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

According to our data, Southwest have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

How often are flights from Chicago to Ko Samui delayed?

Historically, on average around 19% 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 134 minutes.

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.

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. Monday has historically seen more delays on average compared to the rest of the week.

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.

$800 Cheap Flights from Chicago to Ko Samui in 2026

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.

2:00 pm - 7:10 am

ORD

USM

29h 10m

2 stops

3:25 pm - 8:35 am

USM

ORD

29h 10m

2 stops

$1,073Multiple Airlines

Mon, Sep 14 - Sun, Sep 20

10:20 am - 7:10 am

ORD

USM

31h 50m

2 stops

5:05 pm - 7:30 am

USM

ORD

27h 25m

2 stops

$1,190Multiple Airlines

Wed, Dec 2 - Tue, Dec 15

11:30 pm - 5:00 pm

ORD

USM

28h 30m

2 stops

7:00 am - 7:35 pm

USM

ORD

25h 35m

2 stops

$1,216EVA Air

Tue, Nov 24 - Tue, Dec 8

9:10 pm - 2:45 pm

ORD

USM

29h 35m

2 stops

5:35 pm - 8:55 am

USM

ORD

27h 20m

2 stops

$1,242Multiple Airlines

Sun, Oct 18 - Sat, Oct 24

12:30 am - 3:10 pm

ORD

USM

26h 40m

2 stops

8:35 pm - 8:35 pm

USM

ORD

36h 00m

2 stops

$1,292EVA Air

Sat, Oct 17 - Sat, Oct 24

10:35 pm - 9:05 pm

ORD

USM

33h 30m

2 stops

1:25 pm - 1:10 pm

USM

ORD

36h 45m

2 stops

$1,322Lufthansa

Wed, Dec 2 - Tue, Dec 15

11:50 am - 7:10 am

ORD

USM

31h 20m

2 stops

8:20 am - 8:40 am

USM

ORD

36h 20m

2 stops

$1,348Multiple Airlines

Tue, Aug 11 - Tue, Aug 18

9:50 am - 8:15 am

ORD

USM

34h 25m

3 stops

6:55 pm - 2:43 pm

USM

ORD

31h 48m

2 stops

$1,376Multiple Airlines

Mon, Sep 14 - Sun, Sep 20

2:35 pm - 9:10 pm

ORD

USM

42h 35m

2 stops

1:30 pm - 6:56 am

USM

ORD

29h 26m

2 stops

$1,391Multiple Airlines

Mon, Aug 17 - Tue, Aug 25

5:45 pm - 3:10 pm

ORD

USM

33h 25m

2 stops

10:00 am - 8:40 am

USM

ORD

34h 40m

2 stops

$1,423Multiple Airlines

Mon, Aug 17 - Sat, Aug 29

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EVA Air flights from Chicago to Ko Samui

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

EVA Air

Nov 24

ORD11:30 pmChicago O'Hare Intl

28h 30m

2 stops

USM5:00 pmKo Samui

Dec 8

USM7:00 amKo Samui

25h 35m

2 stops

ORD7:35 pmChicago O'Hare Intl

$1,216

EVA Air

Oct 17

ORD12:30 amChicago O'Hare Intl

26h 40m

2 stops

USM3:10 pmKo Samui

Oct 24

USM8:35 pmKo Samui

36h 00m

2 stops

ORD8:35 pmChicago O'Hare Intl

$1,292

EVA Air

Aug 8

ORD12:30 amChicago O'Hare Intl

32h 00m

2 stops

USM8:30 pmKo Samui

Aug 30

USM5:50 pmKo Samui

39h 20m

2 stops

ORD9:10 pmChicago O'Hare Intl

$1,474

Etihad Airways flights from Chicago to Ko Samui

Our best Etihad Airways deals on Chicago to Ko Samui flight tickets

Etihad Airways

Aug 13

ORD2:00 pmChicago O'Hare Intl

29h 35m

2 stops

USM7:35 amKo Samui

Aug 20

USM5:55 pmKo Samui

26h 40m

2 stops

ORD8:35 amChicago O'Hare Intl

$1,456

Etihad Airways

Aug 14

ORD2:00 pmChicago O'Hare Intl

32h 30m

2 stops

USM10:30 amKo Samui

Aug 21

USM5:25 pmKo Samui

27h 10m

2 stops

ORD8:35 amChicago O'Hare Intl

$1,496

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 9/14

2:00 pm-7:10 am

2 stops29h 10m

Ko Samui

Sun 9/20

3:25 pm-8:35 am

2 stops29h 10m

$1,073

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 12/2

10:20 am-7:10 am

2 stops31h 50m

Ko Samui

Tue 12/15

5:05 pm-7:30 am

2 stops27h 25m

$1,190

Quickest round-trip

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 11/24

11:30 pm-5:00 pm

2 stops28h 30m

Ko Samui

Tue 12/8

7:00 am-7:35 pm

2 stops25h 35m

$1,216

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 10/18

9:10 pm-2:45 pm

2 stops29h 35m

Ko Samui

Sat 10/24

5:35 pm-8:55 am

2 stops27h 20m

$1,242

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sat 10/17

12:30 am-3:10 pm

2 stops26h 40m

Ko Samui

Sat 10/24

8:35 pm-8:35 pm

2 stops36h 00m

$1,292

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 12/2

10:35 pm-9:05 pm

2 stops33h 30m

Ko Samui

Tue 12/15

1:25 pm-1:10 pm

2 stops36h 45m

$1,322

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 8/11

11:50 am-7:10 am

2 stops31h 20m

Ko Samui

Tue 8/18

8:20 am-8:40 am

2 stops36h 20m

$1,348

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 9/14

9:50 am-8:15 am

3 stops34h 25m

Ko Samui

Sun 9/20

6:55 pm-2:43 pm

2 stops31h 48m

$1,376

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 8/17

2:35 pm-9:10 pm

2 stops42h 35m

Ko Samui

Tue 8/25

1:30 pm-6:56 am

2 stops29h 26m

$1,391

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 8/17

5:45 pm-3:10 pm

2 stops33h 25m

Ko Samui

Sat 8/29

10:00 am-8:40 am

2 stops34h 40m

$1,423

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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?

EVA Air, Cathay Pacific, and Malaysia Airlines are the most popular carriers 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

Fastest flight time	26h 30m
Direct flights	None

The fastest flight from Chicago to Ko Samui takes 26h 30m

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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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. 26h 30m 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 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.

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Cheap flights from Chicago to Ko Samui from $800

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 8/13. 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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EVA Air flights from Chicago to Ko Samui

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

Etihad Airways flights from Chicago to Ko Samui

Our best Etihad Airways deals on Chicago to Ko Samui flight tickets

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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

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

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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

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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.

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