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CA $586 Cheap Flights from Washington (IAD) to Bangkok (BKK)

View CA $586 flight on Wed, Sep 23, 2026Opens in a new window

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

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Cheap flights from Washington (IAD) to Bangkok (BKK)

Prices were available within the past 7 days and start at CA $586 for one-way flights and CA $1,271 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Tue, Sep 22 - Tue, Sep 29
IAD
Washington
BKK
Bangkok
CA $1,271 Roundtrip, found 18 hours ago
CA $1,271
Roundtrip
found 18 hours ago
Select Etihad Airways flight, departing Tue, Sep 22 from Washington to Bangkok, returning Tue, Sep 29, priced at CA $1,271 found 18 hours ago
Korean Air
Mon, Nov 9 - Tue, Nov 24
IAD
Washington
BKK
Bangkok
CA $1,292 Roundtrip, found 2 days ago
CA $1,292
Roundtrip
found 2 days ago
Select Korean Air flight, departing Mon, Nov 9 from Washington to Bangkok, returning Tue, Nov 24, priced at CA $1,292 found 2 days ago
Qatar Airways
Tue, Sep 22 - Tue, Sep 29
IAD
Washington
BKK
Bangkok
CA $1,324 Roundtrip, found 18 hours ago
CA $1,324
Roundtrip
found 18 hours ago
Select Qatar Airways flight, departing Tue, Sep 22 from Washington to Bangkok, returning Tue, Sep 29, priced at CA $1,324 found 18 hours ago
ITA Airways
Tue, Dec 8 - Wed, Dec 16
IAD
Washington
BKK
Bangkok
CA $1,371 Roundtrip, found 2 days ago
CA $1,371
Roundtrip
found 2 days ago
Select ITA Airways flight, departing Tue, Dec 8 from Washington to Bangkok, returning Wed, Dec 16, priced at CA $1,371 found 2 days ago
Turkish Airlines
Mon, Feb 1 - Thu, Feb 25
IAD
Washington
BKK
Bangkok
CA $1,449 Roundtrip, found 1 day ago
CA $1,449
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Mon, Feb 1 from Washington to Bangkok, returning Thu, Feb 25, priced at CA $1,449 found 1 day ago
United
Mon, Sep 28 - Mon, Oct 5
IAD
Washington
BKK
Bangkok
CA $1,450 Roundtrip, found 2 days ago
CA $1,450
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 28 from Washington to Bangkok, returning Mon, Oct 5, priced at CA $1,450 found 2 days ago
Emirates
Tue, Jan 12 - Tue, Jan 19
IAD
Washington
BKK
Bangkok
CA $1,460 Roundtrip, found 18 hours ago
CA $1,460
Roundtrip
found 18 hours ago
Select Emirates flight, departing Tue, Jan 12 from Washington to Bangkok, returning Tue, Jan 19, priced at CA $1,460 found 18 hours ago
All Nippon Airways
Tue, Jan 12 - Tue, Jan 19
IAD
Washington
BKK
Bangkok
CA $1,482 Roundtrip, found 18 hours ago
CA $1,482
Roundtrip
found 18 hours ago
Select All Nippon Airways flight, departing Tue, Jan 12 from Washington to Bangkok, returning Tue, Jan 19, priced at CA $1,482 found 18 hours ago
Delta
Mon, Nov 9 - Tue, Nov 24
IAD
Washington
BKK
Bangkok
CA $1,492 Roundtrip, found 2 days ago
CA $1,492
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Nov 9 from Washington to Bangkok, returning Tue, Nov 24, priced at CA $1,492 found 2 days ago
EVA Airways
Mon, Nov 9 - Tue, Nov 24
IAD
Washington
BKK
Bangkok
CA $1,523 Roundtrip, found 2 days ago
CA $1,523
Roundtrip
found 2 days ago
Select EVA Airways flight, departing Mon, Nov 9 from Washington to Bangkok, returning Tue, Nov 24, priced at CA $1,523 found 2 days ago

Alternative airports near Bangkok

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

Select flight to Don Mueang Intl. DMK. Closest option available. Average driving time to city centre is 19 minutes. Flights from CA $1,460
DMK
Don Mueang Intl.
Closest
Average driving time to city centre19 min
Flights from CA $1,460

