$889 Cheap Flights from Houston (HOU) to Samui Intl. Airport (USM)

View $889 flight on Thu, Sep 11, 2025Opens in a new window

Popular airlines from Houston William Hobby Airport (HOU) to Samui Intl. Airport (USM)

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Cheap Flights from Houston to Samui Intl. Airport (HOU-USM)

Prices were available within the past 7 days and start at $889 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alternative airports near Koh Samui

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Samui Intl. Airport USM. Cheapest and Closest option available. Average driving time to city center is 31 minutes. Flights from $1,184
USM
Samui Intl. Airport
CheapestClosest
Average driving time to city center31 min
Flights from $1,184
Flights from Houston (HOU) to Samui Intl. Airport (USM)
Origin airport
William P. Hobby
Destination airport
Samui Intl. Airport
Distance
9541 mi

Houston to Samui Intl. Airport Flights

The cheapest times to fly from Houston to Samui Intl. Airport

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

 

The best time to book a flight from Houston to Samui Intl. Airport

Sunday is one of the best days to book for cheap flights from Houston to Samui Intl. Airport: 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 Houston to Samui Intl. Airport

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 Houston to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $889 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 Houston to Samui Intl. Airport 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 Houston to Samui Intl. Airport 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 William P. Hobby Airport (HOU) to Ko Samui Airport (USM) cost?
Get a cheap one-way flight from $889 or cheap return flight from William P. Hobby Airport (HOU) to Ko Samui Airport (USM) 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 William P. Hobby Airport (HOU) to Ko Samui Airport (USM)?
Planning your trip for may help you find better deals, as it's the cheapest month for flights between HOU and USM. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from William P. Hobby Airport (HOU) to Ko Samui Airport (USM)?
To find the cheapest airline flying from HOU to USM, use Expedia's filter tool. Tailor 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 flights first.
How many flights per day from William P. Hobby Airport (HOU) to Ko Samui Airport (USM)?
There aren't any daily direct flights from William P. Hobby Airport (HOU) to Ko Samui Airport (USM). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from HOU to USM?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change depending 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 William P. Hobby Airport (HOU) to Ko Samui Airport (USM)?
To avoid potential delays on the William P. Hobby Airport (HOU) to Ko Samui Airport (USM) route, aim to fly before 3 PM. Later departures 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 William P. Hobby Airport (HOU) to Ko Samui Airport (USM) last-minute?
Last-minute fares from HOU to USM are generally more expensive. To lock in the best prices, start looking for flights well ahead of time. That being said, if you're flexible with your travel plans, it's possible to find a cheap ticket right before your journey.
Is it cheaper to book a HOU to USM flight and hotel package?
Booking a HOU to USM flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our wide range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from William P. Hobby Airport (HOU) to Ko Samui Airport (USM)?
Usually, it's possible to reschedule or cancel your HOU to USM flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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