$558 Cheap Flights from Washington (IAD) to Sukhothai (THS)

View $558 flight on Wed, Apr 8, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Sukhothai (THS)

Cheap Flights from Washington to Sukhothai (IAD-THS)

Prices were available within the past 7 days and start at $558 for one-way flights and $1,066 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,066 Roundtrip, found 4 days ago
$1,066
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,066 found 4 days ago
Etihad Airways
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,066 Roundtrip, found 4 days ago
$1,066
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,066 found 4 days ago
Etihad Airways
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,070 Roundtrip, found 4 days ago
$1,070
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,070 found 4 days ago
Etihad Airways
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,193 Roundtrip, found 4 days ago
$1,193
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,193 found 4 days ago
Etihad Airways
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,197 Roundtrip, found 4 days ago
$1,197
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,197 found 4 days ago
Qatar Airways
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,262 Roundtrip, found 4 days ago
$1,262
Roundtrip
found 4 days ago
Select Qatar Airways flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,262 found 4 days ago
Qatar Airways
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,265 Roundtrip, found 4 days ago
$1,265
Roundtrip
found 4 days ago
Select Qatar Airways flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,265 found 4 days ago
Emirates
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,495 Roundtrip, found 4 days ago
$1,495
Roundtrip
found 4 days ago
Select Emirates flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,495 found 4 days ago
Swiss International Air Lines
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,601 Roundtrip, found 4 days ago
$1,601
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,601 found 4 days ago
Austrian Airlines
Wed, Apr 8 - Wed, May 6
IAD
Washington
THS
Sukhothai
$1,627 Roundtrip, found 4 days ago
$1,627
Roundtrip
found 4 days ago
Select Austrian Airlines flight, departing Wed, Apr 8 from Washington to Sukhothai, returning Wed, May 6, priced at $1,627 found 4 days ago

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Flights from Washington (IAD) to Sukhothai (THS)
Origin airport
Washington Dulles Intl.
Destination airport
Sukhothai
Roundtrip price
$1,065
Distance
8550 mi

Washington to Sukhothai Flights

The cheapest times to fly from Washington to Sukhothai

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Sukhothai are during the month of April. You can find some of the cheapest flights from Washington to Sukhothai with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Sukhothai

Sunday is one of the best days to book for cheap flights from Washington to Sukhothai: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Sukhothai

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Sukhothai in 2025. You can also book with separate airlines for your outbound and return journeys, from $558 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Sukhothai flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Sukhothai airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS) cost?
Get a cheap one-way flight from $558 or cheap return flight from $1,066 from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS)?
The cheapest month to fly from IAD to THS is April, when demand is low. Off-peak months are often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest IAD to THS flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to THS?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS)?
To avoid possible delays on the Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS) route, travel before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS) last-minute?
Last-minute bookings from IAD to THS are typically more expensive. To lock in the lowest prices, start looking for flights well in advance. That being said, if you're flexible with your travel dates, you may score a cheap fare right before your trip.
Is it cheaper to book an IAD to THS flight and hotel package?
Opting for an IAD to THS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our wide range of hotels and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Sukhothai Airport (THS)?
If you booked your IAD to THS flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.