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$369+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
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 enero 15, 2026.

Round-trip from

$863
(FlightHub)

One-way from

$369
(EaseMyTrip)

Popular in

December

Cheapest in

September

Average price

$1,054
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. 7% potential increase in price ($91 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 January 2026
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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 enero 15, 2026.

This FlightHub deal was found by Cheapflights users on 1/15. 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.
lun. 2/92:35 pm
IAD
-
BKK
1 stop20h 50m
Etihad Airways
lun. 3/98:05 am
BKK
-
IAD
2 stops61h 00m
Etihad Airways
Deal found 1/15$863
This FlightHub deal was found by Cheapflights users on 1/14. 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.
lun. 2/162:35 pm
IAD
-
BKK
1 stop20h 50m
Etihad Airways
lun. 3/912:25 pm
BKK
-
IAD
2 stops56h 40m
Etihad Airways
Deal found 1/14$864
This oojo deal was found by Cheapflights users on 1/13. 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.
mié. 4/19:00 pm
IAD
-
BKK
1 stop29h 25m
Qatar Airways
mar. 4/217:40 pm
BKK
-
IAD
1 stop31h 25m
Qatar Airways
Deal found 1/13$868
This FlightHub deal was found by Cheapflights users on 1/13. 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.
mié. 10/143:35 pm
IAD
-
BKK
1 stop21h 15m
Etihad Airways
lun. 10/1912:25 pm
BKK
-
IAD
2 stops56h 20m
Etihad Airways
Deal found 1/13$869
This FlightHub deal was found by Cheapflights users on 1/14. 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.
jue. 3/123:35 pm
IAD
-
BKK
1 stop20h 50m
Etihad Airways
lun. 3/168:05 am
BKK
-
IAD
2 stops61h 00m
Etihad Airways
Deal found 1/14$870
This KAYAK deal was found by Cheapflights users on 1/12. 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.
jue. 4/303:35 pm
IAD
-
BKK
1 stop28h 10m
Etihad Airways
lun. 5/1812:25 pm
BKK
-
IAD
2 stops56h 20m
Etihad Airways
Deal found 1/12$871
This Gotogate deal was found by Cheapflights users on 1/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/12:35 pm
IAD
-
BKK
1 stop28h 35m
Etihad Airways
sáb. 3/145:40 pm
BKK
-
IAD
2 stops51h 25m
Etihad Airways
Deal found 1/13$872
This KAYAK deal was found by Cheapflights users on 1/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/73:35 pm
IAD
-
BKK
1 stop21h 15m
Etihad Airways
mar. 10/209:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 1/13$873
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/53:35 pm
IAD
-
BKK
1 stop21h 15m
Etihad Airways
jue. 5/143:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Deal found 1/12$874
This CheapOair deal was found by Cheapflights users on 1/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/169:15 pm
IAD
-
BKK
1 stop29h 50m
Turkish Airlines
mar. 3/3110:45 pm
BKK
-
IAD
1 stop32h 05m
Turkish Airlines
Deal found 1/13$875
This oojo deal was found by Cheapflights users on 1/13. 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.
dom. 4/263:35 pm
IAD
-
BKK
1 stop28h 10m
Etihad Airways
jue. 4/309:00 pm
BKK
-
IAD
1 stop23h 45m
Etihad Airways
Deal found 1/13$878
This oojo deal was found by Cheapflights users on 1/13. 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.
dom. 8/239:40 pm
IAD
-
BKK
1 stop30h 45m
Turkish Airlines
jue. 9/310:45 pm
BKK
-
IAD
1 stop32h 05m
Turkish Airlines
Deal found 1/13$879

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 enero 15, 2026.
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

