$632+ Cheap flights from Denver (DEN) to Ko Samui (USM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — USM
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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Find cheap flights from Denver to Ko Samui with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Denver to Ko Samui
Cheapest
Best
Last-minute
One-way
Cheapest flights from Denver to Ko SamuiExplore the most affordable flight options available from Denver to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
Explore the most affordable flight options available from Denver to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
This Cathay Pacific deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:58 am -
2 stops42h 37m
Sun 11/157:00 am -
3 stops26h 53m
Deal found 9/17![Multiple Airlines logo]()
$1,278
This KAYAK deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:11 pm -
2 stops60h 29m
Sat 10/1711:55 am -
2 stops60h 26m
Deal found 9/16![Cathay Pacific logo]()
$1,299
This Cathay Pacific deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:03 am -
2 stops45h 32m
Fri 11/68:30 am -
3 stops27h 39m
Deal found 9/14![Multiple Airlines logo]()
$1,328
This Turkish Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:30 pm -
2 stops32h 55m
Sun 11/158:30 pm -
2 stops34h 55m
Deal found 9/16![Turkish Airlines logo]()
$1,423
This Expedia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/319:03 am -
2 stops45h 32m
Sat 11/76:40 pm -
2 stops36h 45m
Deal found 9/15![Multiple Airlines logo]()
$1,662
This KAYAK deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:30 pm -
3 stops28h 40m
Sat 10/1711:45 am -
3 stops36h 17m
Deal found 9/18![Multiple Airlines logo]()
$1,679
Best flights from Denver to Ko SamuiDiscover carefully curated flight deals from Denver to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Denver to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Cathay Pacific deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:58 am -
2 stops42h 37m
Sun 11/157:00 am -
3 stops26h 53m
Deal found 9/17![Multiple Airlines logo]()
$1,278
This KAYAK deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:11 pm -
2 stops60h 29m
Sat 10/1711:55 am -
2 stops60h 26m
Deal found 9/16![Cathay Pacific logo]()
$1,299
This Turkish Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:30 pm -
2 stops32h 55m
Sun 11/158:30 pm -
2 stops34h 55m
Deal found 9/14![Turkish Airlines logo]()
$1,423
This Cathay Pacific deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:03 am -
2 stops45h 32m
Fri 11/68:30 am -
3 stops27h 39m
Deal found 9/14![Multiple Airlines logo]()
$1,328
This KAYAK deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:30 pm -
3 stops28h 40m
Sat 10/1711:45 am -
3 stops36h 17m
Deal found 9/18![Multiple Airlines logo]()
$1,679
Last-minute flights from Denver to Ko SamuiDiscover last-minute flight deals from Denver to Ko Samui. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Ko Samui. Data last updated September 18, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:11 pm -
2 stops60h 29m
Sat 10/1711:55 am -
2 stops60h 26m
Deal found 9/16![Cathay Pacific logo]()
$1,299
This KAYAK deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:30 pm -
3 stops28h 40m
Sat 10/1711:45 am -
3 stops36h 17m
Deal found 9/18![Multiple Airlines logo]()
$1,679
This Cathay Pacific deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:58 am -
2 stops42h 37m
Sun 11/157:00 am -
3 stops29h 09m
Deal found 9/16![Multiple Airlines logo]()
$1,278
This Cathay Pacific deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:03 am -
2 stops45h 32m
Fri 11/68:30 am -
3 stops27h 39m
Deal found 9/14![Multiple Airlines logo]()
$1,328
This Turkish Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:30 pm -
2 stops32h 55m
Sun 11/158:30 pm -
2 stops34h 55m
Deal found 9/16![Turkish Airlines logo]()
$1,423
This Expedia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/319:03 am -
2 stops45h 32m
Sat 11/76:40 pm -
2 stops36h 45m
Deal found 9/15![Multiple Airlines logo]()
$1,662
One-way flights from Denver to Ko SamuiSearch for one-way flight options from Denver to Ko Samui. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Denver to Ko Samui. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:55 pm -
3 stops44h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$632
Find flight deals from Denver to Ko Samui
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 18, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,278 (Cathay Pacific) |
One-way from | $632 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Denver to Ko Samui that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
DenverKo Samui
DEN Denver Intl - USM Ko Samui
DENUSM
Denver Intl
Mon 10/12
10:55 pm-8:15 am
3 stops44h 20m
Ko Samui
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$632
DenverKo Samui
DEN Denver Intl - USM Ko Samui
DENUSM
Denver Intl
Fri 10/30
11:58 am-7:35 pm
2 stops42h 37m
Ko Samui
Sun 11/15
7:00 am-7:53 pm
3 stops26h 53m
$1,278
DenverKo Samui
DEN Denver Intl - USM Ko Samui
DENUSM
Denver Intl
Thu 10/1
6:11 pm-7:40 pm
2 stops60h 29m
Ko Samui
Sat 10/17
11:55 am-11:21 am
2 stops60h 26m
$1,299
DenverKo Samui
DEN Denver Intl - USM Ko Samui
DENUSM
Denver Intl
Fri 10/30
9:03 am-7:35 pm
2 stops45h 32m
Ko Samui
Fri 11/6
8:30 am-10:09 pm
3 stops27h 39m
$1,328
DenverKo Samui
DEN Denver Intl - USM Ko Samui
DENUSM
Denver Intl
Fri 10/30
8:30 pm-6:25 pm
2 stops32h 55m
Ko Samui
Sun 11/15
8:30 pm-5:25 pm
2 stops34h 55m
$1,423
DenverKo Samui
DEN Denver Intl - USM Ko Samui
DENUSM
Denver Intl
Thu 10/1
7:30 pm-1:10 pm
3 stops28h 40m
Ko Samui
Sat 10/17
11:45 am-11:02 am
3 stops36h 17m
$1,679
Sorted by cheapest first
Compare providers for flights from Denver to Ko Samui
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Ko Samui in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Denver-Ko Samui flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Denver-Ko Samui flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Denver-Ko Samui flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-Ko Samui flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Denver to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Denver with our price prediction graph.
DEN-USM
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Denver to Ko Samui
How often are flights from Denver to Ko Samui delayed?
About 23% of weekly flights between Denver and Ko Samui have experienced delays in the past year, with the average delay time being 144 minutes.
What is the most punctual flight time for Denver to Ko Samui flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Denver to Ko Samui flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.
The best insider tips for Denver to Ko Samui flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Ko Samui trip
Our travel experts
Related info for your journey
Find useful and relevant information for your journey from Denver to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan
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