Cheap Flights from Washington (IAD) to Tachilek (THL)

Popular airlines from Washington Dulles Intl. Airport (IAD) to Tachilek (THL)

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL) cost?
Lock in a cheap one-way flight or cheap return flight from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL)?
is the least expensive month to fly from IAD to THL. Timing your trip outside of the busy season is often the key to finding a great deal.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL)?
To find the cheapest airline that'll fly you from IAD to THL, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL)?
There aren't any daily direct flights available from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from IAD to THL?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change based on the airline, season 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 Tachilek Airport (THL)?
Choose a flight from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL) that takes off 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 Tachilek Airport (THL) last-minute?
Booking your ticket from IAD to THL right before your getaway is generally more expensive. But if there's some wiggle room with your travel dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book an IAD to THL flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to THL flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Tachilek Airport (THL)?
In most cases, you can modify or cancel your IAD to THL flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further details, visit our Customer Service portal.

Travel information

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Tachilek
Distance
8326 mi

Book with confidence

Book with confidence

Washington to Tachilek Flights

The cheapest times to fly from Washington to Tachilek

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

 

The best time to book a flight from Washington to Tachilek

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

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 Tachilek in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Tachilek 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 Tachilek 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 Tachilek Flights
*Available to One Key members.