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 August 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

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Find the cheapest flights from Chicago to Ko Samui

Round-trip

One-way

Cheap round-trip flights

11:50 am - 3:35 pmORD-USM

38h 45m2 stops

7:00 am - 10:05 amUSM-ORD

40h 05m2 stops

$1,034Turkish Airlines

Find Deal

Sat, Feb 21 - Sun, Mar 8

11:50 am - 10:35 amORD-USM

33h 45m2 stops

1:45 pm - 10:05 amUSM-ORD

33h 20m2 stops

$1,096Turkish Airlines

Find Deal

Sun, Dec 7 - Fri, Dec 26

11:50 am - 7:10 amORD-USM

30h 20m2 stops

8:30 pm - 6:25 pmUSM-ORD

34h 55m2 stops

$1,143

Find Deal

Sun, Nov 30 - Sat, Dec 6

7:50 pm - 8:15 amORD-USM

24h 25m2 stops

5:35 pm - 9:40 amUSM-ORD

28h 05m2 stops

$1,146Turkish Airlines

Find Deal

Sun, Sep 28 - Thu, Oct 2

12:30 am - 3:45 pmORD-USM

27h 15m2 stops

8:45 am - 8:45 pmUSM-ORD

24h 00m2 stops

$1,203EVA Air

Find Deal

Sat, Sep 27 - Thu, Oct 2

12:30 am - 2:45 pmORD-USM

26h 15m2 stops

8:45 am - 8:45 pmUSM-ORD

24h 00m2 stops

$1,229EVA Air

Find Deal

Thu, Oct 9 - Fri, Oct 17

1:55 pm - 7:20 amORD-USM

29h 25m2 stops

8:00 am - 8:45 amUSM-ORD

36h 45m2 stops

$1,311

Find Deal

Fri, Oct 10 - Fri, Oct 17

4:00 pm - 6:35 pmORD-USM

38h 35m1 stop

10:55 am - 2:25 pmUSM-ORD

39h 30m1 stop

$1,632Cathay Pacific

Find Deal

Fri, Oct 10 - Fri, Oct 17

6:50 pm - 9:05 pmORD-USM

37h 15m2 stops

4:25 pm - 9:33 pmUSM-ORD

41h 08m3 stops

$2,046Singapore Airlines

Find Deal

Sat, Feb 21 - Sun, Mar 8

4:00 pm - 8:30 pmORD-USM

40h 30m2 stops

10:55 am - 2:25 pmUSM-ORD

39h 30m1 stop

$5,646Cathay Pacific

Find Deal

Tue, Sep 30 - Sun, Oct 19

EVA Air flights from Chicago to Ko Samui

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

EVA Air

Sep 4

ORD12:30 amChicago O'Hare Intl

33h 05m

2 stops

USM9:35 pmKo Samui

Sep 17

USM9:15 amKo Samui

23h 30m

2 stops

ORD8:45 pmChicago O'Hare Intl

$1,076

Find similar

EVA Air

Sep 27

ORD12:30 amChicago O'Hare Intl

27h 15m

2 stops

USM3:45 pmKo Samui

Oct 2

USM8:45 amKo Samui

24h 00m

2 stops

ORD8:45 pmChicago O'Hare Intl

$1,203

Find similar

EVA Air

Oct 9

ORD12:30 amChicago O'Hare Intl

26h 15m

2 stops

USM2:45 pmKo Samui

Oct 17

USM8:45 amKo Samui

24h 00m

2 stops

ORD8:45 pmChicago O'Hare Intl

$1,229

Find similar

Turkish Airlines flights from Chicago to Ko Samui

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

Turkish Airlines

Feb 21

ORD11:50 amChicago O'Hare Intl

38h 45m

2 stops

USM3:35 pmKo Samui

Mar 8

USM7:00 amKo Samui

40h 05m

2 stops

ORD10:05 amChicago O'Hare Intl

$1,034

Find similar

Turkish Airlines

Dec 7

ORD11:50 amChicago O'Hare Intl

33h 45m

2 stops

USM10:35 amKo Samui

Dec 26

USM1:45 pmKo Samui

33h 20m

2 stops

ORD10:05 amChicago O'Hare Intl

$1,096

Find similar

Turkish Airlines

Sep 28

ORD7:50 pmChicago O'Hare Intl

24h 25m

2 stops

USM8:15 amKo Samui

Oct 2

USM5:35 pmKo Samui

28h 05m

2 stops

ORD9:40 amChicago O'Hare Intl

$1,146

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sat 2/21

11:50 am-3:35 pm

2 stops38h 45m

Ko Samui

Sun 3/8

7:00 am-10:05 am

2 stops40h 05m

$1,034

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 12/7

11:50 am-10:35 am

2 stops33h 45m

Ko Samui

Fri 12/26

1:45 pm-10:05 am

2 stops33h 20m

$1,096

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 11/30

11:50 am-7:10 am

2 stops30h 20m

Ko Samui

Sat 12/6

8:30 pm-6:25 pm

2 stops34h 55m

$1,143

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 9/28

7:50 pm-8:15 am

2 stops24h 25m

Ko Samui

Thu 10/2

5:35 pm-9:40 am

2 stops28h 05m

$1,146

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sat 9/27

12:30 am-3:45 pm

2 stops27h 15m

Ko Samui

Thu 10/2

8:45 am-8:45 pm

2 stops24h 00m

$1,203

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 10/9

12:30 am-2:45 pm

2 stops26h 15m

Ko Samui

Fri 10/17

8:45 am-8:45 pm

2 stops24h 00m

$1,229

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 10/10

1:55 pm-7:20 am

2 stops29h 25m

Ko Samui

Fri 10/17

8:00 am-8:45 am

2 stops36h 45m

$1,311

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 10/10

4:00 pm-6:35 pm

1 stop38h 35m

Ko Samui

Fri 10/17

10:55 am-2:25 pm

1 stop39h 30m

$1,632

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sat 2/21

6:50 pm-9:05 pm

2 stops37h 15m

Ko Samui

Sun 3/8

4:25 pm-9:33 pm

3 stops41h 08m

$2,046

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 9/30

4:00 pm-8:30 pm

2 stops40h 30m

Ko Samui

Sun 10/19

10:55 am-2:25 pm

1 stop39h 30m

$5,646

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 25m 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 August 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 1,234 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.