$489+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — USM
Sep 20 — Sep 271
Round-trip
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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Last-minute
One-way
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 August 21, 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 August 21, 2026.
This SmartFares deal was found by Cheapflights users on 8/21. 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.
Mon 10/54:15 pm -
1 stop39h 25m
Mon 10/122:35 pm -
2 stops35h 20m
Deal found 8/21![Multiple Airlines logo]()
$847
This SmartFares deal was found by Cheapflights users on 8/17. 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 9/84:00 pm -
1 stop39h 40m
Wed 9/1611:55 am -
1 stop38h 00m
Deal found 8/17![Cathay Pacific logo]()
$851
This Justfly.com deal was found by Cheapflights users on 8/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:00 pm -
1 stop39h 40m
Mon 9/2111:55 am -
1 stop38h 00m
Deal found 8/20![Cathay Pacific logo]()
$876
This SmartFares deal was found by Cheapflights users on 8/21. 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 9/84:00 pm -
2 stops28h 15m
Wed 9/162:35 pm -
2 stops35h 20m
Deal found 8/21![Multiple Airlines logo]()
$882
This oojo deal was found by Cheapflights users on 8/21. 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.
Mon 8/314:00 pm -
2 stops34h 45m
Tue 9/299:15 am -
2 stops40h 40m
Deal found 8/21![Multiple Airlines logo]()
$884
This KAYAK deal was found by Cheapflights users on 8/17. 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 11/242:35 pm -
2 stops28h 10m
Tue 12/88:30 pm -
2 stops29h 25m
Deal found 8/17![Multiple Airlines logo]()
$893
This KAYAK deal was found by Cheapflights users on 8/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:00 pm -
1 stop39h 40m
Mon 9/2111:55 am -
1 stop38h 00m
Deal found 8/20![Cathay Pacific logo]()
$899
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 August 21, 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 August 21, 2026.
This SmartFares deal was found by Cheapflights users on 8/17. 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 8/314:00 pm -
2 stops34h 45m
Tue 9/299:15 am -
2 stops40h 40m
Deal found 8/17![Multiple Airlines logo]()
$966
This Etihad Airways deal was found by Cheapflights users on 8/20. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:00 pm -
2 stops30h 25m
Thu 9/248:00 am -
2 stops36h 35m
Deal found 8/20![Etihad Airways logo]()
$1,110
This EVA Air deal was found by Cheapflights users on 8/20. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:30 am -
2 stops26h 15m
Sun 9/209:00 pm -
2 stops35h 45m
Deal found 8/20![EVA Air logo]()
$1,145
This Etihad Airways deal was found by Cheapflights users on 8/20. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/62:00 pm -
2 stops30h 15m
Wed 9/232:30 pm -
2 stops30h 05m
Deal found 8/20![Etihad Airways logo]()
$1,110
This EVA Air deal was found by Cheapflights users on 8/19. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1312:30 am -
2 stops26h 15m
Fri 9/189:15 am -
2 stops23h 30m
Deal found 8/19![EVA Air logo]()
$1,185
This EVA Air deal was found by Cheapflights users on 8/20. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:30 am -
2 stops26h 15m
Sat 9/199:15 am -
2 stops23h 30m
Deal found 8/20![EVA Air logo]()
$1,185
This EVA Air deal was found by Cheapflights users on 8/20. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:30 am -
2 stops26h 40m
Tue 9/226:00 am -
2 stops26h 45m
Deal found 8/20![EVA Air logo]()
$1,185
This Mytrip deal was found by Cheapflights users on 8/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:15 am -
3 stops32h 55m
Sun 10/1111:05 am -
3 stops34h 25m
Deal found 8/20![Multiple Airlines logo]()
$1,781
This Malaysia Airlines deal was found by Cheapflights users on 8/17. 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 9/86:15 pm -
3 stops32h 30m
Wed 9/163:50 pm -
3 stops27h 30m
Deal found 8/17![Multiple Airlines logo]()
$2,272
This Malaysia Airlines deal was found by Cheapflights users on 8/20. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:35 pm -
3 stops31h 20m
Sat 11/285:05 pm -
3 stops34h 25m
Deal found 8/20![Multiple Airlines logo]()
$2,493
Last-minute flights from O'Hare Intl to Ko SamuiDiscover last-minute flight deals from O'Hare Intl to Ko Samui. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Ko Samui. Data last updated August 21, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 8/21. 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.
Mon 8/314:00 pm -
2 stops34h 45m
Tue 9/299:15 am -
2 stops40h 40m
Deal found 8/21![Multiple Airlines logo]()
$884
This Bravofly deal was found by Cheapflights users on 8/17. 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.
