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$412+ Cheap flights from Dulles Intl (IAD) to Thailand

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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
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Cheap flight deals from Dulles Intl to Thailand

Keep the following information in mind while searching for Dulles Intl to Thailand flight deals. Data was last updated October 13, 2025.

Round-trip from

$843
(Vliegwinkel)

One-way from

$412
(Yatra.com)

Popular in

December

Cheapest in

September

Average price

$1,038
From Washington, D.C. Dulles Intl to Thailand
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One-way flight from Washington, D.C. Dulles Intl to Thailand
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Highest demand for flights based on searches. 13% potential increase in price ($188 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Dulles Intl to Thailand

Cheapest flights from Dulles Intl to Thailand
Explore the most affordable flight options available from Dulles Intl to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 13, 2025.

This FlightHub deal was found by Cheapflights users on 10/12. 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.
Mon 11/109:10 pmIAD - BKK
1 stop32h 50mEtihad Airways
Mon 12/810:00 amBKK - IAD
2 stops65h 30mEtihad Airways
Deal found 10/12$845
This FlightHub deal was found by Cheapflights users on 10/12. 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.
Tue 10/2810:10 pmIAD - BKK
1 stop32h 50mEtihad Airways
Mon 3/309:55 amBKK - IAD
2 stops65h 15mEtihad Airways
Deal found 10/12$846
This iWofly deal was found by Cheapflights users on 10/11. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:10 pmIAD - BKK
2 stops50h 10mEtihad Airways
Sun 11/98:55 amBKK - IAD
1 stop42h 35mEtihad Airways
Deal found 10/11$848
This KAYAK deal was found by Cheapflights users on 10/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:10 pmIAD - BKK
2 stops38h 20mEtihad Airways
Wed 11/197:35 amBKK - IAD
2 stops67h 55mEtihad Airways
Deal found 10/12$849
This oojo deal was found by Cheapflights users on 10/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/11:30 pmIAD - BKK
1 stop26h 50mTurkish Airlines
Sun 12/145:50 amBKK - IAD
1 stop41h 55mTurkish Airlines
Deal found 10/13$850
This Kissandfly.com deal was found by Cheapflights users on 10/11. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/248:05 pmIAD - BKK
1 stop29h 00mQatar Airways
Mon 12/83:00 amBKK - IAD
1 stop24h 55mQatar Airways
Deal found 10/11$851
This oojo deal was found by Cheapflights users on 10/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:05 pmIAD - BKK
1 stop29h 00mQatar Airways
Sun 12/148:30 pmBKK - IAD
1 stop31h 25mQatar Airways
Deal found 10/12$852
This oojo deal was found by Cheapflights users on 10/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/148:05 pmIAD - BKK
1 stop34h 20mQatar Airways
Tue 12/28:30 pmBKK - IAD
1 stop23h 50mQatar Airways
Deal found 10/12$854
This KAYAK deal was found by Cheapflights users on 10/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:10 pmIAD - BKK
2 stops38h 20mEtihad Airways
Mon 11/177:35 amBKK - IAD
2 stops43h 55mEtihad Airways
Deal found 10/12$855
This FlightHub deal was found by Cheapflights users on 10/13. 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.
Fri 11/288:05 pmIAD - BKK
1 stop22h 35mQatar Airways
Thu 12/188:30 pmBKK - IAD
1 stop23h 50mQatar Airways
Deal found 10/13$859
This KAYAK deal was found by Cheapflights users on 10/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:10 pmIAD - BKK
1 stop32h 50mEtihad Airways
Sun 3/299:55 amBKK - IAD
2 stops65h 15mEtihad Airways
Deal found 10/12$860
This IEagle deal was found by Cheapflights users on 10/11. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:05 pmIAD - BKK
1 stop35h 20mQatar Airways
Sat 12/137:50 pmBKK - IAD
1 stop24h 30mQatar Airways
Deal found 10/11$861

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Thailand 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 October 13, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Thailand that are best for you.

Fly from

Dulles Intl

Fly to

Thailand

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 1/12

9:10 pm-7:10 am

1 stop22h 00m

Bangkok Suvarnabhumi

Wed 1/28

2:55 am-3:30 pm

1 stop24h 35m

$857

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Tue 10/28

10:15 pm-9:45 pm

2 stops36h 30m

Phuket City

Thu 11/13

10:50 pm-7:20 pm

2 stops32h 30m

$916

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 12/25

11:10 am-5:10 am

1 stop30h 00m

Bangkok Suvarnabhumi

Mon 1/5

9:10 am-3:40 pm

1 stop42h 30m

$919

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/8

9:10 pm-5:55 am

1 stop20h 45m

Bangkok Suvarnabhumi

Tue 2/3

2:55 am-3:30 pm

1 stop24h 35m

$921

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 1/5

9:10 pm-7:10 am

1 stop22h 00m

Bangkok Suvarnabhumi

Thu 2/5

2:55 am-3:30 pm

1 stop24h 35m

$921

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 11/27

7:18 am-12:55 am

2 stops29h 37m

Bangkok Suvarnabhumi

Tue 12/9

12:55 am-9:50 am

1 stop20h 55m

$922

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 11/10

6:03 am-9:30 pm

2 stops27h 27m

Bangkok Suvarnabhumi

Mon 12/22

11:15 pm-4:11 pm

2 stops28h 56m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 11/10

10:10 pm-11:25 am

3 stops49h 15m

Bangkok Suvarnabhumi

Wed 11/19

4:55 pm-6:48 am

2 stops25h 53m

$948

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 3/16

2:12 pm-11:25 am

3 stops34h 13m

Bangkok Suvarnabhumi

Thu 3/26

4:55 pm-11:44 am

3 stops29h 49m

$948

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 1/13

6:10 am-12:45 am

2 stops30h 35m

Bangkok Suvarnabhumi

Thu 1/29

9:40 am-11:35 pm

2 stops25h 55m

$953

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/11

Showing 1-10 of 60 results
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Best time to book a flight from Dulles Intl to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Thailand

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

Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $616). Flying from Washington, D.C. Dulles Intl Airport to Thailand in July is currently the most expensive (average of $919). 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 IAD to TH?

