$561 Cheap Flights from Samui Intl. Airport (USM) to Las Vegas (LAS)

View $561 flight on Mon, Oct 27, 2025Opens in a new window

Popular airlines from Samui Intl. Airport (USM) to Harry Reid Intl. Airport (LAS)

Cheap Flights from Samui Intl. Airport to Las Vegas (USM-LAS)

Prices were available within the past 7 days and start at $561 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Samui Intl. Airport (USM) to Las Vegas (LAS)
Origin airport
Samui Intl. Airport
Destination airport
Harry Reid Intl.
Distance
8539 mi

Samui Intl. Airport to Las Vegas Flights

The cheapest times to fly from Samui Intl. Airport to Las Vegas

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

 

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

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

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 Samui Intl. Airport to Las Vegas in 2025. You can also book with separate airlines for your outbound and return journeys, from $561 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 Samui Intl. Airport to Las Vegas 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 Samui Intl. Airport to Las Vegas 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 Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS) cost?
Get a cheap one-way flight from $561 or cheap return flight from Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS)?
Traveling in may help you find better deals, as it's the cheapest month for flights between USM and LAS. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest USM to LAS flight.
How many flights per day from Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS)?
Direct flights from Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from USM to LAS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change 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 Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS)?
To avoid possible delays on the Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS) route, aim to travel before 3 PM. Departures after this time are 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 Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS) last-minute?
Waiting until just before your trip to book a flight from USM to LAS often results in higher prices. While it's possible to find some last-minute offers, there's no guarantee. Keep your travel schedule open for a better chance of scoring a bargain.
Is it cheaper to book an USM to LAS flight and hotel package?
Compared with arranging flights and hotels separately, booking an USM to LAS flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Ko Samui Airport (USM) to Harry Reid Intl. Airport (LAS)?
In most cases, you can cancel or modify your USM to LAS flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further information, visit our Customer Service portal.

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*Available to One Key members.