Which airports can I use when flying from Denver to Ko Samui?

Flights from Denver to Ko Samui usually depart from Denver Intl (DEN) and arrive at Ko Samui (USM).

Can I save money by using flexible dates for flights from Denver to Ko Samui?

Yes. Being flexible with your travel dates can save you up to 30% on the Denver to Ko Samui route. Friday is the cheapest departure day at ฿58,293 return on average, while Wednesday is the most expensive at ฿82,780, a difference of ฿24,487. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Ko Samui?

Some of the most popular sights in Ko Samui are Chaweng Beach, Lamai Beach, and Hin Ta and Hin Yai Rocks. These are among the most viewed places in Ko Samui on KAYAK.

Do I need a passport to fly from Denver to Ko Samui?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Denver to Ko Samui changed much recently?

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿40,349 to ฿137,867. That means the highest observed fare was about 3x higher than the lowest one.

How are flight prices from Denver to Ko Samui looking right now?

One-way fares from Denver to Ko Samui are currently higher than usual. Average one-way flight prices are about ฿41,715, which is 48% above the typical average for this route.

What is the time difference between Denver and Ko Samui?

Ko Samui is 13 hours ahead of Denver (Indochina Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

Which car hire options are available at Ko Samui Airport (USM)?

Ko Samui Airport (USM) hosts 5 major car hire companies, with daily rates starting from around ฿448 for economy cars. Top options include: • Drive Car Rental • Alamo • Sixt • Enterprise Rent-A-Car • Hertz

฿16,952 CHEAP FLIGHTS from Denver to Ko Samui (DEN - USM)

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Cheapest return flight

฿40,349

Typical prices: ฿58,293-฿71,608

Multiple Airlines

Tue 30/10Thu 15/11

DEN - USM • 2 stops

Cheapest one-way flight

฿16,952

Typical prices: ฿22,279-฿41,800

Multiple Airlines

Sun 14/10

DEN - USM • 3 stops

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We hope you enjoy your trip to Ko Samui!

Flight Deals

Cheap Flights from Denver to Ko Samui (DEN-USM)

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Recent return flight deals from Denver to Ko Samui

