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Ko Samui

$667+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — USM
May 24 — May 311
Sat 5/24
Sat 5/31
1 adult, Economy
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Cheap 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 19, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$1,153
(FlightHub)

One-way from

$667
(Gotogate)
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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Find 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 19, 2025.

This FlightHub deal was found by Cheapflights users on 5/18. 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.
Fri 9/1912:30 amORD - USM
2 stops26h 40mEVA Air
Mon 9/298:00 amUSM - ORD
2 stops24h 45mEVA Air
Deal found 5/18$1,153
This FlightHub deal was found by Cheapflights users on 5/18. 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 9/2011:45 pmORD - USM
2 stops32h 40mTurkish Airlines
Mon 9/293:20 pmUSM - ORD
2 stops30h 20mTurkish Airlines
Deal found 5/18$1,167
This Gurufare deal was found by Cheapflights users on 5/18. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/204:00 pmORD - USM
1 stop38h 35mCathay Pacific
Mon 9/2910:55 amUSM - ORD
1 stop39h 30mCathay Pacific
Deal found 5/18$1,493
This CheapTickets deal was found by Cheapflights users on 5/18. 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.
Tue 7/112:30 amORD - USM
2 stops28h 05mMultiple Airlines
Wed 7/98:20 amUSM - ORD
2 stops24h 50mMultiple Airlines
Deal found 5/18$1,609
This Gurufare deal was found by Cheapflights users on 5/18. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:00 amORD - USM
3 stops48h 15mSingapore Airlines
Mon 9/294:25 pmUSM - ORD
2 stops39h 23mSingapore Airlines
Deal found 5/18$1,902
This Etihad Airways deal was found by Cheapflights users on 5/18. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/191:55 pmORD - USM
2 stops32h 35mEtihad Airways
Mon 7/75:55 pmUSM - ORD
2 stops50h 50mEtihad Airways
Deal found 5/18$1,923
This StudentUniverse deal was found by Cheapflights users on 5/18. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/186:15 amORD - USM
3 stops38h 00mQatar Airways
Wed 7/95:50 pmUSM - ORD
2 stops33h 15mQatar Airways
Deal found 5/18$2,518
This Emirates deal was found by Cheapflights users on 5/18. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/18:35 pmORD - USM
2 stops36h 35mEmirates
Tue 7/88:00 amUSM - ORD
2 stops43h 45mEmirates
Deal found 5/18$2,811
This SWISS deal was found by Cheapflights users on 5/18. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/27:05 pmORD - USM
2 stops29h 40mSWISS
Wed 7/99:15 amUSM - ORD
2 stops39h 35mSWISS
Deal found 5/18$3,822
This Austrian Airlines deal was found by Cheapflights users on 5/19. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/34:20 pmORD - USM
2 stops38h 10mAustrian Airlines
Thu 7/107:30 pmUSM - ORD
2 stops29h 50mAustrian Airlines
Deal found 5/19$3,838
This Booking.com deal was found by Cheapflights users on 5/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/21:30 amORD - USM
2 stops28h 15mJapan Airlines
Thu 7/107:30 pmUSM - ORD
3 stops32h 30mJapan Airlines
Deal found 5/19$4,235

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 19, 2025.
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

O'Hare Intl

Fly to

Ko Samui

Route

Depart

Return

Price

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 7/2

12:30 am-4:35 pm

2 stops28h 05m

Ko Samui

Thu 7/10

8:00 am-9:10 pm

2 stops25h 10m

$1,373

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 7/1

12:30 am-4:35 pm

2 stops28h 05m

Ko Samui

Wed 7/9

8:20 am-9:10 pm

2 stops24h 50m

$1,609

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 7/3

7:50 pm-1:10 pm

2 stops29h 20m

Ko Samui

Thu 7/10

4:25 pm-9:40 am

2 stops53h 15m

$1,700

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 6/19

1:55 pm-10:30 am

2 stops32h 35m

Ko Samui

Mon 7/7

5:55 pm-8:45 am

2 stops50h 50m

$1,923

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 6/17

4:00 pm-6:35 pm

1 stop38h 35m

Ko Samui

Thu 7/10

10:55 am-2:25 pm

1 stop39h 30m

$1,967

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 6/18

6:15 am-8:15 am

3 stops38h 00m

Ko Samui

Wed 7/9

5:50 pm-3:05 pm

2 stops33h 15m

$2,518

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 7/1

8:35 pm-9:10 pm

2 stops36h 35m

Ko Samui

Tue 7/8

8:00 am-3:45 pm

2 stops43h 45m

$2,811

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 7/2

7:05 pm-12:45 pm

2 stops29h 40m

Ko Samui

Wed 7/9

9:15 am-12:50 pm

2 stops39h 35m

$3,822

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 7/3

4:20 pm-6:30 pm

2 stops38h 10m

Ko Samui

Thu 7/10

7:30 pm-1:20 pm

2 stops29h 50m

$3,838

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 7/2

1:30 am-5:45 pm

2 stops28h 15m

Ko Samui

Thu 7/10

7:30 pm-4:00 pm

3 stops32h 30m

$4,235

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

Showing 1-10 of 17 results
1
2
  • 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.

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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.

Read more about United Airlinesby Harriet Baskas
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.

Read more about Spirit Airlinesby Daniel Scheffler
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

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
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more

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

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

Find hourly flight availability from O'Hare Intl to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 19, 2025.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Ko Samui at noon. Doing so could potentially save you 43% 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?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Ko Samui. Price data was last updated on March 30, 2025.

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.

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

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.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated May 19, 2025.
EVA Air
8.4
Very good
1,193 reviews

Overall

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,193 reviews
EVA Air
8.4
Very good
1,193 reviews

Overall

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,475 reviews
EVA Air
8.4
Very good
1,193 reviews

Overall

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Singapore Airlines
8.1
Very good
1,294 reviews
EVA Air
8.4
Very good
1,193 reviews

Overall

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Emirates
8.0
Very good
3,235 reviews
EVA Air
8.4
Very good
1,193 reviews

Overall

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Austrian Airlines
7.6
Good
792 reviews
EVA Air
8.4
Very good
1,193 reviews

Overall

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 1 airline. Ko Samui is conveniently located just 2.1 mi from Ko Samui’s city center.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Ko Samui round-trip?

    EVA Air, at $1,153, was found to be the cheapest airline from Chicago O'Hare Intl Airport to Ko Samui.Alternate airlines to your destination round-trip include Turkish Airlines and Cathay Pacific.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Ko Samui one-way?

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $787. EVA Air flights start at $1,131 while deals on Cathay Pacific start at $1,237 one-way.

  • 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from O'Hare Intl to Ko Samui

Discover the top airline that operate flights from O'Hare Intl to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,147Average$1,258FlexibilityNo cancel feeOn-time74%

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