How often are flights from Chicago to Ko Samui delayed?

Historically, on average around 21% of flights between Chicago and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 141 minutes.

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

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

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

Saturday 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.

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

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

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 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.

$487 Cheap Flights from Chicago to Ko Samui in 2026/27

Find the cheapest flights from Chicago to Ko Samui

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:15 pm - 7:40 pmORD Chicago O'Hare Intl-USM Ko Samui

39h 25m1 stop Hong Kong Intl

11:55 am - 1:55 pmUSM Ko Samui-ORD Chicago O'Hare Intl

38h 00m1 stop Hong Kong Intl

$867Cathay Pacific

Thu, Apr 15 - Sun, Apr 25

4:15 pm - 7:10 amORD Chicago O'Hare Intl-USM Ko Samui

26h 55m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:55 am - 1:55 pmUSM Ko Samui-ORD Chicago O'Hare Intl

38h 00m1 stop Hong Kong Intl

$868Multiple Airlines

Thu, Apr 15 - Sun, Apr 25

4:15 pm - 8:15 amORD Chicago O'Hare Intl-USM Ko Samui

28h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:55 am - 1:55 pmUSM Ko Samui-ORD Chicago O'Hare Intl

38h 00m1 stop Hong Kong Intl

$912Multiple Airlines

Thu, Apr 1 - Wed, Apr 14

4:15 pm - 7:10 amORD Chicago O'Hare Intl-USM Ko Samui

26h 55m2 stops Hong Kong Intl Bangkok Suvarnabhumi

3:50 pm - 1:55 pmUSM Ko Samui-ORD Chicago O'Hare Intl

34h 05m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$915Multiple Airlines

Thu, Apr 15 - Sun, Apr 25

2:10 pm - 8:05 amORD Chicago O'Hare Intl-USM Ko Samui

28h 55m2 stops Hong Kong Intl Bangkok Suvarnabhumi

4:30 pm - 12:30 pmUSM Ko Samui-ORD Chicago O'Hare Intl

33h 00m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$920Multiple Airlines

Fri, Feb 5 - Mon, Mar 1

2:10 pm - 7:35 pmORD Chicago O'Hare Intl-USM Ko Samui

40h 25m1 stop Hong Kong Intl

11:40 am - 12:30 pmUSM Ko Samui-ORD Chicago O'Hare Intl

37h 50m1 stop Hong Kong Intl

$952Cathay Pacific

Sun, Nov 15 - Sat, Nov 28

4:15 pm - 7:10 amORD Chicago O'Hare Intl-USM Ko Samui

26h 55m2 stops Hong Kong Intl Bangkok Suvarnabhumi

7:50 am - 1:55 pmUSM Ko Samui-ORD Chicago O'Hare Intl

42h 05m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$954Cathay Pacific

Thu, Apr 1 - Wed, Apr 14

2:10 pm - 7:10 amORD Chicago O'Hare Intl-USM Ko Samui

28h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:40 am - 12:30 pmUSM Ko Samui-ORD Chicago O'Hare Intl

37h 50m1 stop Hong Kong Intl

$958Cathay Pacific

Tue, Nov 24 - Tue, Dec 8

2:10 pm - 7:10 amORD Chicago O'Hare Intl-USM Ko Samui

28h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:40 am - 12:30 pmUSM Ko Samui-ORD Chicago O'Hare Intl

37h 50m1 stop Hong Kong Intl

$959Cathay Pacific

Tue, Nov 24 - Tue, Dec 8

2:10 pm - 6:55 amORD Chicago O'Hare Intl-USM Ko Samui

27h 45m2 stops Hong Kong Intl Bangkok Suvarnabhumi

9:15 am - 1:55 pmUSM Ko Samui-ORD Chicago O'Hare Intl

40h 40m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$963Multiple Airlines

Sun, Jan 31 - Sat, Apr 3

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Cathay Pacific flights from Chicago to Ko Samui