Tue 9/14:00 pm -
1 stop39h 40m
Tue 9/811:55 am -
1 stop38h 25m
Deal found 8/17![Cathay Pacific logo]()
$934
This KAYAK deal was found by Cheapflights users on 8/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:00 pm -
1 stop39h 40m
Mon 9/2111:55 am -
1 stop38h 00m
Deal found 8/20![Cathay Pacific logo]()
$899
This Justfly.com deal was found by Cheapflights users on 8/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:00 pm -
1 stop39h 40m
Mon 9/2111:55 am -
1 stop38h 00m
Deal found 8/20![Cathay Pacific logo]()
$876
This KAYAK deal was found by Cheapflights users on 8/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:00 pm -
1 stop39h 40m
Wed 9/2311:55 am -
1 stop38h 00m
Deal found 8/20![Cathay Pacific logo]()
$942
This SmartFares deal was found by Cheapflights users on 8/17. 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 9/84:00 pm -
1 stop39h 40m
Wed 9/1611:55 am -
1 stop38h 00m
Deal found 8/17![Cathay Pacific logo]()
$851
This SmartFares deal was found by Cheapflights users on 8/21. 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 9/84:00 pm -
2 stops28h 15m
Wed 9/162:35 pm -
2 stops35h 20m
Deal found 8/21![Multiple Airlines logo]()
$882
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 August 21, 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 August 21, 2026.
This SmartFares deal was found by Cheapflights users on 8/16. 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 9/154:00 pm -
1 stop39h 40m
Deal found 8/16![Cathay Pacific logo]()
$489
This FlightHub deal was found by Cheapflights users on 8/16. 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 9/144:00 pm -
1 stop39h 40m
Deal found 8/16![Cathay Pacific logo]()
$495
This Cathay Pacific deal was found by Cheapflights users on 8/16. 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.
Sun 9/134:00 pm -
1 stop39h 40m
Deal found 8/16![Cathay Pacific logo]()
$506
This Expedia deal was found by Cheapflights users on 8/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:35 pm -
2 stops29h 15m
Deal found 8/16![Multiple Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Thu 9/178:25 pm -
2 stops36h 00m
Deal found 8/16![Multiple Airlines logo]()
$547
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Wed 10/282:10 pm -
2 stops33h 45m
Deal found 8/16![Etihad Airways logo]()
$563
This Flightnetwork deal was found by Cheapflights users on 8/17. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:00 pm -
2 stops29h 10m
Deal found 8/17![Etihad Airways logo]()
$564
This Cathay Pacific deal was found by Cheapflights users on 8/16. 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.
Sat 9/124:00 pm -
1 stop39h 40m
Deal found 8/16![Cathay Pacific logo]()
$566
This FlightHub deal was found by Cheapflights users on 8/16. 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 10/262:10 pm -
2 stops32h 30m
Deal found 8/16![Etihad Airways logo]()
$570
This Etihad Airways deal was found by Cheapflights users on 8/16. 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.
Sun 10/252:10 pm -
2 stops32h 30m
Deal found 8/16![Etihad Airways logo]()
$574
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 August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $851 (SmartFares) |
One-way from | $489 (SmartFares) |
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 7,457,451 searches. Data last updated August 21, 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
Cheapest round-trip
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Mon 8/31
4:00 pm-2:45 pm
2 stops34h 45m
Ko Samui
Tue 9/29
9:15 am-1:55 pm
2 stops40h 40m
$966
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Wed 9/9
2:00 pm-8:25 am
2 stops30h 25m
Ko Samui
Thu 9/24
8:00 am-8:35 am
2 stops36h 35m
$1,110
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Sun 9/6
2:00 pm-8:15 am
2 stops30h 15m
Ko Samui
Wed 9/23
2:30 pm-8:35 am
2 stops30h 05m
$1,110
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Sun 9/6
12:30 am-2:45 pm
2 stops26h 15m
Ko Samui
Sun 9/20
9:00 pm-8:45 pm
2 stops35h 45m
$1,145
Quickest round-trip
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Sun 9/13
12:30 am-2:45 pm
2 stops26h 15m
Ko Samui
Fri 9/18
9:15 am-8:45 pm
2 stops23h 30m
$1,185
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Tue 9/8
12:30 am-2:45 pm
2 stops26h 15m
Ko Samui
Sat 9/19
9:15 am-8:45 pm
2 stops23h 30m
$1,185
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Fri 9/4
12:30 am-3:10 pm
2 stops26h 40m
Ko Samui
Tue 9/22
6:00 am-8:45 pm
2 stops26h 45m
$1,185
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Sun 10/4
10:15 am-7:10 am
3 stops32h 55m
Ko Samui
Sun 10/11
11:05 am-9:30 am
3 stops34h 25m
$1,781
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Tue 9/8
6:15 pm-2:45 pm
3 stops32h 30m
Ko Samui
Wed 9/16
3:50 pm-7:20 am
3 stops27h 30m
$2,272
ChicagoKo Samui
ORD Chicago O'Hare Intl - USM Ko Samui
ORDUSM
Chicago O'Hare Intl
Sun 11/15
6:35 pm-2:55 pm
3 stops31h 20m
Ko Samui
Sat 11/28
5:05 pm-2:30 pm
3 stops34h 25m
$2,493
Showing 1-10 of 19 resultsSorted 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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 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
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 142 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 early afternoon 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 Thursday 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 21% 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
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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