$621 Cheap Flights from Samui Intl. Airport (USM) to Denver (DEN)

View $621 flight on Tue, May 12, 2026Opens in a new window

Popular airlines from Samui Intl. Airport (USM) to Denver Intl. Airport (DEN)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Samui Intl. Airport to Denver (USM-DEN)

Prices were available within the past 7 days and start at $621 for one-way flights and $2,036 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,036 Roundtrip, found 6 days ago
$2,036
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,036 found 6 days ago
Bangkok Airways
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,047 Roundtrip, found 6 days ago
$2,047
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,047 found 6 days ago
Bangkok Airways
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,084 Roundtrip, found 6 days ago
$2,084
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,084 found 6 days ago
Bangkok Airways
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,095 Roundtrip, found 6 days ago
$2,095
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,095 found 6 days ago
Bangkok Airways
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,154 Roundtrip, found 6 days ago
$2,154
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,154 found 6 days ago
Bangkok Airways
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,165 Roundtrip, found 6 days ago
$2,165
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,165 found 6 days ago
Bangkok Airways
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,202 Roundtrip, found 6 days ago
$2,202
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,202 found 6 days ago
Lufthansa
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$2,356 Roundtrip, found 1 day ago
$2,356
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $2,356 found 1 day ago
Cathay Pacific
Thu, Apr 9 - Mon, Apr 13
USM
Koh Samui
DEN
Denver
$2,543 Roundtrip, found 6 days ago
$2,543
Roundtrip
found 6 days ago
Select Cathay Pacific flight, departing Thu, Apr 9 from Koh Samui to Denver, returning Mon, Apr 13, priced at $2,543 found 6 days ago
British Airways
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$4,422 Roundtrip, found 1 day ago
$4,422
Roundtrip
found 1 day ago
Select British Airways flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $4,422 found 1 day ago

The Annual Vacation Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

Frequently asked questions

How much does a flight from Ko Samui Airport (USM) to Denver Intl. Airport (DEN) cost?
Snag a cheap one-way flight from $621 or cheap return flight from $2,036 from Ko Samui Airport (USM) to Denver Intl. Airport (DEN) 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 Ko Samui Airport (USM) to Denver Intl. Airport (DEN)?
The cheapest month to fly from USM to DEN is April, when there's less demand. Off-peak season is usually when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Ko Samui Airport (USM) to Denver Intl. Airport (DEN)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest USM to DEN flight.
How many flights per day from Ko Samui Airport (USM) to Denver Intl. Airport (DEN)?
You'll have to hop on a flight with a layover when traveling from Ko Samui Airport (USM) to Denver Intl. Airport (DEN). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from USM to DEN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on various factors, such as the season and airline.*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 Denver Intl. Airport (DEN)?
To arrive at Denver Intl. Airport (DEN) without delays, opt for a flight that leaves Ko Samui Airport (USM) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Denver Intl. Airport (DEN) last-minute?
Last-minute bookings from USM to DEN are usually more expensive. To lock in the lowest rates, start searching for flights as soon as possible. That said, if you can play around with your travel dates, it's possible to land a cheap fare just before your departure.
Is it cheaper to book an USM to DEN flight and hotel package?
Compared with arranging hotels and flights separately, booking an USM to DEN flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place will take the hassle out of travel planning. Just secure your flights and choose from our extensive range of hotels, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Ko Samui Airport (USM) to Denver Intl. Airport (DEN)?
In most cases, you're able to reschedule or cancel your USM to DEN flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further details, visit our Customer Service portal.

Travel information

Origin airport
Samui Intl. Airport
Destination airport
Denver Intl.
Roundtrip price
$2,036
Distance
8673 mi

Book with confidence

Samui Intl. Airport to Denver Flights

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

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

 

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

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

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 Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $621 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 Denver 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 Denver 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.

 

Samui Intl. Airport to Denver Flights

*Flight schedules are subject to change.

*Available to One Key members.