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Dulles Intl

$574+ Cheap flights from Thailand to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — IAD
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
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Cheap flight deals from Thailand to Dulles Intl

Keep the following information in mind while searching for Thailand to Dulles Intl flight deals. Data was last updated April 1, 2025.

Round-trip from

$983
(SAUDIA)

One-way from

$574
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$1,175
From Thailand to Washington, D.C. Dulles Intl
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One-way flight from Thailand to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 8% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Thailand to Dulles Intl

Cheapest flights from Thailand to Dulles Intl
Explore the most affordable flight options available from Thailand to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.

This SAUDIA deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SAUDIA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/203:25 pmBKK - IAD
1 stop59h 20mSAUDIA
Tue 7/226:50 pmIAD - BKK
1 stop66h 20mSAUDIA
Deal found 3/31$983
This China Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/221:20 pmBKK - IAD
2 stops29h 16mMultiple Airlines
Mon 6/26:15 pmIAD - BKK
2 stops35h 05mMultiple Airlines
Deal found 3/30$1,024
This SWISS deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1512:50 pmBKK - IAD
1 stop37h 25mSWISS
Thu 5/228:45 pmIAD - BKK
1 stop26h 00mSWISS
Deal found 3/31$1,048
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/207:00 amBKK - IAD
2 stops25h 20mUnited Airlines
Tue 7/228:35 amIAD - BKK
2 stops28h 20mUnited Airlines
Deal found 3/31$1,062
This Lufthansa deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/289:10 pmCNX - IAD
2 stops28h 25mMultiple Airlines
Wed 6/1110:20 pmIAD - CNX
2 stops35h 10mMultiple Airlines
Deal found 4/1$1,065
This Air Canada deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:35 amBKK - IAD
2 stops35h 00mAir Canada
Sat 11/293:55 pmIAD - BKK
2 stops50h 20mAir Canada
Deal found 3/31$1,170
This Austrian Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/71:10 pmBKK - IAD
2 stops60h 01mAustrian Airlines
Thu 4/175:25 pmIAD - BKK
1 stop34h 25mAustrian Airlines
Deal found 3/31$1,179
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/711:30 pmBKK - IAD
2 stops35h 58mDelta
Thu 4/177:25 amIAD - BKK
2 stops42h 50mDelta
Deal found 3/31$1,186
This FlightHub deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/223:50 pmBKK - IAD
2 stops38h 55mIndiGo
Tue 7/221:30 pmIAD - BKK
2 stops39h 40mIndiGo
Deal found 3/31$1,202
This Air China deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/191:30 amBKK - IAD
1 stop29h 00mAir China
Tue 7/2211:00 pmIAD - BKK
1 stop32h 10mAir China
Deal found 3/31$1,218
This Justfly.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/61:55 pmBKK - IAD
1 stop31h 10mANA
Sun 7/1312:20 pmIAD - BKK
1 stop29h 15mANA
Deal found 3/31$1,243
This Mytrip deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/179:20 pmDMK - IAD
2 stops29h 50mMultiple Airlines
Sun 9/1411:00 amIAD - DMK
2 stops30h 30mMultiple Airlines
Deal found 3/31$1,257

Cheapflights Fare Finder

Customize your flight search to find flights from Thailand to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated April 1, 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

