How often are flights from Chicago to Ko Samui delayed?

About 17% of weekly flights between Chicago and Ko Samui have experienced delays in the past year, with the average delay time being 135 minutes.

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

Over the last year, Spirit Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

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

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

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

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

How long is the flight from Chicago O'Hare Intl Airport to Ko Samui?

For as low as $1,068, EVA Air can have you in Ko Samui from Chicago O'Hare Intl Airport in 28h 30m. The distance between Chicago O'Hare Intl Airport and Ko Samui is about 8835 mi.

What is the cheapest airline to fly from Chicago O'Hare Intl Airport to Ko Samui round-trip?

EVA Air, at $1,103, was found to be the cheapest airline from Chicago O'Hare Intl Airport to Ko Samui.. Users have found that EVA Air is 27% cheaper than the other options available to this destination.

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Most accurate provider : When it comes to deals on Chicago O'Hare Intl Airport-Ko Samui flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago O'Hare Intl Airport-Ko Samui flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Ko Samui flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Chicago O'Hare Intl Airport-Ko Samui flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Ko Samui from Chicago O'Hare Intl?

Most people fly into Ko Samui (USM) if they book a flight to Ko Samui from Chicago O'Hare Intl. On average, Ko Samui has 0 inbound flights from Chicago O'Hare Intl per day from 1 airline. Ko Samui is conveniently located just 2.1 mi from Ko Samui’s city center.

Can I find deals for flights from O'Hare Intl to Ko Samui that include hotel bookings?

Yes. In addition to deals on O'Hare Intl to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from O'Hare Intl to Ko Samui?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Ko Samui.

Can I find deals for business class flights from O'Hare Intl to Ko Samui?

Yes. Cheapflights offers flight deals from O'Hare Intl to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$832+ Flights from Chicago O'Hare Intl Airport to Ko Samui

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Cheap flight deals from O'Hare Intl to Ko Samui

Cheapest flights from O'Hare Intl to Ko Samui
Explore the most affordable flight options available from O'Hare Intl to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

Sun 12/711:30 pmORD - USM

2 stops27h 10mEVA Air

Fri 12/268:30 amUSM - ORD

2 stops24h 05mEVA Air

Deal found 12/7

$1,392

Sun 12/75:39 pmORD - USM

2 stops36h 56mMultiple Airlines

Fri 12/2611:40 amUSM - ORD

1 stop38h 15mMultiple Airlines

Deal found 12/7

$4,044

Tue 12/167:45 pmORD - USM

3 stops35h 40mMultiple Airlines

Sat 1/39:00 amUSM - ORD

3 stops35h 35mMultiple Airlines

Deal found 12/7

$4,225

Tue 12/161:10 pmORD - USM

2 stops32h 30mEtihad Airways

Sat 1/31:25 pmUSM - ORD

2 stops31h 10mEtihad Airways

Deal found 12/7

$4,761

Best flights from O'Hare Intl to Ko Samui
Discover carefully curated flight deals from O'Hare Intl to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 9, 2025.

