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 129 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 at night 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. Friday has historically seen more delays on average compared to the rest of the week.

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 13% of their flights experiencing any sort of delay.

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Ko Samui Airport?

Prices for flights from Chicago O'Hare Intl Airport to Ko Samui Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Ko Samui Airport?

As of April 2026, there is 1 operator available to choose from for flights from Chicago O'Hare Intl Airport to Ko Samui Airport.

How old do you have to be to fly from Chicago O'Hare Intl Airport to Ko Samui Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare 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.

$82 Cheap Flights from Chicago O'Hare Intl Airport to Ko Samui in 2026

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Find the cheapest flights from Chicago O'Hare Intl Airport to Ko Samui

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:00 pm - 9:35 pm

ORD

USM

43h 35m

2 stops

7:50 am - 8:35 am

USM

ORD

36h 45m

2 stops

$958Multiple Airlines

Wed, May 13 - Wed, May 20

2:00 pm - 8:50 pm

ORD

USM

42h 50m

2 stops

6:00 am - 8:35 am

USM

ORD

38h 35m

2 stops

$1,030Multiple Airlines

Fri, May 1 - Fri, May 8

2:00 pm - 7:40 pm

ORD

USM

41h 40m

2 stops

5:55 pm - 8:35 am

USM

ORD

26h 40m

2 stops

$1,259Multiple Airlines

Thu, May 14 - Thu, May 21

2:00 pm - 8:30 pm

ORD

USM

42h 30m

2 stops

6:00 am - 8:35 am

USM

ORD

38h 35m

2 stops

$1,406Multiple Airlines

Sat, May 16 - Sat, May 23

2:00 pm - 7:10 am

ORD

USM

29h 10m

2 stops

11:55 am - 1:55 pm

USM

ORD

38h 00m

1 stop

$1,638Multiple Airlines

Wed, May 13 - Wed, May 20

2:00 pm - 7:40 pm

ORD

USM

41h 40m

2 stops

11:55 am - 1:55 pm

USM

ORD

38h 00m

1 stop

$1,743Multiple Airlines

Thu, May 14 - Thu, May 21

3:40 pm - 11:15 am

ORD

USM

31h 35m

2 stops

6:00 am - 5:59 am

USM

ORD

35h 59m

3 stops

$1,777Multiple Airlines

Sat, May 16 - Sat, May 23

2:15 pm - 1:45 pm

ORD

USM

35h 30m

3 stops

2:30 pm - 9:40 am

USM

ORD

31h 10m

2 stops

$1,814Multiple Airlines

Thu, May 14 - Thu, May 21

2:00 pm - 8:15 am

ORD

USM

30h 15m

2 stops

11:55 am - 1:55 pm

USM

ORD

38h 00m

1 stop

$1,885Multiple Airlines

Fri, May 1 - Fri, May 8

8:35 pm - 1:45 pm

ORD

USM

29h 10m

3 stops

8:45 am - 9:00 pm

USM

ORD

24h 15m

2 stops

$1,888Multiple Airlines

Fri, May 1 - Fri, May 8

EVA Air flights from Chicago O'Hare Intl Airport to Ko Samui

Our best EVA Air deals on Chicago O'Hare Intl Airport to Ko Samui flight tickets

EVA Air

Sep 13

ORD12:30 amChicago O'Hare Intl

25h 15m

2 stops

USM1:45 pmKo Samui

Sep 28

USM9:00 pmKo Samui

35h 45m

2 stops

ORD8:45 pmChicago O'Hare Intl

$1,039

EVA Air

Sep 26

ORD12:30 amChicago O'Hare Intl

26h 40m

2 stops

USM3:10 pmKo Samui

Sep 30

USM7:50 amKo Samui

24h 55m

2 stops

ORD8:45 pmChicago O'Hare Intl

$1,202

EVA Air

Sep 5

ORD12:30 amChicago O'Hare Intl

25h 15m

2 stops

USM1:45 pmKo Samui

Sep 12

USM11:45 amKo Samui

29h 54m

3 stops

ORD5:39 amChicago O'Hare Intl

$1,393

Malaysia Airlines flights from Chicago O'Hare Intl Airport to Ko Samui

Our best Malaysia Airlines deals on Chicago O'Hare Intl Airport to Ko Samui flight tickets