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

September is typically the cheapest month to fly

From CA $1,190 - CA $1,620 per traveller.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) cost?
You can find cheap one-way flights from CA $586 and cheap return flights from CA $1,271 IAD to BKK with Expedia. Return flights often range between CA$3735 and CA$11459. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when IAD to BKK ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The cheapest months to fly from IAD to BKK are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
Enter IAD to BKK and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
Ethiopian Airlines is one of the cheapest airlines offering connecting flights from Washington Dulles Intl. (IAD) to Suvarnabhumi Intl. (BKK), with return tickets starting from around CA$1838 for flights that can be booked for departure within the next year. These flights typically include a layover in Gnassingbe Eyadema Intl. (LFW). Prices are per adult, economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
There are approximately 79 connecting flights per day from Washington Dulles Intl. (IAD) to Suvarnabhumi Intl. (BKK). Some common connection points include Heathrow (LHR), Pearson Intl. (YYZ), and Frankfurt Intl. (FRA).
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The earliest flight from Washington Dulles International Airport (IAD) to Suvarnabhumi International Airport (BKK) typically departs around 12:55 AM local time. This flight is operated by EVA Airways. This is a seasonal service, active only in November. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
You'll typically find the most flights from Washington Dulles Intl. (IAD) to Suvarnabhumi Intl. (BKK) on a Wednesday, with around 72 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United, Qatar Airways, and Alaska Airlines. Looking at the week, flight options are fairly consistent, with Wednesday offering only slightly more flights than other days.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) are in the morning, from 9am to 12pm. Many major carriers, including Emirates, Qatar Airways and Korean Air, offer flights during this window. Many travelers prefer this because it allows for an early start to their journey, often leading to a daytime arrival at their destination.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
There are no nonstop flights from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.). The journey covers a distance of approximately 14,159 kilometres. Flights with one stop typically take around 23 hours 18 minutes. If your flight has two or more stops, your travel time will be longer, usually around 25 hours. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
You can fly business class or first class between IAD and BKK. Airlines that offer business class service on this route include:
  • Qatar Airways
  • Korean Air
  • KLM
  • Emirates
  • Alaska Airlines
  • PSA Airlines
  • British Airways
  • Air Canada
  • Mesa Airlines
  • Swiss International Air Lines
  • TAP Portugal
  • Etihad Airways
  • Brussels Airlines
  • Air France
  • Iberia
  • Lufthansa
  • Delta
  • Icelandair
  • Aer Lingus
  • ITA Airways
  • SAS
  • Virgin Atlantic
  • Ethiopian Airlines
  • Saudi Arabian Airlines
  • Turkish Airlines
  • Royal Jordanian
  • Republic Airlines
  • Air China
  • United
  • All Nippon Airways
  • Austrian Airlines
  • EVA Airways
  • American Airlines
First class cabins are available on:
  • Emirates
  • British Airways
  • Swiss International Air Lines
  • Lufthansa
  • United
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Bangkok (BKK) from Washington, DC (IAD)?
If you're planning to travel to Bangkok from Washington Dulles Intl. (IAD), you can fly directly into Suvarnabhumi Intl. (BKK). Some flights may connect through major hubs like Heathrow (LHR), Zürich (ZRH), or O'Hare Intl. (ORD) before reaching Bangkok. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Austrian Airlines, British Airways, Delta, EVA Airways, Emirates, Ethiopian Airlines, Etihad Airways, ITA Airways, IndiGo, JetBlue Airways, Korean Air, Lufthansa, Qatar Airways, Swiss International Air Lines, Thai Airways International, Turkish Airlines
Roundtrip price
CA $1,270
Distance
14075 km

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Chantilly to Bangkok Flights

The easy way to book your flights from Washington to Bangkok 

With Expedia, it’s simple to find and book flights to Bangkok from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Suvarnabhumi Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Bangkok today, tomorrow, or this week.  

 

Save dollars with cheap flights from Washington Dulles Intl., IAD to Suvarnabhumi Intl., BKK 

Sort your search results by price to find great deals on your flight from Washington to Bangkok—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Bangkok from Washington currently is just CA $1,271 rising to CA $1,523.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Bangkok  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Bangkok from Washington 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Bangkok with Expedia today.

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