mar. 3/17

6:01 am-12:55 am

2 stops31h 54m

Bangkok Suvarnabhumi

mar. 3/24

9:30 pm-11:49 pm

2 stops37h 19m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

mar. 3/24

12:50 pm-12:45 am

1 stop24h 55m

Bangkok Suvarnabhumi

mar. 4/14

9:40 pm-6:08 pm

2 stops31h 28m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

lun. 2/16

8:05 pm-7:25 pm

1 stop35h 20m

Bangkok Suvarnabhumi

lun. 3/2

8:15 am-3:55 pm

1 stop43h 40m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

mié. 4/29

7:00 am-11:40 pm

2 stops29h 40m

Bangkok Suvarnabhumi

lun. 5/18

9:40 pm-4:25 pm

2 stops29h 45m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

mar. 2/17

7:30 am-12:55 am

2 stops29h 25m

Bangkok Suvarnabhumi

dom. 3/1

12:55 am-8:45 pm

2 stops31h 50m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

lun. 1/26

7:05 am-12:55 am

2 stops29h 50m

Bangkok Suvarnabhumi

mar. 2/3

2:05 am-12:24 am

2 stops34h 19m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

lun. 2/16

7:05 am-9:30 pm

2 stops26h 25m

Bangkok Suvarnabhumi

dom. 3/1

12:55 am-11:10 pm

2 stops34h 15m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

lun. 5/4

12:15 pm-4:35 am

1 stop29h 20m

Bangkok Suvarnabhumi

jue. 5/14

7:00 am-9:23 pm

2 stops25h 23m

$933

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

jue. 4/30

6:00 am-11:40 pm

2 stops30h 40m

Bangkok Suvarnabhumi

dom. 5/17

11:30 pm-10:02 am

2 stops45h 32m

$936

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

mié. 2/18

6:00 pm-11:25 am

2 stops29h 25m

Bangkok Suvarnabhumi

dom. 3/1

4:55 pm-3:40 pm

2 stops34h 45m

$942

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

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, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $627). 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 enero 15, 2026.

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 morning. If you’re flexible enough to do this you can expect to save up to 10% on your trip compared to booking a flight in the afternoon.

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 March 30, 2025.

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 enero 15, 2026.
Peruse reviews from past customers who have flown with Korean Air, ANA, 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
1,187 reviews

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
1,187 reviews
Korean Air
8.4
Very good
1,187 reviews

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
8.4
Very good
1,073 reviews
Korean Air
8.4
Very good
1,187 reviews

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
3,715 reviews
Korean Air
8.4
Very good
1,187 reviews

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
7.3
Good
1,370 reviews
Korean Air
8.4
Very good
1,187 reviews

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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
4,175 reviews
Korean Air
8.4
Very good
1,187 reviews

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

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 $930, Delta can have you in Thailand from Washington, D.C. Dulles Intl Airport in 24h 55m. 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 $401 and Turkish Airlines from $423 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, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $627). 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 Narita flights
Dulles Intl to Suvarnabhumi flights
Reagan-National to Narita flights
Baltimore to Haneda flights
Reagan-National to Haneda flights
Baltimore to Narita flights
Dulles Intl to Incheon Intl flights
Dulles Intl to Hyderabad flights
Dulles Intl to New Delhi flights
Reagan-National to Hyderabad flights
Baltimore to Hyderabad flights
Dulles Intl to Ho Chi Minh City flights
Dulles Intl to Manila flights
Baltimore to Suvarnabhumi flights
Dulles Intl to Mumbai flights
Reagan-National to Suvarnabhumi flights
Reagan-National to New Delhi flights
Baltimore to New Delhi flights
Dulles Intl to Bangalore flights
Reagan-National to Mumbai flights
Reagan-National to Manila flights
Baltimore to Manila flights
Baltimore to Bangalore flights
Reagan-National to Bangalore flights
Reagan-National to Incheon Intl flights
Dulles Intl to Don Mueang Intl flights
Dulles Intl to Hongqiao Intl flights
Dulles Intl to Taiwan Taoyuan Intl flights
Baltimore to Mumbai flights
Baltimore to Incheon Intl flights
Dulles Intl to Islamabad flights
Dulles Intl to Gimpo Intl flights
Dulles Intl to Lahore flights
Dulles Intl to Capital flights
Dulles Intl to Ahmedabad flights
Dulles Intl to Pu Dong flights
Reagan-National to Hongqiao Intl flights
Dulles Intl to Hong Kong flights
Baltimore to Ho Chi Minh City flights
Reagan-National to Ho Chi Minh City flights
Reagan-National to Taiwan Taoyuan Intl flights
Dulles Intl to Chennai flights
Reagan-National to Hong Kong flights
Baltimore to Hongqiao Intl flights
Baltimore to Taiwan Taoyuan Intl flights
Dulles Intl to Denpasar flights
Reagan-National to Ahmedabad flights
Dulles Intl to Kathmandu flights
Baltimore 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 enero 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$783FlexibilityNo cancel feeOn-time67%
Air CanadaCheapest$597Average$1,651FlexibilityNo cancel feeOn-time67%
IndiGoCheapest$639Average$1,172FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$673Average$1,283FlexibilityNo cancel feeOn-time81%
Air IndiaCheapest$713Average$944FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$787Average$1,114FlexibilityNo cancel feeOn-time75%
DeltaCheapest$798Average$1,139FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$830Average$1,237FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$862Average$1,179FlexibilityNo cancel feeOn-time77%
ANACheapest$896Average$996FlexibilityNo cancel feeOn-time80%

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