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Cheap flights from Denver to Ko Samui from $1,196

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Ko Samui departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Denver to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:45 pm - 9:20 amDEN  Denver Intl-USM Ko Samui
24h 35m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
6:55 pm - 4:58 pmUSM  Ko Samui-DEN Denver Intl
35h 03m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,196Multiple Airlines
Wed, Sep 2 - Thu, Oct 1
Multiple Airlines Logo
7:00 pm - 10:35 amDEN  Denver Intl-USM Ko Samui
26h 35m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
9:10 pm - 12:38 pmUSM  Ko Samui-DEN Denver Intl
29h 28m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,261Multiple Airlines
Fri, Oct 30 - Sun, Nov 15
Multiple Airlines Logo
7:50 pm - 8:15 amDEN  Denver Intl-USM Ko Samui
23h 25m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 pm - 12:31 pmUSM  Ko Samui-DEN Denver Intl
28h 41m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,280Multiple Airlines
Sat, Oct 10 - Tue, Oct 20
Multiple Airlines Logo
7:10 pm - 10:35 amDEN  Denver Intl-USM Ko Samui
25h 25m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:40 pm - 12:38 pmUSM  Ko Samui-DEN Denver Intl
29h 58m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,281Multiple Airlines
Sun, Jan 31 - Mon, Feb 15
Multiple Airlines Logo
7:45 pm - 10:45 amDEN  Denver Intl-USM Ko Samui
26h 00m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 pm - 4:58 pmUSM  Ko Samui-DEN Denver Intl
33h 08m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,301Multiple Airlines
Wed, Sep 2 - Tue, Sep 29
Multiple Airlines Logo
7:10 pm - 11:40 amDEN  Denver Intl-USM Ko Samui
26h 30m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:40 pm - 12:29 pmUSM  Ko Samui-DEN Denver Intl
29h 49m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,325Multiple Airlines
Sat, Jan 30 - Mon, Feb 15
Multiple Airlines Logo
7:10 pm - 9:20 amDEN  Denver Intl-USM Ko Samui
24h 10m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:40 pm - 12:38 pmUSM  Ko Samui-DEN Denver Intl
29h 58m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,330Multiple Airlines
Tue, Feb 2 - Mon, Feb 15
Multiple Airlines Logo
7:50 pm - 8:15 amDEN  Denver Intl-USM Ko Samui
23h 25m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
6:15 pm - 12:31 pmUSM  Ko Samui-DEN Denver Intl
31h 16m2 stops Singapore Changi Vancouver Intl
$1,513Multiple Airlines
Sat, Oct 10 - Mon, Oct 19
Multiple Airlines Logo
7:50 pm - 9:20 amDEN  Denver Intl-USM Ko Samui
24h 30m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 pm - 2:51 pmUSM  Ko Samui-DEN Denver Intl
31h 01m2 stops Bangkok Suvarnabhumi Vancouver Intl
$1,554Multiple Airlines
Sat, Oct 10 - Sun, Oct 18
Multiple Airlines Logo
12:24 pm - 5:00 pmDEN  Denver Intl-USM Ko Samui
38h 36m3 stops Chicago O'Hare Intl Doha Hamad Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
7:00 am - 7:52 pmUSM  Ko Samui-DEN Denver Intl
50h 52m3 stops Bangkok Suvarnabhumi Doha Hamad Intl Dallas/Fort Worth
$1,607Multiple Airlines
Fri, Nov 6 - Sat, Nov 14

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Qatar Airways flights from Denver to Ko Samui

Our best Qatar Airways deals on Denver to Ko Samui flight tickets
Qatar Airways
Oct 10
DEN12:17 pmDenver Intl
32h 03m
3 stops
USM9:20 amKo Samui
Oct 19
USM8:35 pmKo Samui
35h 23m
3 stops
DEN6:58 pmDenver Intl
$1,776
Qatar Airways
Sep 2
DEN2:04 pmDenver Intl
30h 16m
3 stops
USM9:20 amKo Samui
Sep 30
USM3:50 pmKo Samui
35h 27m
3 stops
DEN2:17 pmDenver Intl
$1,893
Qatar Airways
Sep 20
DEN1:05 pmDenver Intl
32h 40m
3 stops
USM10:45 amKo Samui
Sep 27
USM3:25 pmKo Samui
35h 52m
3 stops
DEN2:17 pmDenver Intl
$2,217

