$488+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — USM
Mar 27 — Apr 31
1 adult, Economy
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Find cheap flights from O'Hare Intl to Ko Samui with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from O'Hare Intl to Ko Samui
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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 February 25, 2026.
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 February 25, 2026.
This FlightHub deal was found by Cheapflights users on 2/24. 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 9/1312:30 am
ORD
- USM
2 stops26h 15m
EVA Air
Thu 10/18:45 am
USM
- ORD
2 stops24h 00m
EVA Air
Deal found 2/24![EVA Air logo]()
$992
This FlightHub deal was found by Cheapflights users on 2/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:30 am
ORD
- USM
2 stops26h 15m
EVA Air
Wed 9/309:15 am
USM
- ORD
2 stops23h 30m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,030
This KAYAK deal was found by Cheapflights users on 2/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:30 am
ORD
- USM
2 stops26h 15m
EVA Air
Thu 10/18:45 am
USM
- ORD
2 stops24h 00m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,054
This EVA Air deal was found by Cheapflights users on 2/24. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:30 am
ORD
- USM
2 stops27h 10m
EVA Air
Sun 11/19:10 pm
USM
- ORD
2 stops35h 25m
EVA Air
Deal found 2/24![EVA Air logo]()
$1,055
This FlightHub deal was found by Cheapflights users on 2/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:30 am
ORD
- USM
2 stops25h 15m
EVA Air
Fri 10/29:15 am
USM
- ORD
2 stops23h 30m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,068
This KAYAK deal was found by Cheapflights users on 2/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:30 am
ORD
- USM
2 stops25h 15m
EVA Air
Tue 9/299:15 am
USM
- ORD
2 stops23h 30m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,094
This Gotogate deal was found by Cheapflights users on 2/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:30 pm
ORD
- USM
2 stops43h 35m
EVA Air
Mon 3/96:40 pm
USM
- ORD
2 stops37h 55m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,113
This KAYAK deal was found by Cheapflights users on 2/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:30 am
ORD
- USM
2 stops25h 15m
EVA Air
Fri 10/29:15 am
USM
- ORD
2 stops23h 30m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,134
This oojo deal was found by Cheapflights users on 2/21. 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 3/812:50 pm
ORD
- USM
2 stops30h 55m
Multiple Airlines
Wed 3/181:25 pm
USM
- ORD
2 stops33h 40m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$1,152
This Gurufare deal was found by Cheapflights users on 2/23. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:25 am
ORD
- USM
2 stops41h 40m
Multiple Airlines
Tue 3/34:25 pm
USM
- ORD
2 stops39h 16m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$1,194
This FlightHub deal was found by Cheapflights users on 2/23. 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.
Mon 3/912:30 am
ORD
- USM
2 stops29h 20m
EVA Air
Tue 4/79:00 pm
USM
- ORD
2 stops36h 00m
EVA Air
Deal found 2/23![EVA Air logo]()
$1,202
Best flights from O'Hare Intl to Ko SamuiDiscover 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 February 25, 2026.
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 February 25, 2026.
This FlightHub deal was found by Cheapflights users on 2/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:30 am
ORD
- USM
2 stops28h 30m
EVA Air
Tue 4/79:00 pm
USM
- ORD
2 stops36h 00m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,202
This Trip.com deal was found by Cheapflights users on 2/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:10 pm
ORD
- USM
2 stops29h 00m
Multiple Airlines
Thu 4/164:25 pm
USM
- ORD
2 stops53h 15m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$1,262
This KAYAK deal was found by Cheapflights users on 2/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/243:35 pm
ORD
- USM
1 stop40h 00m
Cathay Pacific
Tue 3/3111:55 am
USM
- ORD
1 stop38h 00m
Cathay Pacific
Deal found 2/22![Cathay Pacific logo]()
$1,872
This KAYAK deal was found by Cheapflights users on 2/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/83:35 pm
ORD
- USM
1 stop40h 00m
Cathay Pacific
Wed 3/1811:40 am
USM
- ORD
1 stop38h 15m
Cathay Pacific
Deal found 2/21![Cathay Pacific logo]()
$1,872
This Malaysia Airlines deal was found by Cheapflights users on 2/23. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:40 pm
ORD
- USM
3 stops29h 25m
Multiple Airlines
Tue 4/73:50 pm
USM
- ORD
3 stops27h 30m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$3,002
This Cathay Pacific deal was found by Cheapflights users on 2/24. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:35 pm
ORD
- USM
1 stop40h 00m
Cathay Pacific
Wed 4/811:55 am
USM
- ORD
1 stop38h 00m
Cathay Pacific
Deal found 2/24![Cathay Pacific logo]()
$3,196
Last-minute flights from O'Hare Intl to Ko SamuiDiscover last-minute flight deals from O'Hare Intl to Ko Samui. Data last updated February 25, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Ko Samui. Data last updated February 25, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 2/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:30 pm
ORD
- USM
2 stops43h 35m
EVA Air
Mon 3/96:40 pm
USM
- ORD
2 stops37h 55m
EVA Air
Deal found 2/21![EVA Air logo]()
$1,113
This Gurufare deal was found by Cheapflights users on 2/23. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:25 am
ORD
- USM
2 stops41h 40m
Multiple Airlines
Tue 3/34:25 pm
USM
- ORD
2 stops39h 16m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$1,194
This oojo deal was found by Cheapflights users on 2/21. 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 3/812:50 pm
ORD
- USM
2 stops30h 55m
Multiple Airlines
Wed 3/181:25 pm
USM
- ORD
2 stops33h 40m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$1,152
This FlightHub deal was found by Cheapflights users on 2/23. 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.