Fri 30 Oct - Sun 15 Nov

19:00 - 10:35DEN Denver Intl-USM Ko Samui

26h 35m2 stops Vancouver Intl Bangkok Suvarnabhumi

19:10 - 12:43USM Ko Samui-DEN Denver Intl

31h 33m2 stops Bangkok Suvarnabhumi Vancouver Intl

฿40,349Multiple Airlines

Thu 1 Oct - Sat 17 Oct

18:11 - 19:40DEN Denver Intl-USM Ko Samui

60h 29m2 stops Los Angeles Hong Kong Intl

11:55 - 11:21USM Ko Samui-DEN Denver Intl

60h 26m2 stops Hong Kong Intl Los Angeles

฿47,222Cathay Pacific

Thu 1 Oct - Sat 17 Oct

18:11 - 19:40DEN Denver Intl-USM Ko Samui

60h 29m2 stops Los Angeles Hong Kong Intl

11:55 - 11:21USM Ko Samui-DEN Denver Intl

60h 26m2 stops Hong Kong Intl Los Angeles

฿48,776Cathay Pacific

Mon 16 Nov - Sun 29 Nov

19:30 - 18:25DEN Denver Intl-USM Ko Samui

32h 55m2 stops Istanbul Phuket City

07:00 - 17:25USM Ko Samui-DEN Denver Intl

48h 25m2 stops Bangkok Suvarnabhumi Istanbul

฿50,130Multiple Airlines

Thu 1 Oct - Sat 17 Oct

18:11 - 19:40DEN Denver Intl-USM Ko Samui

60h 29m2 stops Los Angeles Hong Kong Intl

11:55 - 11:21USM Ko Samui-DEN Denver Intl

60h 26m2 stops Hong Kong Intl Los Angeles

฿51,717Cathay Pacific

Thu 1 Oct - Sat 17 Oct

18:11 - 19:40DEN Denver Intl-USM Ko Samui

60h 29m2 stops Los Angeles Hong Kong Intl

11:55 - 11:21USM Ko Samui-DEN Denver Intl

60h 26m2 stops Hong Kong Intl Los Angeles

฿52,047Cathay Pacific

Sun 15 Nov - Sun 29 Nov

18:30 - 19:35DEN Denver Intl-USM Ko Samui

35h 05m2 stops Dallas/Fort Worth Hong Kong Intl

07:00 - 17:25USM Ko Samui-DEN Denver Intl

48h 25m2 stops Bangkok Suvarnabhumi Istanbul

฿53,369Multiple Airlines

Thu 1 Oct - Sat 17 Oct

18:11 - 19:40DEN Denver Intl-USM Ko Samui

60h 29m2 stops Los Angeles Hong Kong Intl

11:55 - 21:55USM Ko Samui-DEN Denver Intl

23h 00m2 stops Hong Kong Intl Los Angeles

฿53,831Cathay Pacific

Mon 16 Nov - Sun 29 Nov

18:37 - 12:35DEN Denver Intl-USM Ko Samui

27h 58m3 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

16:25 - 17:25USM Ko Samui-DEN Denver Intl

39h 00m2 stops Singapore Changi Istanbul

฿57,334Multiple Airlines

Sun 15 Nov - Sun 29 Nov

18:37 - 16:15DEN Denver Intl-USM Ko Samui

31h 38m3 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

16:25 - 17:25USM Ko Samui-DEN Denver Intl

39h 00m2 stops Singapore Changi Istanbul

฿61,168Multiple Airlines

Booking Insights

Price, demand, and travel trends for Denver to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Denver to Ko Samui with more confidence.

What is the cheapest airline to fly from Denver to Ko Samui?

Cathay Pacific (฿47,057) offered the cheapest return ticket from Denver to Ko Samui in the last 5 days.

Find deals

Cheapest flight	฿16,952

Flights from Denver to Ko Samui

When to book flights from Denver to Ko Samui

Are your dates flexible? Find out the best times to travel from Denver to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Denver to Ko Samui?
Flights from Denver to Ko Samui usually depart from Denver Intl (DEN) and arrive at Ko Samui (USM).
Can I save money by using flexible dates for flights from Denver to Ko Samui?
Yes. Being flexible with your travel dates can save you up to 30% on the Denver to Ko Samui route. Friday is the cheapest departure day at ฿58,293 return on average, while Wednesday is the most expensive at ฿82,780, a difference of ฿24,487. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Ko Samui?
Some of the most popular sights in Ko Samui are Chaweng Beach, Lamai Beach, and Hin Ta and Hin Yai Rocks. These are among the most viewed places in Ko Samui on KAYAK.
Do I need a passport to fly from Denver to Ko Samui?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from Denver to Ko Samui changed much recently?
Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿40,349 to ฿137,867. That means the highest observed fare was about 3x higher than the lowest one.
How are flight prices from Denver to Ko Samui looking right now?
One-way fares from Denver to Ko Samui are currently higher than usual. Average one-way flight prices are about ฿41,715, which is 48% above the typical average for this route.
What is the time difference between Denver and Ko Samui?
Ko Samui is 13 hours ahead of Denver (Indochina Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.
Which car hire options are available at Ko Samui Airport (USM)?
Ko Samui Airport (USM) hosts 5 major car hire companies, with daily rates starting from around ฿448 for economy cars. Top options include:
• Drive Car Rental
• Alamo
• Sixt
• Enterprise Rent-A-Car
• Hertz

If your dates are flexible, aim for a Friday departure instead of Wednesday. On this route, Friday flights average ฿58,293 – about ฿24,487 less than Wednesday (30% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.
- Ozo Chaweng Samui - Sha Extra Plus
- Cosi Samui Chaweng Beach
- Melia Koh Samui

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DEN - USM

฿16,952 Find Cheap Flights from Denver to Ko Samui – Compare and Save

Everything you should know

Cheap Flights from Denver to Ko Samui (DEN-USM)

Recent return flight deals from Denver to Ko Samui

Recent one-way flight deals from Denver to Ko Samui

Price, demand, and travel trends for Denver to Ko Samui flights

What is the cheapest airline to fly from Denver to Ko Samui?

Key details for Denver to Ko Samui flights

Cheapest flight

When to book flights from Denver to Ko Samui

Your Denver to Ko Samui flight questions, answered

Your guide to booking Denver to Ko Samui flights

More options for your flight from Denver to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car hire

Information on your arrival and departure airports

Cabin class types available on flights from Denver to Ko Samui

Flights from domestic origins to Ko Samui

Flights to other popular destinations