Wed 1/2111:30 pmORD - USM

2 stops28h 30mEVA Air

Wed 1/287:15 amUSM - ORD

2 stops25h 20mEVA Air

Deal found 12/7

$1,068

Sun 3/82:10 pmORD - USM

2 stops29h 20mMultiple Airlines

Wed 3/188:30 amUSM - ORD

2 stops36h 05mMultiple Airlines

Deal found 12/8

$1,076

Wed 1/212:35 pmORD - USM

1 stop40h 00mCathay Pacific

Wed 1/2811:40 amUSM - ORD

1 stop38h 15mCathay Pacific

Deal found 12/7

$1,346

Fri 2/611:30 pmORD - USM

2 stops27h 55mEVA Air

Sun 2/158:30 pmUSM - ORD

2 stops36h 05mEVA Air

Deal found 12/8

$1,126

Fri 1/231:10 pmORD - USM

2 stops29h 25mMultiple Airlines

Fri 1/308:50 amUSM - ORD

2 stops59h 45mMultiple Airlines

Deal found 12/9

$1,158

Sun 2/811:30 pmORD - USM

2 stops27h 05mEVA Air

Sun 2/158:30 pmUSM - ORD

2 stops36h 05mEVA Air

Deal found 12/8

$1,126

Sun 3/18:20 pmORD - USM

2 stops25h 20mMultiple Airlines

Sat 3/74:25 pmUSM - ORD

2 stops54h 40mMultiple Airlines

Deal found 12/7

$1,217

Sun 3/83:35 pmORD - USM

1 stop40h 00mCathay Pacific

Wed 3/1811:40 amUSM - ORD

1 stop38h 15mCathay Pacific

Deal found 12/7

$1,396

Wed 1/211:10 pmORD - USM

2 stops29h 35mMultiple Airlines

Wed 1/286:05 pmUSM - ORD

3 stops33h 12mMultiple Airlines

Deal found 12/7

$1,334

Last-minute flights from O'Hare Intl to Ko Samui
Discover last-minute flight deals from O'Hare Intl to Ko Samui. Data last updated December 9, 2025 and is based on user searches.

Tue 12/167:45 pmORD - USM

3 stops35h 40mMultiple Airlines

Sat 1/39:00 amUSM - ORD

3 stops35h 35mMultiple Airlines

Deal found 12/7

$4,225

Tue 12/161:10 pmORD - USM

2 stops32h 30mEtihad Airways

Sat 1/31:25 pmUSM - ORD

2 stops31h 10mEtihad Airways

Deal found 12/7

$4,761

One-way flights from O'Hare Intl to Ko Samui
Search for one-way flight options from O'Hare Intl to Ko Samui. Find affordable one-way fares based on user searches. Data last updated December 9, 2025.

Wed 12/3111:30 pmORD - USM

2 stops43h 15mEVA Air

Deal found 12/9

$832

Wed 12/312:35 pmORD - USM

2 stops27h 40mMultiple Airlines

Deal found 12/7

$882

Mon 12/297:45 pmORD - USM

2 stops57h 30mEmirates

Deal found 12/8

$1,958

Wed 12/312:35 pmORD - USM

1 stop40h 00mCathay Pacific

Deal found 12/9

$3,645

Find flight deals from O'Hare Intl to Ko Samui

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$992 (oojo)
One-way from	$832 (FlightHub)
Popular in	December
Cheapest in	October
Average price	$2,038

Provider with most accurate pricing for Chicago O'Hare Intl-Ko Samui flight deals.

Search Deals

Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Ko Samui flights.

Search Deals

From Chicago O'Hare Intl to Ko Samui

Search Deals

One-way flight from Chicago O'Hare Intl to Ko Samui

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($161 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($57 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights 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

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 1/21

11:30 pm-5:00 pm

2 stops28h 30m

Ko Samui

Wed 1/28

7:15 am-7:35 pm

2 stops25h 20m

$1,068

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 3/8

2:10 pm-7:30 am

2 stops29h 20m

Ko Samui

Wed 3/18

8:30 am-8:35 am

2 stops36h 05m

$1,076

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 2/6

11:30 pm-4:25 pm

2 stops27h 55m

Ko Samui

Sun 2/15

8:30 pm-7:35 pm

2 stops36h 05m

$1,126

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 2/8

11:30 pm-3:35 pm

2 stops27h 05m

Ko Samui

Sun 2/15

8:30 pm-7:35 pm

2 stops36h 05m

$1,126

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 1/23

1:10 pm-7:35 am

2 stops29h 25m

Ko Samui

Fri 1/30

8:50 am-7:35 am

2 stops59h 45m

$1,158

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 3/1

8:20 pm-10:40 am

2 stops25h 20m

Ko Samui

Sat 3/7

4:25 pm-10:05 am

2 stops54h 40m

$1,217

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 1/21

1:10 pm-7:45 am

2 stops29h 35m

Ko Samui

Wed 1/28

6:05 pm-2:17 pm

3 stops33h 12m

$1,334

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 1/21

2:35 pm-7:35 pm

1 stop40h 00m

Ko Samui

Wed 1/28

11:40 am-12:55 pm

1 stop38h 15m

$1,346

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 3/8

3:35 pm-7:35 pm

1 stop40h 00m

Ko Samui

Wed 3/18

11:40 am-1:55 pm

1 stop38h 15m

$1,396

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 12/31

11:30 pm-7:45 am

2 stops43h 15m

$832

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 13 results

Compare providers for flights from O'Hare Intl to Ko Samui

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Ko Samui in December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Ovago	Price Accuracy2 stars	Trust Score*2 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Ko Samui flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago O'Hare Intl Airport-Ko Samui flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Ko Samui flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Ko Samui flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from O'Hare Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Ko Samui

Prices

Delays

What is the cheapest time of day to fly from ORD to USM?