Sun 3/89:20 pm
ORD
- USM
2 stops32h 55m
Turkish Airlines
Wed 3/181:25 pm
USM
- ORD
2 stops33h 40m
Turkish Airlines
Deal found 2/23![Turkish Airlines logo]()
$1,236
This FlightHub deal was found by Cheapflights users on 2/23. 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.
Mon 3/912:30 am
ORD
- USM
2 stops29h 20m
EVA Air
Tue 4/79:00 pm
USM
- ORD
2 stops36h 00m
EVA Air
Deal found 2/23![EVA Air logo]()
$1,202
This Mytrip deal was found by Cheapflights users on 2/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1012:30 am
ORD
- USM
2 stops29h 20m
Multiple Airlines
Wed 3/187:45 pm
USM
- ORD
3 stops30h 10m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$1,561
This Gotogate deal was found by Cheapflights users on 2/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/122:10 pm
ORD
- USM
2 stops29h 35m
Etihad Airways
Tue 3/173:50 pm
USM
- ORD
2 stops28h 45m
Etihad Airways
Deal found 2/23![Etihad Airways logo]()
$1,440
This FlightHub deal was found by Cheapflights users on 2/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2312:30 am
ORD
- USM
2 stops28h 30m
EVA Air
Tue 3/317:45 pm
USM
- ORD
2 stops37h 15m
EVA Air
Deal found 2/22![EVA Air logo]()
$1,240
This FlightHub deal was found by Cheapflights users on 2/23. 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.
Tue 3/2412:30 am
ORD
- USM
2 stops29h 20m
EVA Air
Wed 4/88:45 am
USM
- ORD
2 stops24h 15m
EVA Air
Deal found 2/23![EVA Air logo]()
$1,513
One-way flights from O'Hare Intl to Ko SamuiSearch for one-way flight options from O'Hare Intl to Ko Samui. Find affordable one-way fares based on user searches. Data last updated February 25, 2026.
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 February 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:01 pm
ORD
- USM
3 stops49h 49m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$488
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 February 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,152 (oojo) |
One-way from | $488 (Kiwi.com) |
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 February 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
O'Hare Intl
Fly to
Ko Samui
Route
Depart
Return
Price
ChicagoKo Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Mon 3/9
12:30 am-5:00 pm
2 stops28h 30m
Ko Samui
Tue 4/7
9:00 pm-9:00 pm
2 stops36h 00m
$1,202
ChicagoKo Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Thu 4/9
8:10 pm-1:10 pm
2 stops29h 00m
Ko Samui
Thu 4/16
4:25 pm-9:40 am
2 stops53h 15m
$1,262
ChicagoKo Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Tue 3/24
3:35 pm-7:35 pm
1 stop40h 00m
Ko Samui
Tue 3/31
11:55 am-1:55 pm
1 stop38h 00m
$1,872
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
$1,872
ChicagoKo Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Tue 3/10
7:40 pm-1:05 pm
3 stops29h 25m
Ko Samui
Tue 4/7
3:50 pm-7:20 am
3 stops27h 30m
$3,002
ChicagoKo Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Wed 3/25
3:35 pm-7:35 pm
1 stop40h 00m
Ko Samui
Wed 4/8
11:55 am-1:55 pm
1 stop38h 00m
$3,196
ChicagoKo Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Tue 3/17
6:01 pm-7:50 am
3 stops49h 49m
$488
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- 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.
ORD-USM
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?
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 February 25, 2026.
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?
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.
How often are flights from Chicago to Ko Samui delayed?
About 19% of weekly flights between Chicago and Ko Samui have experienced delays in the past year, with the average delay time being 143 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 in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Sunday 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, American Airlines have had the lowest number of delays on this route, with just 17% 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
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 February 25, 2026.
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.
Entertainment
8.0
Food
8.1
Boarding
8.4
Comfort
8.3
Overall
8.4
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJolene,Jan 2026
SGN - TPE
Entertainment
8.0
Food
8.1
Boarding
8.4
Comfort
8.3
Overall
8.4
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJolene,Jan 2026
SGN - TPE
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.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan
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O'Hare Intl and Ko Samui flights
Browse other O'Hare Intl and Ko Samui flight options. Last updated on February 25, 2026.
Other flights from O'Hare Intl
Browse through other flights departing from O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on February 25, 2026.
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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 February 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,098 | Average$1,176 | FlexibilityNo cancel fee | On-time74% |