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Cheap flights from Thailand to Washington, D.C. from $405

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Thailand to Washington, D.C. 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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Find the cheapest flights from Thailand to Washington, D.C.

Recent round-trip flight deals from Thailand to Washington, D.C.

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:50 am - 5:55 amCNX-IAD
30h 05m2 stops
Multiple Airlines Logo
7:00 am - 10:25 amIAD-CNX
40h 25m2 stops
$1,005Multiple Airlines
Find Deal
Thu, Mar 5 - Fri, May 1
Multiple Airlines Logo
5:05 pm - 3:30 pmBKK-IAD
34h 25m2 stops
Multiple Airlines Logo
8:05 pm - 6:15 amIAD-BKK
22h 10m1 stop
$1,055Multiple Airlines
Find Deal
Sat, Nov 15 - Tue, Jan 13
Air Canada Logo
8:15 am - 11:39 amBKK-IAD
39h 24m2 stops
Air Canada Logo
9:00 am - 10:30 pmIAD-BKK
25h 30m2 stops
$1,069Air Canada
Find Deal
Mon, Nov 10 - Sat, Jan 10
Air Canada Logo
8:15 am - 8:26 pmBKK-IAD
24h 11m2 stops
Air Canada Logo
9:00 am - 10:30 pmIAD-BKK
25h 30m2 stops
$1,085Air Canada
Find Deal
Wed, Nov 12 - Thu, Jan 8
United Airlines Logo
4:55 pm - 11:49 amBKK-IAD
30h 54m3 stops
United Airlines Logo
6:45 am - 11:25 amIAD-BKK
40h 40m2 stops
$1,101United Airlines
Find Deal
Wed, Nov 26 - Wed, Dec 3
United Airlines Logo
3:40 pm - 7:04 pmBKK-IAD
38h 24m3 stops
United Airlines Logo
6:00 am - 9:45 amIAD-BKK
40h 45m2 stops
$1,107United Airlines
Find Deal
Mon, Mar 30 - Thu, Apr 30
Qatar Airways Logo
3:00 am - 3:55 pmBKK-IAD
24h 55m1 stop
Qatar Airways Logo
8:05 pm - 6:15 amIAD-BKK
22h 10m1 stop
$1,157Qatar Airways
Find Deal
Sun, Nov 9 - Mon, Nov 17
Qatar Airways Logo
2:00 am - 3:55 pmBKK-IAD
25h 55m1 stop
Qatar Airways Logo
9:00 pm - 6:15 amIAD-BKK
22h 15m1 stop
$1,158Qatar Airways
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Wed, Mar 4 - Wed, Apr 15
Korean Air Logo
12:15 am - 9:50 amCNX-IAD
21h 35m1 stop
Korean Air Logo
11:50 am - 10:55 pmIAD-CNX
23h 05m1 stop
$3,249Korean Air
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Tue, Feb 17 - Sun, Feb 22
Korean Air Logo
12:15 am - 9:50 amCNX-IAD
21h 35m1 stop
Korean Air Logo
11:50 am - 10:55 pmIAD-CNX
23h 05m1 stop
$3,250Korean Air
Find Deal
Tue, Feb 17 - Sun, Feb 22

Air Canada flights from Thailand to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Thailand to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
Nov 10
BKK8:15 amBangkok Suvarnabhumi
39h 24m
2 stops
IAD11:39 amWashington, D.C. Dulles Intl
Jan 10
IAD9:00 amWashington, D.C. Dulles Intl
25h 30m
2 stops
BKK10:30 pmBangkok Suvarnabhumi
$1,069
Find similar
Air Canada
Nov 12
BKK8:15 amBangkok Suvarnabhumi
24h 11m
2 stops
IAD8:26 pmWashington, D.C. Dulles Intl
Jan 8
IAD9:00 amWashington, D.C. Dulles Intl
25h 30m
2 stops
BKK10:30 pmBangkok Suvarnabhumi
$1,085
Find similar
Air Canada
Nov 19
BKK8:15 amBangkok Suvarnabhumi
25h 07m
2 stops
IAD9:22 pmWashington, D.C. Dulles Intl
Nov 29
IAD1:20 pmWashington, D.C. Dulles Intl
53h 10m
2 stops
BKK6:30 amBangkok Suvarnabhumi
$1,097
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SAUDIA flights from Thailand to Washington, D.C. Dulles Intl Airport

