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$460+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This oojo deal was found by Cheapflights users on 12/2. 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.
Tue 12/210:00 pmIAD - BKK
1 stop32h 05mAir China
Mon 2/211:50 pmBKK - IAD
1 stop30h 40mAir China
Deal found 12/2$875
This EaseMyTrip deal was found by Cheapflights users on 12/2. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:00 pmIAD - BKK
1 stop35h 30mAir China
Thu 1/2211:50 pmBKK - IAD
1 stop30h 40mAir China
Deal found 12/2$906
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/37:00 pmIAD - BKK
2 stops28h 25mUnited Airlines
Tue 3/34:55 pmBKK - IAD
2 stops26h 20mUnited Airlines
Deal found 12/3$944
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/412:45 pmIAD - BKK
3 stops34h 40mUnited Airlines
Thu 12/114:55 pmBKK - IAD
2 stops26h 36mUnited Airlines
Deal found 12/3$948
This oojo deal was found by Cheapflights users on 12/3. 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.
Wed 12/310:40 amIAD - BKK
1 stop20h 45mQatar Airways
Thu 3/52:15 pmBKK - IAD
2 stops37h 40mQatar Airways
Deal found 12/3$963
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Sun 12/286:30 amIAD - BKK
2 stops29h 50mUnited Airlines
Mon 1/59:10 amBKK - IAD
1 stop42h 30mUnited Airlines
Deal found 12/3$966
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/2610:05 pmIAD - BKK
2 stops49h 20mUnited Airlines
Mon 1/59:10 amBKK - IAD
1 stop42h 30mUnited Airlines
Deal found 12/3$978
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/312:20 pmIAD - BKK
1 stop28h 50mUnited Airlines
Sun 1/114:55 pmBKK - IAD
2 stops24h 29mUnited Airlines
Deal found 12/2$980
This Ovago deal was found by Cheapflights users on 12/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/310:40 amIAD - HKT
1 stop20h 15mQatar Airways
Wed 12/107:50 pmHKT - IAD
2 stops32h 05mQatar Airways
Deal found 12/3$983
This Expedia deal was found by Cheapflights users on 12/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:30 pmIAD - BKK
2 stops26h 40mMultiple Airlines
Mon 12/227:30 pmBKK - IAD
1 stop35h 00mMultiple Airlines
Deal found 12/3$989
This Expedia deal was found by Cheapflights users on 12/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:10 amIAD - HKT
2 stops34h 25mMultiple Airlines
Thu 12/115:20 pmHKT - IAD
2 stops27h 50mMultiple Airlines
Deal found 12/3$991
This KAYAK deal was found by Cheapflights users on 12/3. 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.
Wed 12/310:40 amIAD - HKT
1 stop20h 15mQatar Airways
Mon 12/810:30 pmHKT - IAD
2 stops29h 25mQatar Airways
Deal found 12/3$1,008

Find 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 December 4, 2025.

Round-trip from

$865
(Gotogate)

One-way from

$460
(CrystalTravel)

Popular in

December

Cheapest in

September

Average price

$1,752
From Washington, D.C. Dulles Intl to Thailand
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Thailand
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($158 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 4, 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

