When did momondo last update prices for flights from Chicago to Ko Samui Airport?

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

How many operators does momondo search for flights from Chicago to Ko Samui Airport?

As of September 2025, there is 1 operator available to choose from for flights from Chicago to Ko Samui Airport.

How old do you have to be to fly from Chicago to Ko Samui Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago 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.

$66 Cheap Flights from Chicago to Ko Samui in 2025/26

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Find the cheapest flights from Chicago to Ko Samui

Round-trip

One-way

Cheap round-trip flights

12:30 am - 3:35 pmORD-USM

27h 05m2 stops

9:35 am - 7:35 pmUSM-ORD

23h 00m2 stops

$1,037EVA Air

Find Deal

Sun, Oct 26 - Tue, Nov 18

7:50 pm - 1:10 pmORD-USM

29h 20m2 stops

7:35 pm - 10:05 amUSM-ORD

27h 30m2 stops

$1,038Turkish Airlines

Find Deal

Tue, Oct 21 - Wed, Nov 12

12:30 am - 1:45 pmORD-USM

25h 15m2 stops

9:35 am - 7:35 pmUSM-ORD

23h 00m2 stops

$1,039EVA Air

Find Deal

Mon, Oct 20 - Thu, Nov 13

8:20 pm - 3:40 pmORD-USM

30h 20m2 stops

8:20 pm - 2:41 pmUSM-ORD

30h 21m2 stops

$1,051Multiple Airlines

Find Deal

Fri, Mar 6 - Sun, Mar 15

11:50 am - 7:45 amORD-USM

30h 55m2 stops

8:20 pm - 6:25 pmUSM-ORD

35h 05m2 stops

$1,057Multiple Airlines

Find Deal

Sun, Nov 30 - Sat, Dec 6

1:55 pm - 8:15 amORD-USM

30h 20m2 stops

2:05 pm - 7:55 amUSM-ORD

30h 50m2 stops

$1,085Etihad Airways

Find Deal

Sun, Oct 19 - Tue, Nov 11

1:55 pm - 8:15 amORD-USM

30h 20m2 stops

6:15 pm - 7:55 amUSM-ORD

26h 40m2 stops

$1,109Etihad Airways

Find Deal

Tue, Oct 21 - Fri, Nov 14

8:35 pm - 9:10 pmORD-USM

36h 35m2 stops

4:25 pm - 3:45 pmUSM-ORD

35h 20m2 stops

$1,835Emirates

Find Deal

Thu, Oct 2 - Mon, Oct 6

7:00 am - 6:15 pmORD-USM

47h 15m3 stops

4:25 pm - 9:52 pmUSM-ORD

42h 27m3 stops

$2,039Singapore Airlines

Find Deal

Tue, Oct 28 - Tue, Nov 18

1:35 pm - 6:15 pmORD-USM

40h 40m3 stops

4:25 pm - 4:57 pmUSM-ORD

37h 32m2 stops

$2,534Singapore Airlines

Find Deal

Wed, Oct 22 - Wed, Nov 12

Turkish Airlines flights from Chicago to Ko Samui

Our best Turkish Airlines deals on Chicago to Ko Samui flight tickets

Turkish Airlines

Oct 21

ORD7:50 pmChicago O'Hare Intl

29h 20m

2 stops

USM1:10 pmKo Samui

Nov 12

USM7:35 pmKo Samui

27h 30m

2 stops

ORD10:05 amChicago O'Hare Intl

$1,038

Find similar

Turkish Airlines

Oct 25

ORD9:20 pmChicago O'Hare Intl

32h 55m

2 stops

USM6:15 pmKo Samui

Nov 10

USM5:05 pmKo Samui

30h 00m

2 stops

ORD10:05 amChicago O'Hare Intl

$1,150

Find similar

Turkish Airlines

Nov 1

ORD9:20 pmChicago O'Hare Intl

32h 55m

2 stops

USM6:15 pmKo Samui

Nov 7

USM4:25 pmKo Samui

30h 40m

2 stops

ORD10:05 amChicago O'Hare Intl

$1,161

Find similar

EVA Air flights from Chicago to Ko Samui

Our best EVA Air deals on Chicago to Ko Samui flight tickets

EVA Air

Oct 26

ORD12:30 amChicago O'Hare Intl

27h 05m

2 stops

USM3:35 pmKo Samui

Nov 18

USM9:35 amKo Samui

23h 00m

2 stops

ORD7:35 pmChicago O'Hare Intl

$1,037

Find similar

EVA Air

Oct 20

ORD12:30 amChicago O'Hare Intl

25h 15m

2 stops

USM1:45 pmKo Samui

Nov 13

USM9:35 amKo Samui

23h 00m

2 stops

ORD7:35 pmChicago O'Hare Intl

$1,039

Find similar

EVA Air

Sep 30

ORD12:30 amChicago O'Hare Intl

26h 15m

2 stops

USM2:45 pmKo Samui

Oct 31

USM10:00 amKo Samui

22h 35m

2 stops

ORD8:35 pmChicago O'Hare Intl

$1,075

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 10/26

12:30 am-3:35 pm

2 stops27h 05m

Ko Samui

Tue 11/18

9:35 am-7:35 pm

2 stops23h 00m

$1,037

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 10/21

7:50 pm-1:10 pm

2 stops29h 20m

Ko Samui

Wed 11/12

7:35 pm-10:05 am

2 stops27h 30m

$1,038

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 10/20

