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Ko Samui

$762+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — USM
Jul 25 — Aug 11
Sat 7/25
Sat 8/1
1 adult, Economy
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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 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 June 25, 2026.

This oojo deal was found by Cheapflights users on 6/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:00 pm
ORD
-
USM
2 stops29h 10m
Multiple Airlines
Sat 10/245:35 pm
USM
-
ORD
2 stops27h 20m
Multiple Airlines
Deal found 6/21$1,070
This oojo deal was found by Cheapflights users on 6/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:10 pm
ORD
-
USM
2 stops32h 30m
Multiple Airlines
Wed 11/185:05 pm
USM
-
ORD
2 stops27h 50m
Multiple Airlines
Deal found 6/20$1,071
This SmartFares deal was found by Cheapflights users on 6/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:10 pm
ORD
-
USM
2 stops46h 00m
Multiple Airlines
Mon 9/73:25 pm
USM
-
ORD
2 stops29h 10m
Multiple Airlines
Deal found 6/21$1,074
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:30 pm
ORD
-
USM
2 stops28h 30m
EVA Air
Tue 12/87:00 am
USM
-
ORD
2 stops25h 35m
EVA Air
Deal found 6/24$1,217
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:30 am
ORD
-
USM
2 stops26h 15m
EVA Air
Sat 10/248:50 pm
USM
-
ORD
2 stops35h 45m
EVA Air
Deal found 6/24$1,293
This EVA Air deal was found by Cheapflights users on 6/22. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:30 am
ORD
-
USM
2 stops27h 15m
EVA Air
Thu 9/246:00 am
USM
-
ORD
2 stops26h 45m
EVA Air
Deal found 6/22$1,320
This Mytrip deal was found by Cheapflights users on 6/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:15 am
ORD
-
USM
2 stops36h 50m
Multiple Airlines
Sat 9/263:25 pm
USM
-
ORD
3 stops35h 18m
Multiple Airlines
Deal found 6/23$1,413
This FlightHub deal was found by Cheapflights users on 6/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:30 am
ORD
-
USM
2 stops30h 30m
EVA Air
Sun 8/307:10 pm
USM
-
ORD
2 stops38h 00m
EVA Air
Deal found 6/23$1,475

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 June 25, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,070
(oojo)

One-way from

$762
(FlightHub)
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 June 25, 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

Sat 9/19

12:30 am-3:45 pm

2 stops27h 15m

Ko Samui

Thu 9/24

6:00 am-8:45 pm

2 stops26h 45m

$1,320

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 9/1

6:54 pm-1:45 pm

3 stops30h 51m

Ko Samui

Mon 9/7

8:10 am-8:45 pm

2 stops24h 35m

$1,400

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 9/1

4:00 pm-7:40 pm

1 stop39h 40m

Ko Samui

Mon 9/7

11:55 am-2:20 pm

1 stop38h 25m

$1,586
Quickest round-trip

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 8/4

12:30 am-1:45 pm

2 stops25h 15m

Ko Samui

Wed 8/12

8:30 am-9:10 pm

2 stops24h 40m

$1,588

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 8/5

12:30 am-5:45 pm

2 stops29h 15m

Ko Samui

Thu 8/13

8:10 am-9:10 pm

2 stops25h 00m

$1,588

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 8/9

4:00 pm-10:35 am

2 stops30h 35m

Ko Samui

Sun 8/30

11:55 am-2:20 pm

1 stop38h 25m

$2,164
Cheapest one-way

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 8/13

12:30 am-7:45 am

2 stops43h 15m

$762

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 8/14

9:13 pm-4:30 pm

3 stops55h 17m

$835
Quickest one-way

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 8/14

4:00 pm-7:40 pm

1 stop39h 40m

$1,350

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/20

Sorted by cheapest first

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 June.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago O'Hare Intl Airport-Ko Samui flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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 20% of weekly flights between Chicago and Ko Samui have experienced delays in the past year, with the average delay time being 129 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?

Thursday 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.

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

Over the last year, Delta have had the lowest number of delays on this route, with just 15% 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 $1,320, EVA Air can have you in Ko Samui from Chicago O'Hare Intl Airport in 27h 15m. The distance between Chicago O'Hare Intl Airport and Ko Samui is about 8835 mi.

  • 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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