Tue 1/27

2:35 pm-11:25 pm

1 stop20h 50m

Bangkok Suvarnabhumi

Fri 2/6

7:35 pm-9:05 am

2 stops49h 30m

$880

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 3/1

8:05 pm-12:15 pm

1 stop28h 10m

Bangkok Suvarnabhumi

Fri 3/13

8:15 am-4:55 pm

1 stop43h 40m

$896

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/16

8:05 pm-7:25 pm

1 stop35h 20m

Bangkok Suvarnabhumi

Tue 2/24

8:30 pm-3:55 pm

1 stop31h 25m

$926

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 2/15

10:40 am-7:25 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Thu 2/26

9:05 am-8:20 am

1 stop35h 15m

$926

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/16

11:50 am-12:55 am

1 stop25h 05m

Bangkok Suvarnabhumi

Tue 2/24

9:40 am-7:09 pm

2 stops45h 29m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 1/19

7:00 am-12:45 am

2 stops29h 45m

Bangkok Suvarnabhumi

Mon 1/26

9:40 am-11:10 pm

2 stops25h 30m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 2/15

5:11 pm-12:55 am

2 stops43h 44m

Bangkok Suvarnabhumi

Sun 2/22

2:05 am-11:55 pm

2 stops33h 50m

$934

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 2/15

5:11 pm-12:55 am

2 stops43h 44m

Bangkok Suvarnabhumi

Wed 2/25

9:40 am-11:55 pm

2 stops26h 15m

$934

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 2/15

7:51 pm-12:55 am

2 stops41h 04m

Bangkok Suvarnabhumi

Tue 2/24

9:40 am-7:09 pm

2 stops45h 29m

$939

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 3/3

11:10 am-5:10 am

1 stop30h 00m

Bangkok Suvarnabhumi

Tue 3/10

4:55 pm-11:26 am

3 stops29h 31m

$944

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

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 $920). 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 December 4, 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 December 4, 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
1,179 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
1,179 reviews
Korean Air
8.4
Very good
1,179 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
3,430 reviews
Korean Air
8.4
Very good
1,179 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
3,678 reviews
Korean Air
8.4
Very good
1,179 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
1,329 reviews
Korean Air
8.4
Very good
1,179 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
4,077 reviews
Korean Air
8.4
Very good
1,179 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

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 $880, Etihad Airways can have you in Thailand from Washington, D.C. Dulles Intl Airport in 20h 50m. 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 $394 on Korean Air. Other airlines that offer cheap prices include Etihad Airways from $426 and Turkish Airlines from $427 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 $920). 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 Narita flights
Dulles Intl to Suvarnabhumi flights
Reagan-National to Narita flights
Reagan-National to Haneda flights
Baltimore to Haneda flights
Baltimore to Narita flights
Dulles Intl to Hyderabad flights
Dulles Intl to New Delhi flights
Dulles Intl to Incheon Intl flights
Reagan-National to Hyderabad flights
Baltimore to Hyderabad flights
Dulles Intl to Taiwan Taoyuan Intl flights
Baltimore to Suvarnabhumi flights
Dulles Intl to Mumbai flights
Dulles Intl to Ho Chi Minh City flights
Reagan-National to Suvarnabhumi flights
Reagan-National to New Delhi flights
Baltimore to New Delhi flights
Dulles Intl to Bangalore flights
Dulles Intl to Manila flights
Dulles Intl to Don Mueang Intl flights
Reagan-National to Bangalore flights
Baltimore to Bangalore flights
Reagan-National to Mumbai flights
Reagan-National to Taiwan Taoyuan Intl flights
Baltimore to Mumbai flights
Dulles Intl to Hongqiao Intl flights
Dulles Intl to Islamabad flights
Baltimore to Manila flights
Dulles Intl to Ahmedabad flights
Baltimore to Taiwan Taoyuan Intl flights
Dulles Intl to Sung Shan flights
Reagan-National to Manila flights
Dulles Intl to Dhaka flights
Dulles Intl to Chennai flights
Baltimore to Incheon Intl flights
Dulles Intl to Lahore flights
Reagan-National to Hongqiao Intl flights
Reagan-National to Incheon Intl flights
Dulles Intl to Gimpo Intl flights
Reagan-National to Ho Chi Minh City flights
Reagan-National to Ahmedabad flights
Baltimore to Ho Chi Minh City flights
Reagan-National to Chennai flights
Dulles Intl to Pu Dong flights
Baltimore to Chennai flights
Dulles Intl to Capital flights
Dulles Intl to Hong Kong flights
Dulles Intl to Karachi 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$804FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$702Average$924FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$743Average$1,406FlexibilityNo cancel feeOn-time81%
DeltaCheapest$798Average$1,135FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$827Average$1,111FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$837Average$1,276FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$875Average$1,119FlexibilityNo cancel feeOn-time77%
ANACheapest$895Average$992FlexibilityNo cancel feeOn-time80%
JetBlueCheapest$903Average$2,012FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,420FlexibilityNo cancel feeOn-time75%

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