Cheap flights from Washington, D.C. to Bangkok from $394
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Bangkok departing on 10/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Not ready to book? to track prices.Korean Air flights from Washington, D.C. to Bangkok Suvarnabhumi Airport
Our best Korean Air deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
Delta flights from Washington, D.C. to Bangkok Suvarnabhumi Airport
Our best Delta deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
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Use the filters below to find and compare flights from Washington, D.C. to Bangkok Suvarnabhumi Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Tue 1/12
2:25 pm-5:45 pm
1 stop39h 20m
Bangkok Suvarnabhumi
Thu 1/28
7:55 pm-9:00 am
1 stop25h 05m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Tue 1/12
2:25 pm-5:45 pm
1 stop39h 20m
Bangkok Suvarnabhumi
Wed 1/27
7:55 pm-9:00 am
1 stop25h 05m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Sun 11/1
11:35 pm-9:25 pm
1 stop33h 50m
Bangkok Suvarnabhumi
Thu 11/12
7:55 pm-11:43 pm
2 stops39h 48m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Thu 11/19
10:00 am-12:30 pm
1 stop38h 30m
Bangkok Suvarnabhumi
Sat 11/28
1:35 am-8:00 am
2 stops42h 25m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Sat 1/16
7:05 am-12:20 am
2 stops29h 15m
Bangkok Suvarnabhumi
Tue 2/2
11:15 pm-11:33 pm
2 stops36h 18m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Mon 2/15
6:10 am-12:20 am
2 stops30h 10m
Bangkok Suvarnabhumi
Sat 2/27
9:40 pm-11:51 pm
2 stops38h 11m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Sat 2/13
11:50 am-11:05 pm
1 stop23h 15m
Bangkok Suvarnabhumi
Sun 2/21
11:15 pm-5:30 pm
2 stops30h 15m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Thu 1/28
11:50 am-11:05 pm
1 stop23h 15m
Bangkok Suvarnabhumi
Fri 2/12
9:40 pm-5:30 pm
2 stops31h 50m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Thu 4/1
9:00 pm-1:25 pm
1 stop29h 25m
Bangkok Suvarnabhumi
Sun 4/11
2:30 am-3:40 pm
1 stop24h 10m
Washington, D.C.Bangkok
IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi
IADBKK
Washington, D.C. Dulles Intl
Mon 4/5
9:00 pm-1:25 pm
1 stop29h 25m
Bangkok Suvarnabhumi
Sun 4/11
2:30 am-3:40 pm
1 stop24h 10m
See travel insights to Bangkok from
How to get the cheapest flight ticket from Washington, D.C. to Bangkok Suvarnabhumi Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Washington, D.C. and Bangkok Suvarnabhumi Airport?
Prices are currently low for flights on this route.
Typical prices usually range from $958 to $1,264.The lowest price recently found on this route was $883.
What is the cheapest month to fly to Bangkok Suvarnabhumi Airport?
The month of September is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from Washington, D.C., with most prices found around $949. The month of February is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Washington, D.C. averaging around $989.
How far in advance should I book a flight from Washington, D.C. to Bangkok Suvarnabhumi Airport?
You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $1,125 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from Washington, D.C. for as low as $996 on momondo.
Can stopping save me money on Washington, D.C. to Bangkok Suvarnabhumi Airport flights?
You could potentially save up to 9% on your flight if you consider stops on a Washington, D.C. to Bangkok Suvarnabhumi Airport flight.
How have Washington, D.C. to Bangkok Suvarnabhumi Airport flight prices changed over time?
As of October 2026, prices for Washington, D.C. to Bangkok Suvarnabhumi Airport flights are approximately 27% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to Bangkok Suvarnabhumi?
Korean Air, Etihad Airways, and Delta are the most popular carriers operating from Washington, D.C. to Bangkok Suvarnabhumi
What airlines fly to Bangkok Suvarnabhumi Airport?
Qatar Airways, Etihad Airways and United Airlines are the top three most popular airlines that fly to Bangkok Suvarnabhumi Airport from Washington, D.C. according to our data. Qatar Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Bangkok Suvarnabhumi Airport. Keep in mind that there are 15 different airlines that fly to Bangkok Suvarnabhumi Airport on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Washington, D.C. and Bangkok Suvarnabhumi Airport?
Abu Dhabi (AUH) was the most common stop: 32% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Washington, D.C. to Bangkok Suvarnabhumi Airport?
Flights via Incheon (ICN) offer the lowest average round-trip price of $987.
Which layover airport has the shortest travel time from Washington, D.C. to Bangkok Suvarnabhumi Airport?
Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 20h 38m.
Which layover airport has the shortest connection time from Washington, D.C. to Bangkok Suvarnabhumi Airport?
Dubai (DXB) has the shortest average layover time for this route: 1h 22m.
When to book flights from Washington, D.C. to Bangkok Suvarnabhumi Airport
Cheap Washington, D.C. to Bangkok Suvarnabhumi Airport (WAS to BKK) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Bangkok Suvarnabhumi Airport
Frequently asked questions about flying from Washington, D.C. to Bangkok Suvarnabhumi Airport
How far is Washington, D.C. to Bangkok Suvarnabhumi by plane?
Bangkok Suvarnabhumi is 8793.6 mi away from Washington, D.C.. A reasonable flight in good conditions will take 21h 35m.
When did momondo last update prices for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport?
Prices for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport?
There are 15 operators available for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport as of October 2026.
How old do you have to be to fly from Washington, D.C. to Bangkok Suvarnabhumi Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Bangkok Suvarnabhumi Airport.
What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?
The travel and health documents you'll need for your trip to Bangkok Suvarnabhumi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok Suvarnabhumi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Bangkok Suvarnabhumi Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Bangkok Suvarnabhumi Airport is Etihad Airways (18% of total bookings). The next most popular airlines are Qatar Airways (15%), Delta (10%), and JetBlue (8%).
Best airlines flying from Washington, D.C. to Bangkok Suvarnabhumi Airport
Compare and see reviews for airlines that fly from Washington, D.C. to Bangkok Suvarnabhumi Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $730 | Free Cancellation | Rating 8.1 108 reviews | |||
| PriceFrom $787 | Free Cancellation | Rating 7.3 1,541 reviews | |||
| PriceFrom $813 | Free Cancellation | Rating 7.3 3,724 reviews | |||
| PriceFrom $833 | Free Cancellation | Rating 7.4 4,455 reviews | |||
| PriceFrom $845 | Free Cancellation | Rating 7.1 11,748 reviews | |||
| PriceFrom $912 | Free Cancellation | Rating 8.4 1,217 reviews | |||
| PriceFrom $922 | Free Cancellation | Rating 7.1 3,048 reviews | |||
| PriceFrom $936 | Free Cancellation | Rating 7.4 10,328 reviews | |||
| PriceFrom $945 | Free Cancellation | Rating 8.3 1,321 reviews | |||
| PriceFrom $977 | Free Cancellation | Rating 7.8 8,649 reviews |
Traveling to a place near Bangkok?
Book flights to Bangkok if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Bangkok?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Bangkok from Washington, D.C..
Can I find flights from Washington, D.C. to Bangkok with flexible booking policies on momondo?
momondo does allow users to show only those flights to Bangkok from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Washington, D.C. to Bangkok?
momondo helps you find the best flight between Washington, D.C. and Bangkok by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Washington, D.C. to Bangkok right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Washington, D.C. to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.