It’s typically best to fly out from Chicago O'Hare Intl Airport to Ko Samui at noon. Doing so could potentially save you 42% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Ko Samui?

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Ko Samui flight should consider departing on Friday evenings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Chicago O'Hare Intl Airport to Ko Samui flights

Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to Ko Samui trip

Airlines

United Airlines

Polaris offers lie-flat seats with noise-reducing headphones and large entertainment screens.

United Polaris Lounge access includes showers and napping areas with daybeds and white noise.

Spirit Airlines

Spirit's Big Front Seats offer 11 inches more legroom and larger tray tables.

Spirit's self-service bag drop saves time; print your boarding pass beforehand to avoid fees.

Our travel experts

Harriet Baskas

Expert on United Airlines

Daniel Scheffler

Expert on Spirit Airlines

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown EVA Air from Chicago O'Hare Intl Airport to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.5

Very good

1,296 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

EVA Air

8.5

Very good

1,296 reviews

EVA Air

8.5

Very good

1,296 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Related info for your journey

What airport do you fly into for flights to Ko Samui from Chicago O'Hare Intl?
Most people fly into Ko Samui (USM) if they book a flight to Ko Samui from Chicago O'Hare Intl. On average, Ko Samui has 0 inbound flights from Chicago O'Hare Intl per day from 1 airline. Ko Samui is conveniently located just 2.1 mi from Ko Samui’s city center.
How long is the flight from Chicago O'Hare Intl Airport to Ko Samui?
For as low as $1,068, EVA Air can have you in Ko Samui from Chicago O'Hare Intl Airport in 28h 30m. The distance between Chicago O'Hare Intl Airport and Ko Samui is about 8835 mi.
What is the cheapest airline to fly from Chicago O'Hare Intl Airport to Ko Samui round-trip?
EVA Air, at $1,103, was found to be the cheapest airline from Chicago O'Hare Intl Airport to Ko Samui.. Users have found that EVA Air is 27% cheaper than the other options available to this destination.
Can I find deals for flights from O'Hare Intl to Ko Samui that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Ko Samui.
Can I find deals for business class flights from O'Hare Intl to Ko Samui?
Yes. Cheapflights offers flight deals from O'Hare Intl to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Ko Tao

Ko Pha Ngan

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Top airline flying from O'Hare Intl to Ko Samui

Airline	Cheapest	Average	Flexibility	On-time
EVA Air	Cheapest$1,103	Average$1,218	FlexibilityNo cancel fee	On-time74%

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$832+ Cheap flights from O'Hare Intl (ORD) to Ko Samui (USM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/31. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from O'Hare Intl to Ko Samui with Cheapflights

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Cheap flight deals from O'Hare Intl to Ko Samui

Cheapest flights from O'Hare Intl to Ko SamuiExplore the most affordable flight options available from O'Hare Intl to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

Explore the most affordable flight options available from O'Hare Intl to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

Find flight deals from O'Hare Intl to Ko Samui

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights 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.

Compare providers for flights from O'Hare Intl to Ko Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Ko Samui in December.

Best time to book a flight from O'Hare Intl to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from O'Hare Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Ko Samui

What is the cheapest time of day to fly from ORD to USM?

What is the cheapest day to fly from Chicago O'Hare Intl Airport 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?

The best insider tips for Chicago O'Hare Intl Airport to Ko Samui flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to Ko Samui trip

Airlines

United Airlines

Spirit Airlines

Our travel experts

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown EVA Air from Chicago O'Hare Intl Airport to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Ko Samui from Chicago O'Hare Intl?

How long is the flight from Chicago O'Hare Intl Airport to Ko Samui?

What is the cheapest airline to fly from Chicago O'Hare Intl Airport to Ko Samui round-trip?

Can I find deals for flights from O'Hare Intl to Ko Samui that include hotel bookings?

How can I find direct flights from O'Hare Intl to Ko Samui?

Can I find deals for business class flights from O'Hare Intl to Ko Samui?

Traveling to a place near Ko Samui?

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Alternative routes for O'Hare Intl to Ko Samui

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Top airline flying from O'Hare Intl to Ko Samui

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Cheapest flights from O'Hare Intl to Ko Samui
Explore the most affordable flight options available from O'Hare Intl to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.