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Ko Samui

$639+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — USM
Jun 26 — Jul 31
Fri 6/26
Fri 7/3
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 May 27, 2026.

This SmartFares deal was found by Cheapflights users on 5/23. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:20 pm
ORD
-
USM
2 stops25h 20m
Multiple Airlines
Mon 11/239:10 pm
USM
-
ORD
2 stops30h 50m
Multiple Airlines
Deal found 5/23$1,074
This Justfly.com deal was found by Cheapflights users on 5/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:30 pm
ORD
-
USM
2 stops26h 25m
EVA Air
Tue 12/87:00 am
USM
-
ORD
2 stops25h 35m
EVA Air
Deal found 5/27$1,223
This EVA Air deal was found by Cheapflights users on 5/26. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1611:30 pm
ORD
-
USM
2 stops43h 00m
EVA Air
Fri 11/209:20 am
USM
-
ORD
2 stops23h 15m
EVA Air
Deal found 5/26$1,326
This FlightHub deal was found by Cheapflights users on 5/24. 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.
Sun 7/512:30 am
ORD
-
USM
2 stops33h 05m
EVA Air
Wed 7/156:00 am
USM
-
ORD
2 stops27h 10m
EVA Air
Deal found 5/24$1,458
This Trip.com deal was found by Cheapflights users on 5/24. 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.
Wed 7/88:25 pm
ORD
-
USM
2 stops47h 20m
Multiple Airlines
Wed 7/158:30 am
USM
-
ORD
2 stops36h 05m
Multiple Airlines
Deal found 5/24$1,490
This BusinessClass deal was found by Cheapflights users on 5/26. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:30 am
ORD
-
USM
2 stops26h 40m
Multiple Airlines
Fri 7/178:30 am
USM
-
ORD
2 stops24h 40m
Multiple Airlines
Deal found 5/26$1,591
This SmartFares deal was found by Cheapflights users on 5/27. 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.
Sun 8/912:30 am
ORD
-
USM
2 stops28h 05m
EVA Air
Fri 8/148:45 am
USM
-
ORD
2 stops24h 25m
EVA Air
Deal found 5/27$1,630
This Trip.com deal was found by Cheapflights users on 5/27. 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.
Fri 7/1012:30 am
ORD
-
USM
2 stops25h 15m
Multiple Airlines
Sat 7/1810:05 am
USM
-
ORD
2 stops47h 05m
Multiple Airlines
Deal found 5/27$1,683
This oojo deal was found by Cheapflights users on 5/25. 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 6/218:25 pm
ORD
-
USM
2 stops27h 30m
Multiple Airlines
Sun 6/287:00 pm
USM
-
ORD
2 stops32h 40m
Multiple Airlines
Deal found 5/25$1,692

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 May 27, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,074
(SmartFares)

One-way from

$639
(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 May 27, 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

Mon 11/16

11:30 pm-7:30 am

2 stops43h 00m

Ko Samui

Fri 11/20

9:20 am-7:35 pm

2 stops23h 15m

$1,326

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 7/5

12:30 am-9:35 pm

2 stops33h 05m

Ko Samui

Wed 7/15

6:00 am-9:10 pm

2 stops27h 10m

$1,458

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 11/16

11:30 pm-3:35 pm

2 stops27h 05m

Ko Samui

Mon 11/23

5:05 pm-2:41 pm

3 stops34h 36m

$1,518
Quickest round-trip

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 7/9

12:30 am-3:10 pm

2 stops26h 40m

Ko Samui

Fri 7/17

8:30 am-9:10 pm

2 stops24h 40m

$1,591

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 8/9

12:30 am-4:35 pm

2 stops28h 05m

Ko Samui

Fri 8/14

8:45 am-9:10 pm

2 stops24h 25m

$1,630

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 6/21

8:25 pm-11:55 am

2 stops27h 30m

Ko Samui

Sun 6/28

7:00 pm-3:40 pm

2 stops32h 40m

$1,692

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 7/7

12:30 am-7:00 pm

2 stops30h 30m

Ko Samui

Wed 7/15

7:45 pm-10:05 pm

3 stops38h 20m

$1,784
Cheapest one-way
Quickest one-way

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 6/30

2:00 pm-8:15 am

2 stops30h 15m

$816

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 10/4

9:30 pm-8:35 am

3 stops47h 05m

$828

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 10/4

4:15 pm-7:40 pm

1 stop39h 25m

$865

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/22

Showing 1-10 of 12 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 May.
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 23% 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?

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.

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 $1,326, EVA Air can have you in Ko Samui from Chicago O'Hare Intl Airport in 43h. 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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