Our best Cathay Pacific deals on Chicago to Ko Samui flight tickets

Cathay Pacific

Apr 15

ORD4:15 pmChicago O'Hare Intl

39h 25m

1 stop

USM7:40 pmKo Samui

Apr 25

USM11:55 amKo Samui

38h 00m

1 stop

ORD1:55 pmChicago O'Hare Intl

$867

Cathay Pacific

Nov 15

ORD2:10 pmChicago O'Hare Intl

40h 25m

1 stop

USM7:35 pmKo Samui

Nov 28

USM11:40 amKo Samui

37h 50m

1 stop

ORD12:30 pmChicago O'Hare Intl

$952

Cathay Pacific

Apr 1

ORD4:15 pmChicago O'Hare Intl

26h 55m

2 stops

USM7:10 amKo Samui

Apr 14

USM7:50 amKo Samui

42h 05m

2 stops

ORD1:55 pmChicago O'Hare Intl

$954

Turkish Airlines flights from Chicago to Ko Samui

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

Turkish Airlines

Nov 11

ORD8:15 pmChicago O'Hare Intl

28h 35m

2 stops

USM1:50 pmKo Samui

Nov 15

USM4:25 pmKo Samui

30h 35m

2 stops

ORD10:00 amChicago O'Hare Intl

$1,289

Turkish Airlines

Jan 9

ORD8:15 pmChicago O'Hare Intl

33h 00m

2 stops

USM6:15 pmKo Samui

Apr 3

USM1:30 pmKo Samui

32h 05m

2 stops

ORD9:35 amChicago O'Hare Intl

$1,433

Turkish Airlines

Nov 13

ORD11:45 amChicago O'Hare Intl

41h 40m

2 stops

USM6:25 pmKo Samui

Nov 17

USM6:40 pmKo Samui

28h 20m

2 stops

ORD10:00 amChicago O'Hare Intl

$1,467

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Thu 4/15

4:15 pm-7:40 pm

1 stop39h 25m

Ko Samui

Sun 4/25

11:55 am-1:55 pm

1 stop38h 00m

$867

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Thu 4/15

4:15 pm-7:10 am

2 stops26h 55m

Ko Samui

Sun 4/25

11:55 am-1:55 pm

1 stop38h 00m

$868

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Thu 4/1

4:15 pm-8:15 am

2 stops28h 00m

Ko Samui

Wed 4/14

11:55 am-1:55 pm

1 stop38h 00m

$912

Quickest round-trip

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Thu 4/15

4:15 pm-7:10 am

2 stops26h 55m

Ko Samui

Sun 4/25

3:50 pm-1:55 pm

2 stops34h 05m

$915

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Fri 2/5

2:10 pm-8:05 am

2 stops28h 55m

Ko Samui

Mon 3/1

4:30 pm-12:30 pm

2 stops33h 00m

$920

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Sun 11/15

2:10 pm-7:35 pm

1 stop40h 25m

Ko Samui

Sat 11/28

11:40 am-12:30 pm

1 stop37h 50m

$952

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Thu 4/1

4:15 pm-7:10 am

2 stops26h 55m

Ko Samui

Wed 4/14

7:50 am-1:55 pm

2 stops42h 05m

$954

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Tue 11/24

2:10 pm-7:10 am

2 stops28h 00m

Ko Samui

Tue 12/8

11:40 am-12:30 pm

1 stop37h 50m

$958

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Tue 11/24

2:10 pm-7:10 am

2 stops28h 00m

Ko Samui

Tue 12/8

11:40 am-12:30 pm

1 stop37h 50m

$959

ChicagoKo Samui

ORD Chicago O'Hare Intl - USM Ko Samui

ORDUSM

Chicago O'Hare Intl

Sun 1/31

2:10 pm-6:55 am

2 stops27h 45m

Ko Samui

Sat 4/3

9:15 am-1:55 pm

2 stops40h 40m

$963

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted 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

Airlines

Delays

What is the cheapest airline that flies from Chicago to Ko Samui?

Cathay Pacific is the most popular carrier operating from Chicago to Ko Samui

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

Best Price Found	$487
Fastest flight time	27h 45m
Direct flights	None

The best one-way flight to Ko Samui from Chicago in the past 72 hours is $487. The best round-trip flight deal from Chicago to Ko Samui found on momondo in the last 72 hours is $867.

The fastest flight from Chicago to Ko Samui takes 27h 45m

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

Search flight deals

Frequently asked questions about flying from Chicago to Ko Samui

How far is Chicago to Ko Samui by plane?
There are 8846.2 mi between Chicago and Ko Samui. 27h 45m 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 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.

Ko Tao

Ko Pha Ngan

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.

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sun 11/29

Sun 12/6

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand

Nearby airports

Cabin classes

Other Thailand destinations

Other flights from Chicago

Complete your trip

Feeling lucky

Cheap flights from Chicago to Ko Samui from $487

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Ko Samui departing on 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Chicago to Ko Samui

Cheap round-trip flights

Cheap one-way flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Cathay Pacific flights from Chicago to Ko Samui

Our best Cathay Pacific deals on Chicago to Ko Samui flight tickets

Turkish Airlines flights from Chicago to Ko Samui

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

momondo Fare Finder

Use the filters below to find and compare flights from Chicago to Ko Samui that are best for you.

See travel insights to Ko Samui from

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

What is the cheapest airline that flies from Chicago to Ko Samui?

How often are flights from Chicago to Ko Samui delayed?

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

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

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

When to book flights from Chicago to Ko Samui

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Chicago to Ko Samui

Traveling to a place near Ko Samui?

Why use momondo?

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

Airports servicing Thailand

Cabin classes currently available on flights to Ko Samui

List of cabin classes available on flights landing in Ko Samui. Availability may vary depending on flight origin and airline.

Popular cities in Thailand

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Chicago

According to popular flight searches on momondo this year

Complete your trip to Ko Samui

Explore popular destinations other users love

According to popular flight searches on momondo this year