Our best SAUDIA deals on Thailand to Washington, D.C. Dulles Intl Airport flight tickets
SAUDIA
Nov 12
BKK3:20 pmBangkok Suvarnabhumi
35h 25m
1 stop
IAD2:45 pmWashington, D.C. Dulles Intl
Jan 10
IAD6:10 pmWashington, D.C. Dulles Intl
41h 20m
1 stop
BKK11:30 pmBangkok Suvarnabhumi
$1,071
Find similar
SAUDIA
Nov 27
BKK3:20 pmBangkok Suvarnabhumi
34h 45m
1 stop
IAD2:05 pmWashington, D.C. Dulles Intl
Nov 29
IAD6:10 pmWashington, D.C. Dulles Intl
31h 30m
1 stop
BKK1:40 pmBangkok Suvarnabhumi
$1,117
Find similar
SAUDIA
Nov 17
BKK1:15 amBangkok Suvarnabhumi
25h 30m
1 stop
IAD2:45 pmWashington, D.C. Dulles Intl
Nov 29
IAD6:10 pmWashington, D.C. Dulles Intl
31h 30m
1 stop
BKK1:40 pmBangkok Suvarnabhumi
$1,149
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Thailand to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from Thailand to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 3/5

11:50 am-5:55 am

2 stops30h 05m

Washington, D.C. Dulles Intl

Fri 5/1

7:00 am-10:25 am

2 stops40h 25m

$1,005

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 11/15

5:05 pm-3:30 pm

2 stops34h 25m

Washington, D.C. Dulles Intl

Tue 1/13

8:05 pm-6:15 am

1 stop22h 10m

$1,055

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 11/10

8:15 am-11:39 am

2 stops39h 24m

Washington, D.C. Dulles Intl

Sat 1/10

9:00 am-10:30 pm

2 stops25h 30m

$1,069

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 11/12

8:15 am-8:26 pm

2 stops24h 11m

Washington, D.C. Dulles Intl

Thu 1/8

9:00 am-10:30 pm

2 stops25h 30m

$1,085

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 11/26

4:55 pm-11:49 am

3 stops30h 54m

Washington, D.C. Dulles Intl

Wed 12/3

6:45 am-11:25 am

2 stops40h 40m

$1,101

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 3/30

3:40 pm-7:04 pm

3 stops38h 24m

Washington, D.C. Dulles Intl

Thu 4/30

6:00 am-9:45 am

2 stops40h 45m

$1,107

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 11/9

3:00 am-3:55 pm

1 stop24h 55m

Washington, D.C. Dulles Intl

Mon 11/17

8:05 pm-6:15 am

1 stop22h 10m

$1,157

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 3/4

2:00 am-3:55 pm

1 stop25h 55m

Washington, D.C. Dulles Intl

Wed 4/15

9:00 pm-6:15 am

1 stop22h 15m

$1,158

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 2/17

12:15 am-9:50 am

1 stop21h 35m

Washington, D.C. Dulles Intl

Sun 2/22

11:50 am-10:55 pm

1 stop23h 05m

$3,249

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 2/17

12:15 am-9:50 am

1 stop21h 35m

Washington, D.C. Dulles Intl

Sun 2/22

11:50 am-10:55 pm

1 stop23h 05m

$3,250

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Thailand to Washington, D.C. Dulles Intl 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 cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, July is the cheapest month to fly from Thailand to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,033. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of July, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,044.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Sunday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $1,053. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Thailand to Washington, D.C. Dulles Intl Airport for around $1,303.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Thailand in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,134 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,234 on average. Flights to Washington, D.C. Dulles Intl Airport from Thailand in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Thailand when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $1,213 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Thailand for as low as $1,092 on momondo.

Can stopping save me money on Thailand to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 13% on your flight if you consider stops on a Thailand to Washington, D.C. Dulles Intl Airport flight.

Cheap Thailand to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Thailand to Washington, D.C. Dulles Intl Airport

Direct flights

None
There are no direct flights from Thailand to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Thailand to Washington, D.C. Dulles Intl Airport.
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  • When did momondo last update prices for flights from Thailand to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Thailand to Washington, D.C. Dulles Intl Airport are updated daily.

  • How many operators does momondo search for flights from Thailand to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Thailand to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Thailand to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Thailand to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $992Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
ANAPriceFrom $1,011Free CancellationRating
8.4
984 reviews
Search ANA flights
Korean AirPriceFrom $1,033Free CancellationRating
8.4
1,149 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $1,143Free CancellationRating
7.4
3,649 reviews
Search Qatar Airways flights
EmiratesPriceFrom $1,371Free CancellationRating
8.1
3,375 reviews
Search Emirates flights
American AirlinesPriceFrom $1,401Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Fairfax
Reston
Gaithersburg
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Thailand to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Thailand to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Thailand to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Thailand which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Thailand to Washington, D.C.?

momondo provides multiple filters to help you find the best flight to Washington, D.C. from Thailand. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Thailand to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from Thailand are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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