Cathay Pacific flights from Denver to Ko Samui

Our best Cathay Pacific deals on Denver to Ko Samui flight tickets
Cathay Pacific
Oct 1
DEN8:22 amDenver Intl
33h 48m
3 stops
USM7:10 amKo Samui
Oct 17
USM11:55 amKo Samui
47h 00m
2 stops
DEN9:55 pmDenver Intl
$1,805
Cathay Pacific
Oct 1
DEN8:22 amDenver Intl
33h 48m
3 stops
USM7:10 amKo Samui
Oct 17
USM11:55 amKo Samui
47h 00m
2 stops
DEN9:55 pmDenver Intl
$1,806
Cathay Pacific
Oct 9
DEN6:42 pmDenver Intl
35h 58m
2 stops
USM7:40 pmKo Samui
Oct 18
USM11:55 amKo Samui
36h 26m
2 stops
DEN11:21 amDenver Intl
$1,812

momondo 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, momondo users made 832,500 searches. Data last updated August 9, 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

Price

Cheapest round-trip

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Wed 9/2

7:45 pm-9:20 am

2 stops24h 35m

Ko Samui

Thu 10/1

6:55 pm-4:58 pm

2 stops35h 03m

$1,196

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Fri 10/30

7:00 pm-10:35 am

2 stops26h 35m

Ko Samui

Sun 11/15

9:10 pm-12:38 pm

2 stops29h 28m

$1,261
Quickest round-trip

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Sat 10/10

7:50 pm-8:15 am

2 stops23h 25m

Ko Samui

Tue 10/20

8:50 pm-12:31 pm

2 stops28h 41m

$1,280

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Sun 1/31

7:10 pm-10:35 am

2 stops25h 25m

Ko Samui

Mon 2/15

8:40 pm-12:38 pm

2 stops29h 58m

$1,281

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Wed 9/2

7:45 pm-10:45 am

2 stops26h 00m

Ko Samui

Tue 9/29

8:50 pm-4:58 pm

2 stops33h 08m

$1,301

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Sat 1/30

7:10 pm-11:40 am

2 stops26h 30m

Ko Samui

Mon 2/15

8:40 pm-12:29 pm

2 stops29h 49m

$1,325

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Tue 2/2

7:10 pm-9:20 am

2 stops24h 10m

Ko Samui

Mon 2/15

8:40 pm-12:38 pm

2 stops29h 58m

$1,330

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Sat 10/10

7:50 pm-8:15 am

2 stops23h 25m

Ko Samui

Mon 10/19

6:15 pm-12:31 pm

2 stops31h 16m

$1,513

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Sat 10/10

7:50 pm-9:20 am

2 stops24h 30m

Ko Samui

Sun 10/18

8:50 pm-2:51 pm

2 stops31h 01m

$1,554

DenverKo Samui

DEN Denver Intl - USM Ko Samui

DENUSM

Denver Intl

Fri 11/6

12:24 pm-5:00 pm

3 stops38h 36m

Ko Samui

Sat 11/14

7:00 am-7:52 pm

3 stops50h 52m

$1,607

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Ko Samui from

How to get the cheapest flight ticket from Denver to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How often are flights from Denver to Ko Samui delayed?

Historically, on average around 17% of flights between Denver and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

What is the most punctual flight time for Denver to Ko Samui flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Denver to Ko Samui flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

When to book flights from Denver to Ko Samui

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Ko Samui according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Ko Samui (DEN to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Ko Samui

Fastest flight time

26h 40m

Direct flights

None
The fastest flight from Denver to Ko Samui takes 26h 40m
There are no direct flights from Denver to Ko Samui. There are no popular flight routes from Denver to Ko Samui.
Search flight deals

Frequently asked questions about flying from Denver to Ko Samui

  • How far is Denver Intl to Ko Samui by plane?

    The distance between Denver Intl and Ko Samui is about 8668.4 mi. By plane, this route typically takes 26h 40m.

  • When did momondo last update prices for flights from Denver Intl Airport to Ko Samui Airport?

    Prices for flights from Denver Intl Airport to Ko Samui Airport were last updated today.

  • How old do you have to be to fly from Denver Intl Airport to Ko Samui Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Denver Intl Airport to Ko Samui Airport.

  • What documentation or ID do you need to fly to Ko Samui Airport?

    The travel and health documents required for your trip to Ko Samui Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ko Samui Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao
Khanom

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Ko Samui?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Denver to Ko Samui. momondo saves you time and could save you money on your trip.

Can I find flights from Denver to Ko Samui with flexible booking policies on momondo?

All flight searches from Denver to Ko Samui on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Denver to Ko Samui?

momondo helps you find the best flight between Denver and Ko Samui by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Denver to Ko Samui right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Denver to Ko Samui now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ko Samui and let you know when they change.

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