$580 Cheap Flights from Washington (IAD) to Ubon Ratchathani (UBP)

View $580 flight on Fri, Oct 10, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani (UBP-Ubon Ratchathani Intl.)

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Cheap Flights from Washington to Ubon Ratchathani (IAD-UBP)

Prices were available within the past 7 days and start at $580 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani Intl. Airport (UBP) cost?
Grab a cheap one-way flight from $580 or cheap return flight from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani Intl. Airport (UBP) 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 Ubon Ratchathani Intl. Airport (UBP)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between IAD and UBP. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani Intl. Airport (UBP)?
To find the cheapest airline that'll fly you from IAD to UBP, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani Intl. Airport (UBP)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani Intl. Airport (UBP) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to UBP?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*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 Ubon Ratchathani Intl. Airport (UBP)?
Choose a flight from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani Intl. Airport (UBP) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be 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 Ubon Ratchathani Intl. Airport (UBP) last-minute?
Booking your ticket from IAD to UBP just before your journey is usually more expensive. But if you're flexible with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an IAD to UBP flight and hotel package?
You'll generally save money by booking an IAD to UBP flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your preferred flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Ubon Ratchathani Intl. Airport (UBP)?
Generally, it's possible to reschedule or cancel your IAD to UBP flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Ubon Ratchathani Intl.
Distance
8688 mi

Book with confidence

Book with confidence

Washington to Ubon Ratchathani Flights

The cheapest times to fly from Washington to Ubon Ratchathani

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 Ubon Ratchathani are during the month of . You can find some of the cheapest flights from Washington to Ubon Ratchathani with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Ubon Ratchathani

Sunday is one of the best days to book for cheap flights from Washington to Ubon Ratchathani: 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 Ubon Ratchathani

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 Ubon Ratchathani in 2025. You can also book with separate airlines for your outbound and return journeys, from $580 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 Ubon Ratchathani 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 Ubon Ratchathani 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.

 

Washington to Ubon Ratchathani Flights

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*Available to One Key members.