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Ko Samui

$551+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — USM
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
1 adult, Economy
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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 July 26, 2026.

This CheapTickets deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:00 pm
ORD
-
USM
2 stops38h 00m
Multiple Airlines
Mon 9/149:15 am
USM
-
ORD
2 stops41h 05m
Multiple Airlines
Deal found 7/24$989
This Trip.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:20 pm
ORD
-
USM
2 stops34h 30m
Multiple Airlines
Wed 11/183:35 pm
USM
-
ORD
2 stops53h 20m
Multiple Airlines
Deal found 7/22$1,019
This Trip.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:00 pm
ORD
-
USM
2 stops29h 10m
Multiple Airlines
Tue 9/156:00 am
USM
-
ORD
2 stops38h 35m
Multiple Airlines
Deal found 7/24$1,020
This Trip.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:00 pm
ORD
-
USM
2 stops40h 25m
Multiple Airlines
Wed 9/168:00 am
USM
-
ORD
2 stops41h 55m
Multiple Airlines
Deal found 7/26$1,024
This Bravofly deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:30 am
ORD
-
USM
2 stops27h 15m
EVA Air
Mon 9/149:15 am
USM
-
ORD
2 stops23h 30m
EVA Air
Deal found 7/24$1,037

Find flight deals from O'Hare Intl to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$989
(CheapTickets)

One-way from

$551
(Goibibo)
Provider with most accurate pricing for Chicago O'Hare Intl-Ko Samui flight deals.
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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Ko Samui flights.
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From Chicago O'Hare Intl to Ko Samui
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One-way flight from Chicago O'Hare Intl to Ko Samui
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Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 2026.
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

Tue 9/8

4:00 pm-7:40 pm

1 stop39h 40m

Ko Samui

Tue 9/15

11:55 am-1:55 pm

1 stop38h 00m

$1,495

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 9/9

4:00 pm-7:40 pm

1 stop39h 40m

Ko Samui

Wed 9/16

11:55 am-1:55 pm

1 stop38h 00m

$1,508

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 9/9

8:35 pm-5:05 pm

2 stops56h 30m

Ko Samui

Wed 9/16

7:10 pm-3:45 pm

2 stops32h 35m

$1,697

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 9/8

8:35 pm-5:05 pm

2 stops56h 30m

Ko Samui

Tue 9/15

5:35 pm-3:45 pm

2 stops34h 10m

$1,697

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 9/6

7:20 pm-5:05 pm

3 stops33h 45m

Ko Samui

Sun 9/13

3:50 pm-3:05 pm

3 stops35h 15m

$2,300

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 10/1

7:20 pm-4:35 pm

3 stops33h 15m

Ko Samui

Sat 10/31

5:05 pm-3:30 pm

3 stops34h 25m

$2,300

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 9/7

7:20 pm-5:05 pm

3 stops33h 45m

Ko Samui

Mon 9/14

3:50 pm-3:05 pm

3 stops35h 15m

$2,373
Quickest round-trip

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 9/22

5:55 pm-2:45 pm

3 stops32h 50m

Ko Samui

Mon 9/28

11:45 am-7:20 am

3 stops31h 35m

$2,412
Cheapest one-way

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 9/7

2:10 pm-2:45 pm

2 stops36h 35m

$551

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 9/9

2:10 pm-5:45 pm

2 stops39h 35m

$552

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-Ko Samui flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

How often are flights from Chicago to Ko Samui delayed?

About 22% of weekly flights between Chicago and Ko Samui have experienced delays in the past year, with the average delay time being 139 minutes.

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

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

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

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

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

Over the last year, JetBlue have had the lowest number of delays on this route, with just 20% of flights being delayed.

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
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

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?

    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 0 airlines. 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 $1,495, Cathay Pacific can have you in Ko Samui from Chicago O'Hare Intl Airport in 39h 40m. The distance between Chicago O'Hare Intl Airport and Ko Samui is about 8835 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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