Malaysia Airlines

Sep 14

ORD7:20 pmChicago O'Hare Intl

33h 15m

3 stops

USM4:35 pmKo Samui

Sep 28

USM3:25 pmKo Samui

27h 55m

3 stops

ORD7:20 amChicago O'Hare Intl

$2,444

Malaysia Airlines

May 13

ORD7:20 pmChicago O'Hare Intl

33h 15m

3 stops

USM4:35 pmKo Samui

May 20

USM2:30 pmKo Samui

29h 15m

3 stops

ORD7:45 amChicago O'Hare Intl

$2,961

Malaysia Airlines

May 16

ORD5:55 pmChicago O'Hare Intl

31h 50m

3 stops

USM1:45 pmKo Samui

May 23

USM2:35 pmKo Samui

29h 10m

3 stops

ORD7:45 amChicago O'Hare Intl

$3,278

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 5/13

2:00 pm-9:35 pm

2 stops43h 35m

Ko Samui

Wed 5/20

7:50 am-8:35 am

2 stops36h 45m

$958

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 5/1

2:00 pm-8:50 pm

2 stops42h 50m

Ko Samui

Fri 5/8

6:00 am-8:35 am

2 stops38h 35m

$1,030

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 5/14

2:00 pm-7:40 pm

2 stops41h 40m

Ko Samui

Thu 5/21

5:55 pm-8:35 am

2 stops26h 40m

$1,259

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sat 5/16

2:00 pm-8:30 pm

2 stops42h 30m

Ko Samui

Sat 5/23

6:00 am-8:35 am

2 stops38h 35m

$1,406

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 5/13

2:00 pm-7:10 am

2 stops29h 10m

Ko Samui

Wed 5/20

11:55 am-1:55 pm

1 stop38h 00m

$1,638

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 5/14

2:00 pm-7:40 pm

2 stops41h 40m

Ko Samui

Thu 5/21

11:55 am-1:55 pm

1 stop38h 00m

$1,743

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sat 5/16

3:40 pm-11:15 am

2 stops31h 35m

Ko Samui

Sat 5/23

6:00 am-5:59 am

3 stops35h 59m

$1,777

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 5/14

2:15 pm-1:45 pm

3 stops35h 30m

Ko Samui

Thu 5/21

2:30 pm-9:40 am

2 stops31h 10m

$1,814

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 5/1

2:00 pm-8:15 am

2 stops30h 15m

Ko Samui

Fri 5/8

11:55 am-1:55 pm

1 stop38h 00m

$1,885

Quickest round-trip

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 5/1

8:35 pm-1:45 pm

3 stops29h 10m

Ko Samui

Fri 5/8

8:45 am-9:00 pm

2 stops24h 15m

$1,888

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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

Prices

Delays

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 O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport to Ko Samui

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

Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Ko Samui (ORD to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Ko Samui

Fastest flight time	24h 10m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Ko Samui takes 24h 10m

There are no direct flights from Chicago O'Hare Intl Airport to Ko Samui. There are no popular flight routes from Chicago O'Hare Intl Airport to Ko Samui.

Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Ko Samui

How far is Chicago O'Hare Intl to Ko Samui by plane?
There are 8836.7 mi between Chicago O'Hare Intl and Ko Samui. Typically, this will take 24h 10m by plane in normal conditions.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Ko Samui Airport?
Prices for flights from Chicago O'Hare Intl Airport to Ko Samui Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Ko Samui Airport?
As of April 2026, there is 1 operator available to choose from for flights from Chicago O'Hare Intl Airport to Ko Samui Airport.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Ko Samui Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare 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.
What is the most popular airline from Chicago O'Hare Intl Airport to Ko Samui?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and Ko Samui, the leading airline is EVA Air, making up 100% of the total bookings.

Best airlines flying from Chicago O'Hare Intl Airport to Ko Samui

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Ko Samui with momondo

Airline	Rating	Free Cancellation	Price
EVA Air	PriceFrom $1,031	Free Cancellation	Rating 8.5 1,399 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. All flights to Ko Samui from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are not ready to book a flight from Chicago 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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Cheap flights from Chicago O'Hare Intl Airport to Ko Samui from $958

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EVA Air flights from Chicago O'Hare Intl Airport to Ko Samui

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Our best Malaysia Airlines deals on Chicago O'Hare Intl Airport to Ko Samui flight tickets

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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Ko Samui

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

What is the cheapest time of day to depart on your flight 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 O'Hare Intl Airport to Ko Samui

Cheap Chicago O'Hare Intl Airport to Ko Samui (ORD to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Ko Samui

Fastest flight time

Direct flights

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Ko Samui

Best airlines flying from Chicago O'Hare Intl Airport to Ko Samui

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Ko Samui with momondo

Traveling to a place near Ko Samui?

Why use momondo?

An easier way to manage your Ko Samui trip

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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

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