12:30 am-1:45 pm

2 stops25h 15m

Ko Samui

Thu 11/13

9:35 am-7:35 pm

2 stops23h 00m

$1,039

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 3/6

8:20 pm-3:40 pm

2 stops30h 20m

Ko Samui

Sun 3/15

8:20 pm-2:41 pm

2 stops30h 21m

$1,051

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 11/30

11:50 am-7:45 am

2 stops30h 55m

Ko Samui

Sat 12/6

8:20 pm-6:25 pm

2 stops35h 05m

$1,057

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 10/19

1:55 pm-8:15 am

2 stops30h 20m

Ko Samui

Tue 11/11

2:05 pm-7:55 am

2 stops30h 50m

$1,085

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 10/21

1:55 pm-8:15 am

2 stops30h 20m

Ko Samui

Fri 11/14

6:15 pm-7:55 am

2 stops26h 40m

$1,109

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 10/2

8:35 pm-9:10 pm

2 stops36h 35m

Ko Samui

Mon 10/6

4:25 pm-3:45 pm

2 stops35h 20m

$1,835

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 10/28

7:00 am-6:15 pm

3 stops47h 15m

Ko Samui

Tue 11/18

4:25 pm-9:52 pm

3 stops42h 27m

$2,039

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 10/22

1:35 pm-6:15 pm

3 stops40h 40m

Ko Samui

Wed 11/12

4:25 pm-4:57 pm

2 stops37h 32m

$2,534

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Chicago 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 Friday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $254. Flights from Chicago to Ko Samui on a Sunday will generally be more expensive and average around $484. 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 Chicago to Ko Samui flights are usually those with departure times in the evening. Our users have found flights to Ko Samui in the evening for as low as $199. In the afternoon is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $545 per ticket.

When to book flights from Chicago to Ko Samui

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

Estimated round-trip price

Cheap Chicago to Ko Samui (CHI to USM) flight deals and tips

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

Direct flights	None

There are no direct flights from Chicago to Ko Samui. There are no popular flight routes from Chicago to Ko Samui.

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How far is Chicago to Ko Samui by plane?
There are 8846.2 mi between Chicago and Ko Samui. 24h 50m is a normal flight duration for this route.
When did momondo last update prices for flights from Chicago to Ko Samui Airport?
Prices for flights from Chicago to Ko Samui Airport were last updated today.
How many operators does momondo search for flights from Chicago to Ko Samui Airport?
As of September 2025, there is 1 operator available to choose from for flights from Chicago to Ko Samui Airport.
How old do you have to be to fly from Chicago to Ko Samui Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago 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.
What is the most popular airline from Chicago to Ko Samui?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Chicago to Ko Samui is EVA Air (100% of total bookings).

Best airlines flying from Chicago to Ko Samui

Compare and see reviews for airlines that fly from Chicago to Ko Samui with momondo

Airline	Rating	Free Cancellation	Price
EVA Air	PriceFrom $1,112	Free Cancellation	Rating 8.4 1,237 reviews		Search EVA Air flights

Ko Pha Ngan

Ko Tao

Khanom

Why use momondo?

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

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

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

Yes. momondo enables you to select and highlight flights to Ko Samui from Chicago with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ko Samui from Chicago.

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

Yes momondo offers price alerts on flights to Ko Samui from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.