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$580+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
may. 4 — may. 111
dom. 5/4
dom. 5/11
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 abril 29, 2025.

Round-trip from

$963
(oojo)

One-way from

$580
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,099
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. 9% potential increase in price ($127 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 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 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 abril 29, 2025.

This CrystalTravel deal was found by Cheapflights users on 4/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/239:00 pmIAD - BKK
1 stop28h 55mQatar Airways
lun. 9/292:30 amBKK - IAD
1 stop24h 10mQatar Airways
Deal found 4/29$962
This oojo deal was found by Cheapflights users on 4/29. 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. 10/110:05 pmIAD - BKK
1 stop22h 05mEtihad Airways
mar. 10/282:25 amBKK - IAD
1 stop25h 40mEtihad Airways
Deal found 4/29$963
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
sáb. 5/311:00 amIAD - HKT
1 stop21h 30mMultiple Airlines
sáb. 5/107:05 pmHKT - IAD
2 stops55h 55mMultiple Airlines
Deal found 4/28$990
This CrystalTravel deal was found by Cheapflights users on 4/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/199:25 pmIAD - HKT
1 stop30h 20mTurkish Airlines
jue. 11/2710:25 pmHKT - IAD
1 stop33h 05mTurkish Airlines
Deal found 4/29$999
This oojo deal was found by Cheapflights users on 4/29. 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.
jue. 9/1810:05 pmIAD - HKT
1 stop22h 35mEtihad Airways
dom. 9/289:10 amHKT - IAD
1 stop42h 00mEtihad Airways
Deal found 4/29$1,012
This Cathay Pacific deal was found by Cheapflights users on 4/29. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/216:04 pmIAD - BKK
2 stops30h 01mMultiple Airlines
lun. 9/83:00 pmBKK - IAD
2 stops27h 00mMultiple Airlines
Deal found 4/29$1,028
This oojo deal was found by Cheapflights users on 4/28. 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.
lun. 8/186:04 pmIAD - BKK
2 stops28h 56mCathay Pacific
mar. 8/2611:00 amBKK - IAD
2 stops35h 01mCathay Pacific
Deal found 4/28$1,035
This CrystalTravel deal was found by Cheapflights users on 4/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/41:30 pmIAD - BKK
1 stop33h 15mTurkish Airlines
mié. 7/1610:45 pmBKK - IAD
1 stop24h 00mTurkish Airlines
Deal found 4/29$1,045
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/161:30 pmIAD - BKK
2 stops38h 20mIndiGo
mié. 9/245:10 pmBKK - IAD
2 stops37h 35mIndiGo
Deal found 4/29$1,046
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/81:30 pmIAD - HKT
2 stops39h 15mIndiGo
jue. 9/111:30 pmHKT - IAD
2 stops41h 15mIndiGo
Deal found 4/29$1,073
This oojo deal was found by Cheapflights users on 4/29. 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. 9/1711:00 amIAD - HKT
1 stop20h 50mQatar Airways
lun. 9/222:45 pmHKT - IAD
2 stops35h 55mQatar Airways
Deal found 4/29$1,075
This FlightHub deal was found by Cheapflights users on 4/29. 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.
dom. 5/45:38 pmIAD - BKK
2 stops33h 42mSingapore Airlines
mié. 7/163:30 pmBKK - IAD
2 stops35h 55mSingapore Airlines
Deal found 4/29$1,096

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 abril 29, 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