Thailand

Fly to

Dulles Intl

Route

Depart

Return

Price

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 6/20

3:25 pm-3:45 pm

1 stop59h 20m

Washington, D.C. Dulles Intl

Tue 7/22

6:50 pm-12:10 am

1 stop66h 20m

$983

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/22

1:20 pm-7:36 am

2 stops29h 16m

Washington, D.C. Dulles Intl

Mon 6/2

6:15 pm-4:20 pm

2 stops35h 05m

$1,024

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/15

12:50 pm-3:15 pm

1 stop37h 25m

Washington, D.C. Dulles Intl

Thu 5/22

8:45 pm-9:45 am

1 stop26h 00m

$1,048

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 6/20

7:00 am-9:20 pm

2 stops25h 20m

Washington, D.C. Dulles Intl

Tue 7/22

8:35 am-11:55 pm

2 stops28h 20m

$1,062

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Wed 5/28

9:10 pm-2:35 pm

2 stops28h 25m

Washington, D.C. Dulles Intl

Wed 6/11

10:20 pm-8:30 pm

2 stops35h 10m

$1,065

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 6/22

3:50 pm-7:45 pm

2 stops38h 55m

Washington, D.C. Dulles Intl

Tue 7/22

1:30 pm-4:10 pm

2 stops39h 40m

$1,202

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 6/19

1:30 am-7:30 pm

1 stop29h 00m

Washington, D.C. Dulles Intl

Tue 7/22

11:00 pm-6:10 pm

1 stop32h 10m

$1,218

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 6/6

1:55 pm-10:05 am

1 stop31h 10m

Washington, D.C. Dulles Intl

Sun 7/13

12:20 pm-4:35 am

1 stop29h 15m

$1,243

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Sat 5/17

9:20 pm-4:10 pm

2 stops29h 50m

Washington, D.C. Dulles Intl

Sun 9/14

11:00 am-4:30 am

2 stops30h 30m

$1,257

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 6/12

2:35 am-11:44 pm

2 stops32h 09m

Washington, D.C. Dulles Intl

Sat 8/2

5:00 pm-9:45 pm

2 stops41h 45m

$1,275

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 44 results
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Best time to book a flight from Thailand to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Thailand with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Thailand to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Thailand to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Thailand to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TH to IAD?

Find hourly flight availability from Thailand to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2025.

When flying from Thailand to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated April 1, 2025.
Peruse reviews from past customers who have flown with Korean Air, ANA and Asiana Airlines from Thailand to Washington, D.C. to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,052 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,052 reviews
Korean Air
8.4
Very good
1,052 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.3
Very good
831 reviews
Korean Air
8.4
Very good
1,052 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
440 reviews
Korean Air
8.4
Very good
1,052 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,286 reviews
Korean Air
8.4
Very good
1,052 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Emirates
8.0
Very good
3,192 reviews
Korean Air
8.4
Very good
1,052 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Thailand to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Thailand to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is IndiGo, with whom users have recently found tickets for as low as $580. However, be on the lookout for offers from SAUDIA and Air China, as they are both options that can get you from Thailand to Washington, D.C. Dulles Intl Airport for a low price.

  • What are the most popular routes from Thailand to Washington, D.C. Dulles Intl Airport?

    The most popular flight routes from Thailand to Washington, D.C. Dulles Intl Airport are Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl, Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl and Chiang Mai - Washington, D.C. Dulles Intl.

  • Can I find deals for flights from Thailand to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Thailand to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Thailand to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Dulles Intl.

  • Can I find deals for business class flights from Thailand to Dulles Intl?

    Yes. Cheapflights offers flight deals from Thailand to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Thailand to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Thailand to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Thailand?

Book flights to Thailand if you plan to visit one of these locations
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Alternative routes for Thailand to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Hyderabad to Dulles Intl flights
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Kansai Intl to Reagan-National flights
Chennai to Baltimore flights
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Suvarnabhumi to Baltimore flights
Incheon Intl to Baltimore flights
Haneda to Reagan-National flights
Manila to Reagan-National flights
Haneda to Baltimore flights
Kuala Lumpur Intl to Dulles Intl flights
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Kansai Intl to Baltimore flights
Hong Kong to Reagan-National flights
Hong Kong to Dulles Intl flights
Suvarnabhumi to Reagan-National flights
Taiwan Taoyuan Intl to Baltimore flights
Narita to Reagan-National flights
Manila to Baltimore flights
Hong Kong to Baltimore flights
Ahmedabad to Baltimore flights

Top 8 airlines flying from Thailand to Dulles Intl

Discover the top 8 airlines that operate flights from Thailand to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$854Average$1,306FlexibilityNo cancel feeOn-timeN/A
ANACheapest$919Average$1,084FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$936Average$1,091FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,043Average$1,212FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,203Average$1,536FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$1,287Average$1,448FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,340Average$1,511FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$1,351Average$1,401FlexibilityNo cancel feeOn-time71%
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