Cheap flights from Denver to Ko Samui from $1,112

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 1/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Denver to Ko Samui

Cheap round-trip flights

 Logo
7:53 pm - 8:25 pmDEN-USM
34h 32m3 stops
 Logo
7:00 am - 7:15 pmUSM-DEN
26h 15m3 stops
$1,112
Find Deal
Tue, Jan 20 - Fri, Feb 6
 Logo
7:20 pm - 8:30 pmDEN-USM
35h 10m2 stops
 Logo
7:00 am - 5:35 pmUSM-DEN
48h 35m2 stops
$1,269
Find Deal
Tue, Jan 20 - Fri, Feb 6
 Logo
4:00 pm - 6:30 pmDEN-USM
37h 30m2 stops
 Logo
8:45 am - 8:58 amUSM-DEN
37h 13m3 stops
$1,445
Find Deal
Sat, Sep 20 - Fri, Sep 26
 Logo
6:10 am - 10:30 amDEN-USM
39h 20m3 stops
 Logo
7:00 pm - 10:18 pmUSM-DEN
40h 18m3 stops
$1,540
Find Deal
Mon, Sep 15 - Mon, Sep 22
 Logo
7:52 am - 10:30 amDEN-USM
37h 38m3 stops
 Logo
1:30 pm - 4:33 pmUSM-DEN
40h 03m2 stops
$1,579
Find Deal
Mon, Sep 15 - Mon, Sep 22
Cathay Pacific Logo
9:17 am - 6:35 pmDEN-USM
44h 18m2 stops
Cathay Pacific Logo
10:55 am - 8:27 pmUSM-DEN
46h 32m2 stops
$1,599Cathay Pacific
Find Deal
Mon, Oct 13 - Wed, Oct 22
Cathay Pacific Logo
2:47 pm - 6:35 pmDEN-USM
38h 48m2 stops
Cathay Pacific Logo
10:55 am - 11:05 pmUSM-DEN
25h 10m2 stops
$1,699Cathay Pacific
Find Deal
Sat, Sep 20 - Fri, Sep 26
Singapore Airlines Logo
9:23 pm - 9:10 pmDEN-USM
34h 47m2 stops
Singapore Airlines Logo
1:30 pm - 5:21 pmUSM-DEN
40h 51m2 stops
$1,738Singapore Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
Singapore Airlines Logo
7:58 am - 6:15 pmDEN-USM
44h 17m3 stops
Singapore Airlines Logo
4:25 pm - 5:50 pmUSM-DEN
39h 25m3 stops
$1,793Singapore Airlines
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Sun, Jan 25 - Thu, Feb 12
Qatar Airways Logo
2:17 pm - 10:45 amDEN-USM
31h 28m3 stops
Qatar Airways Logo
3:20 pm - 1:23 pmUSM-DEN
35h 03m3 stops
$2,320Qatar Airways
Find Deal
Sat, Sep 20 - Sat, Oct 4

Cathay Pacific flights from Denver to Ko Samui

Our best Cathay Pacific deals on Denver to Ko Samui flight tickets
Cathay Pacific
Oct 13
DEN9:17 amDenver Intl
44h 18m
2 stops
USM6:35 pmKo Samui
Oct 22
USM10:55 amKo Samui
46h 32m
2 stops
DEN8:27 pmDenver Intl
Cathay Pacific
Sep 20
DEN2:47 pmDenver Intl
38h 48m
2 stops
USM6:35 pmKo Samui
Sep 26
USM10:55 amKo Samui
25h 10m
2 stops
DEN11:05 pmDenver Intl

Singapore Airlines flights from Denver to Ko Samui

Our best Singapore Airlines deals on Denver to Ko Samui flight tickets
Singapore Airlines
Oct 2
DEN9:23 pmDenver Intl
34h 47m
2 stops
USM9:10 pmKo Samui
Oct 6
USM1:30 pmKo Samui
40h 51m
2 stops
DEN5:21 pmDenver Intl
Singapore Airlines
Jan 25
DEN7:58 amDenver Intl
44h 17m
3 stops
USM6:15 pmKo Samui
Feb 12
USM4:25 pmKo Samui
39h 25m
3 stops
DEN5:50 pmDenver Intl
Singapore Airlines
Oct 2
DEN9:23 pmDenver Intl
34h 47m
2 stops
USM9:10 pmKo Samui
Oct 6
USM4:25 pmKo Samui
40h 15m
3 stops
DEN7:40 pmDenver Intl

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 3, 2025.
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

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Tue 1/20

7:53 pm-8:25 pm

3 stops34h 32m

Ko Samui

Fri 2/6

7:00 am-7:15 pm

3 stops26h 15m

$1,112

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Tue 1/20

7:20 pm-8:30 pm

2 stops35h 10m

Ko Samui

Fri 2/6

7:00 am-5:35 pm

2 stops48h 35m

$1,269

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Sat 9/20

4:00 pm-6:30 pm

2 stops37h 30m

Ko Samui

Fri 9/26

8:45 am-8:58 am

3 stops37h 13m

$1,445

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Mon 9/15

6:10 am-10:30 am

3 stops39h 20m

Ko Samui

Mon 9/22

7:00 pm-10:18 pm

3 stops40h 18m

$1,540

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Mon 9/15

7:52 am-10:30 am

3 stops37h 38m

Ko Samui

Mon 9/22

1:30 pm-4:33 pm

2 stops40h 03m

$1,579

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Mon 10/13

9:17 am-6:35 pm

2 stops44h 18m

Ko Samui

Wed 10/22

10:55 am-8:27 pm

2 stops46h 32m

$1,599

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Sat 9/20

2:47 pm-6:35 pm

2 stops38h 48m

Ko Samui

Fri 9/26

10:55 am-11:05 pm

2 stops25h 10m

$1,699

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Thu 10/2

9:23 pm-9:10 pm

2 stops34h 47m

Ko Samui

Mon 10/6

1:30 pm-5:21 pm

2 stops40h 51m

$1,738

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Sun 1/25

7:58 am-6:15 pm

3 stops44h 17m

Ko Samui

Thu 2/12

4:25 pm-5:50 pm

3 stops39h 25m

$1,793

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Sat 9/20

2:17 pm-10:45 am

3 stops31h 28m

Ko Samui

Sat 10/4

3:20 pm-1:23 pm

3 stops35h 03m

$2,320

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

What is the cheapest day to depart on your flight to Ko Samui?

Our data shows that Saturday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $184. Flights from Denver to Ko Samui on a Thursday will generally be more expensive and average around $704. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Denver to Ko Samui flights are usually those with departure times in the afternoon. Our users have found flights to Ko Samui in the afternoon for as low as $196. In the evening is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $355 per ticket.

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

Best Price Found

$1,112

Fastest flight time

25h 30m

Direct flights

None

Airports in Ko Samui

1 airport
The best flight deal from Denver to Ko Samui found on momondo in the last 72 hours is $1,112
The fastest flight from Denver to Ko Samui takes 25h 30m
There are no direct flights from Denver to Ko Samui. Popular non-direct route for this connection is Denver Intl Airport - Ko Samui Airport.
There is 1 airport near Ko Samui: Ko Samui (USM)

  • 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 25h 30m.

  • 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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1 adult
Fri 8/8
Fri 8/15

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