mar. 5/6

10:05 pm-7:10 am

1 stop22h 05m

Bangkok Suvarnabhumi

mar. 5/20

2:55 am-4:10 pm

1 stop24h 15m

$963

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

dom. 5/4

11:00 am-7:20 pm

1 stop21h 20m

Bangkok Suvarnabhumi

mié. 6/4

8:00 pm-8:40 am

1 stop23h 40m

$967

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

jue. 9/18

10:05 pm-7:40 am

1 stop22h 35m

Phuket City

dom. 9/28

9:10 am-4:10 pm

1 stop42h 00m

$1,012

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

mar. 5/6

5:07 pm-10:00 am

2 stops29h 53m

Bangkok Suvarnabhumi

mar. 6/10

11:00 am-11:00 am

2 stops35h 00m

$1,036

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

dom. 5/4

1:30 pm-9:45 am

1 stop33h 15m

Bangkok Suvarnabhumi

mié. 7/16

10:45 pm-11:45 am

1 stop24h 00m

$1,045

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

lun. 5/5

7:13 pm-12:10 pm

2 stops29h 57m

Bangkok Suvarnabhumi

lun. 5/19

10:50 am-7:36 am

2 stops31h 46m

$1,067

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

lun. 9/8

1:30 pm-3:45 pm

2 stops39h 15m

Phuket City

jue. 9/11

1:30 pm-7:45 pm

2 stops41h 15m

$1,073

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

mié. 9/17

11:00 am-6:50 pm

1 stop20h 50m

Phuket City

lun. 9/22

2:45 pm-3:40 pm

2 stops35h 55m

$1,075

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

dom. 5/4

5:38 pm-7:00 pm

2 stops38h 22m

Bangkok Suvarnabhumi

dom. 5/11

3:30 pm-4:00 pm

2 stops35h 30m

$1,088

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

dom. 6/29

11:00 am-10:50 pm

1 stop24h 50m

Bangkok Don Mueang Intl

lun. 7/14

5:50 pm-3:45 pm

2 stops32h 55m

$1,099

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 57 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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $958). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $1,574). 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 abril 29, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Thailand, 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 Thailand by month

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

In terms of precipitation, rainfall in Thailand ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Thailand when rainfall is around 0.4 in.

Temperature in Thailand by month

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

If weather is an important factor for your trip to Thailand, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 abril 29, 2025.
Get a feel of what it's like to fly with EVA Air, Korean Air and China Airlines from Washington, D.C. to Thailand by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,066 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
ANA
8.3
Very good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Asiana Airlines
8.2
Very good
442 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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.

  • 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 $580 on Air India. Other airlines that offer cheap prices include Turkish Airlines from $591 and IndiGo from $594 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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Thailand (average of $958). Flying from Washington, D.C. Dulles Intl Airport to Thailand in December is currently the most expensive (average of $1,574). 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
Reagan-National to Narita flights
Baltimore to Narita flights
Dulles Intl to Incheon Intl flights
Baltimore to Haneda flights
Reagan-National to Haneda flights
Dulles Intl to Suvarnabhumi flights
Dulles Intl to Hyderabad flights
Dulles Intl to Taiwan Taoyuan Intl flights
Reagan-National to Suvarnabhumi flights
Reagan-National to Hyderabad flights
Baltimore to Hyderabad flights
Baltimore to Suvarnabhumi flights
Dulles Intl to Manila flights
Dulles Intl to Bangalore flights
Reagan-National to Incheon Intl flights
Reagan-National to Taiwan Taoyuan Intl flights
Dulles Intl to New Delhi flights
Dulles Intl to Hongqiao Intl flights
Dulles Intl to Ho Chi Minh City flights
Baltimore to Incheon Intl flights
Baltimore to Taiwan Taoyuan Intl flights
Dulles Intl to Capital flights
Dulles Intl to Gimpo Intl flights
Reagan-National to Bangalore flights
Baltimore to Bangalore flights
Reagan-National to New Delhi flights
Reagan-National to Hongqiao Intl flights
Dulles Intl to Chennai flights
Dulles Intl to Mumbai flights
Reagan-National to Manila flights
Baltimore to New Delhi flights
Baltimore to Manila flights
Dulles Intl to Pu Dong flights
Dulles Intl to Denpasar flights
Dulles Intl to Sung Shan flights
Reagan-National to Capital flights
Baltimore to Capital flights
Dulles Intl to Islamabad flights
Reagan-National to Denpasar flights
Reagan-National to Gimpo Intl flights
Baltimore to Denpasar flights
Baltimore to Hongqiao Intl flights
Reagan-National to Chennai flights
Baltimore to Pu Dong flights
Baltimore to Chennai flights
Dulles Intl to Lahore flights
Dulles Intl to Kathmandu flights
Reagan-National to Ho Chi Minh City 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$629FlexibilityNo cancel feeOn-time67%
SAUDIACheapest$641Average$872FlexibilityNo cancel feeOn-time86%
Air IndiaCheapest$700Average$841FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$919Average$1,141FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$920Average$1,129FlexibilityNo cancel feeOn-time77%
Alaska AirlinesCheapest$936Average$1,249FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$943Average$1,678FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$952Average$1,373FlexibilityNo cancel feeOn-time68%
JetBlueCheapest$1,011Average$1,240FlexibilityNo cancel feeOn-time62%
IndiGoCheapest$1,069Average$1,388FlexibilityNo cancel feeOn-time80%

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