Return
found 1 day ago
Select Air India flight, departing Wed, 20 Aug from Washington to Bangkok, returning Wed, 27 Aug, priced at S$1,672 found 1 day ago

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

September is typically the cheapest month to fly

From S$989 - S$1,842 per traveller.

Graph displaying average flight prices per month

Washington to Bangkok route information
Origin airport
Washington Dulles Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, Air India, All Nippon Airways, American Airlines, Austrian Airlines, Delta, Emirates, Ethiopian Airlines, Etihad Airways, KLM, Korean Air, Qatar Airways, Swiss International Air Lines, Thai Airways International, Turkish Airlines, United
Return price
S$1,183
Distance
14075 km

Perfect flights from Washington to Bangkok

Your Journey from Washington to Bangkok

Start your unforgettable journey with Expedia. Our broad selection of flights from Washington to Bangkok caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Korean Air, Etihad Airways, United, Air India, All Nippon Airways, Delta, Turkish Airlines, American Airlines, Qatar Airways. Our selection of flights from Washington Dulles Intl. to Suvarnabhumi Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Washington to Bangkok Flights

Experience the joy of finding cheap flights from Washington Dulles Intl. to Suvarnabhumi Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$601 and roundtrip prices from S$1,183*.
 

Pre-Flight Essentials

Ensure a smooth journey from Washington to Bangkok with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Bangkok

Picture yourself stepping off the plane in Bangkok and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Washington to Bangkok Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to Bangkok.
 

Beyond the Flight – Exploring Bangkok

With Expedia, your adventure extends beyond the flight. Explore Bangkok at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Washington to Bangkok with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Washington to Bangkok with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from IAD to Suvarnabhumi Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight from IAD to Suvarnabhumi Intl. Airport (BKK) was S$1,183. Fares this good don't wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Suvarnabhumi Intl. Airport (BKK)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Airport 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 Dulles Intl. Airport to Bangkok Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)?
With a flight distance of 14,200 kilometres between Chantilly and Bang Phli, this is a long-haul journey. Remember to stay hydrated and move your legs every now and then.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)?
At present, no airlines offer direct flights from IAD to Suvarnabhumi Intl. Airport (BKK). You'll have to book a flight with one or more stops. To score the best connections and price, lock in your airfare well in advance.
Are Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK) flight tickets cheaper when they're purchased at the last minute?
Tickets from IAD to BKK are available up to 12 months prior to departure on Expedia. And although you may occasionally score a fantastic last-minute deal, it's never something you can count on. Also, booking your flights in advance means you'll have more options --- and you can avoid getting stuck in the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so keep checking in for all the latest specials.

Explore a world of travel with Expedia

Washington Airports

Washington

Ronald Reagan Washington National to Bangkok
S$1,217.80
*Available to Expedia members.