$766 Cheap Flights from Samui Intl. Airport (USM) to Las Vegas (LAS)

View $766 flight on Wed, Oct 29, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $766 for one-way flights and $1,846 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Wed, Jul 9 - Sat, Jul 19
USM
Koh Samui
LAS
Las Vegas
$1,846 Roundtrip, found 4 days ago
$1,846
Roundtrip
found 4 days ago
Select Bangkok Airways flight, departing Wed, Jul 9 from Koh Samui to Las Vegas, returning Sat, Jul 19, priced at $1,846 found 4 days ago
Swiss International Air Lines
Fri, Jul 11 - Sat, Jul 19
USM
Koh Samui
LAS
Las Vegas
$1,889 Roundtrip, found 4 days ago
$1,889
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Fri, Jul 11 from Koh Samui to Las Vegas, returning Sat, Jul 19, priced at $1,889 found 4 days ago
Bangkok Airways
Wed, Jul 9 - Sat, Jul 26
USM
Koh Samui
LAS
Las Vegas
$1,974 Roundtrip, found 4 days ago
$1,974
Roundtrip
found 4 days ago
Select Bangkok Airways flight, departing Wed, Jul 9 from Koh Samui to Las Vegas, returning Sat, Jul 26, priced at $1,974 found 4 days ago
Bangkok Airways
Wed, Jul 9 - Sun, Jul 20
USM
Koh Samui
LAS
Las Vegas
$2,009 Roundtrip, found 4 days ago
$2,009
Roundtrip
found 4 days ago
Select Bangkok Airways flight, departing Wed, Jul 9 from Koh Samui to Las Vegas, returning Sun, Jul 20, priced at $2,009 found 4 days ago
Swiss International Air Lines
Fri, Jul 11 - Sat, Jul 26
USM
Koh Samui
LAS
Las Vegas
$2,016 Roundtrip, found 4 days ago
$2,016
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Fri, Jul 11 from Koh Samui to Las Vegas, returning Sat, Jul 26, priced at $2,016 found 4 days ago
Lufthansa
Tue, Jul 15 - Sat, Jul 19
USM
Koh Samui
LAS
Las Vegas
$2,051 Roundtrip, found 4 days ago
$2,051
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Tue, Jul 15 from Koh Samui to Las Vegas, returning Sat, Jul 19, priced at $2,051 found 4 days ago
Swiss International Air Lines
Fri, Jul 11 - Sun, Jul 20
USM
Koh Samui
LAS
Las Vegas
$2,051 Roundtrip, found 4 days ago
$2,051
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Fri, Jul 11 from Koh Samui to Las Vegas, returning Sun, Jul 20, priced at $2,051 found 4 days ago
Bangkok Airways
Wed, Jul 9 - Mon, Jul 28
USM
Koh Samui
LAS
Las Vegas
$2,116 Roundtrip, found 4 days ago
$2,116
Roundtrip
found 4 days ago
Select Bangkok Airways flight, departing Wed, Jul 9 from Koh Samui to Las Vegas, returning Mon, Jul 28, priced at $2,116 found 4 days ago
British Airways
Tue, Jul 15 - Fri, Aug 1
USM
Koh Samui
LAS
Las Vegas
$2,247 Roundtrip, found 4 days ago
$2,247
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Jul 15 from Koh Samui to Las Vegas, returning Fri, Aug 1, priced at $2,247 found 4 days ago
Cathay Pacific
Fri, Jul 18 - Sun, Jul 20
USM
Koh Samui
LAS
Las Vegas
$2,409 Roundtrip, found 19 hours ago
$2,409
Roundtrip
found 19 hours ago
Select Cathay Pacific flight, departing Fri, Jul 18 from Koh Samui to Las Vegas, returning Sun, Jul 20, priced at $2,409 found 19 hours ago
Flights from Samui Intl. Airport (USM) to Las Vegas (LAS)
Origin airport
Samui Intl. Airport
Destination airport
Harry Reid Intl.
Airlines serving
Cathay Pacific
Roundtrip price
$1,846
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 July. 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 $766 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?
Discover the latest flight deals from USM to LAS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from USM to LAS?
The cheapest flights from USM to LAS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from USM to LAS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from USM to LAS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
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.