$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)

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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 $2,204 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$2,204 Roundtrip, found 1 day ago
$2,204
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $2,204 found 1 day ago
Bangkok Airways
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$2,214 Roundtrip, found 1 day ago
$2,214
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $2,214 found 1 day 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
Lufthansa
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$2,377 Roundtrip, found 1 day ago
$2,377
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $2,377 found 1 day ago
Bangkok Airways
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$2,411 Roundtrip, found 1 day ago
$2,411
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $2,411 found 1 day ago
Bangkok Airways
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$2,450 Roundtrip, found 1 day ago
$2,450
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $2,450 found 1 day ago
Bangkok Airways
Sun, Mar 15 - Thu, Mar 19
USM
Koh Samui
DEN
Denver
$2,487 Roundtrip, found 1 day ago
$2,487
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Sun, Mar 15 from Koh Samui to Denver, returning Thu, Mar 19, priced at $2,487 found 1 day 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

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Frequently asked questions

How much does a flight from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $621 and cheap return flights from $2,204 Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights usually range from $1238 to $4068. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
The cheapest month to fly from USM to DEN is March when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
Enter USM to DEN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
Bangkok Airways, British Airways and Lufthansa are just some of the carriers that fly from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Samui International Airport (USM) to Denver (DEN) typically departs at around 7:00 AM, operated by Bangkok Airways and Lufthansa. This is a seasonal service available in September, and an early departure can help you make the most of your time in Denver. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
The busiest day for flights from (USM) to Denver Intl. (DEN) is a Sunday, with around 23 flights. This gives you plenty of options for your travel plans. A major airline on this route is Bangkok Airways.
What are the most popular departure times for flights from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Samui Intl. Airport (USM) to Denver, CO (DEN) are in the late morning, from 9am to noon. About 74% of passengers prefer this time window. Many major carriers, including Bangkok Airways and United Airlines, offer flights during this period. This timing is ideal for travelers looking to arrive in Denver with a full day ahead to explore.
Can you fly business or first class from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
Business class seats are offered on the USM to DEN route with Bangkok Airways.
How do I earn miles on a Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from USM (USM)?
If you're planning to travel to Denver from USM (USM), you can fly typically into Denver Intl. (DEN) Some flights may connect through major hubs like Changi (SIN), Suvarnabhumi Intl. (BKK), Hong Kong Intl. (HKG) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) Denver Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.)?
If you booked your Samui Intl. Airport (USM) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Samui Intl. Airport
Destination airport
Denver Intl.
Roundtrip price
$2,203
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 March. 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.