Find hourly flight availability from Dulles Intl to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Thailand in the evening. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Thailand?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Thailand. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Thailand flight should consider departing on Monday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated October 13, 2025.
Peruse reviews from past customers who have flown with Korean Air, Emirates, and Qatar Airways from Washington, D.C. Dulles Intl Airport to Thailand to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,149 reviews

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Comfort

8.3

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
1,149 reviews
Korean Air
8.4
Very good
1,149 reviews

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Comfort

8.3

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
8.1
Very good
3,375 reviews
Korean Air
8.4
Very good
1,149 reviews

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Comfort

8.3

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.
Qatar Airways
7.4
Good
3,647 reviews
Korean Air
8.4
Very good
1,149 reviews

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Comfort

8.3

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.
Etihad Airways
7.4
Good
1,279 reviews
Korean Air
8.4
Very good
1,149 reviews

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Comfort

8.3

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.
Turkish Airlines
7.3
Good
4,007 reviews
Korean Air
8.4
Very good
1,149 reviews

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Comfort

8.3

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

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Thailand?

    For as low as $857, Etihad Airways can have you in Thailand from Washington, D.C. Dulles Intl Airport in 22h. Airlines will cover a distance of 8792 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $412 on IndiGo. Other airlines that offer cheap prices include STARLUX Airlines from $485 and Qatar Airways from $491 one-way.

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

    While some choose either Washington, D.C. Dulles Intl - Bangkok Don Mueang Intl or Washington, D.C. Dulles Intl - Phuket City, Washington, D.C. Dulles Intl - Bangkok Suvarnabhumi is the most popular route from Washington, D.C. Dulles Intl Airport to Thailand.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Thailand 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 Washington, D.C. Dulles Intl Airport to Thailand?

    Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $616). Flying from Washington, D.C. Dulles Intl Airport to Thailand in July is currently the most expensive (average of $919). 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

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Alternative routes for Dulles Intl to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Haneda flights
Dulles Intl to Suvarnabhumi flights
Dulles Intl to Narita flights
Reagan-National to Narita flights
Baltimore to Narita flights
Baltimore to Suvarnabhumi flights
Reagan-National to Haneda flights
Reagan-National to Suvarnabhumi flights
Dulles Intl to New Delhi flights
Dulles Intl to Incheon Intl flights
Baltimore to Haneda flights
Dulles Intl to Ho Chi Minh City flights
Dulles Intl to Mumbai flights
Dulles Intl to Hyderabad flights
Reagan-National to Hyderabad flights
Baltimore to Hyderabad flights
Reagan-National to New Delhi flights
Dulles Intl to Don Mueang Intl flights
Dulles Intl to Manila flights
Dulles Intl to Bangalore flights
Reagan-National to Mumbai flights
Reagan-National to Bangalore flights
Baltimore to Mumbai flights
Baltimore to New Delhi flights
Baltimore to Bangalore flights
Dulles Intl to Lahore flights
Dulles Intl to Ahmedabad flights
Reagan-National to Manila flights
Dulles Intl to Islamabad flights
Baltimore to Manila flights
Dulles Intl to Taiwan Taoyuan Intl flights
Reagan-National to Incheon Intl flights
Reagan-National to Chennai flights
Reagan-National to Ahmedabad flights
Dulles Intl to Chennai flights
Reagan-National to Ho Chi Minh City flights
Baltimore to Incheon Intl flights
Dulles Intl to Hongqiao Intl flights
Baltimore to Chennai flights
Baltimore to Ho Chi Minh City flights
Dulles Intl to Dhaka flights
Reagan-National to Taiwan Taoyuan Intl flights
Dulles Intl to Hong Kong flights
Dulles Intl to Gimpo Intl flights
Baltimore to Ahmedabad flights
Dulles Intl to Capital flights
Dulles Intl to Soekarno-Hatta Intl flights
Baltimore to Taiwan Taoyuan Intl flights
Dulles Intl to Karachi flights
Dulles Intl to Pu Dong flights

Top 10 airlines flying from Dulles Intl to Thailand

Discover the top 10 airlines that operate flights from Dulles Intl to Thailand. 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 October 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$866FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$700Average$962FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$754Average$1,486FlexibilityNo cancel feeOn-time81%
DeltaCheapest$798Average$1,133FlexibilityNo cancel feeOn-timeN/A
SAUDIACheapest$834Average$945FlexibilityNo cancel feeOn-time86%
Etihad AirwaysCheapest$848Average$1,115FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$864Average$1,294FlexibilityNo cancel feeOn-time68%
ANACheapest$895Average$994FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$900Average$1,241FlexibilityNo cancel feeOn-time62%
Turkish AirlinesCheapest$901Average$1,104FlexibilityNo cancel feeOn-time77%

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