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Cheap flights from Ko Samui to Chicago O'Hare Intl Airport from ฿45,529

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
USM — ORD
21 May — 28 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ko Samui to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ko Samui to O'Hare Intl
Explore the most affordable flight options available from Ko Samui to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 April 2026.

Thu 17/906:00
USM
-
ORD
2 stops26h 45m
EVA Air
Sun 20/900:30
ORD
-
USM
2 stops28h 00m
EVA Air
Deal found 21/4฿45,529
Thu 21/519:00
USM
-
ORD
2 stops32h 45m
Emirates
Thu 11/620:35
ORD
-
USM
2 stops33h 25m
Emirates
Deal found 17/4฿49,189
Mon 18/514:30
USM
-
ORD
2 stops38h 20m
Qatar Airways
Tue 9/619:20
ORD
-
USM
2 stops34h 40m
Qatar Airways
Deal found 17/4฿49,414
Mon 18/508:00
USM
-
ORD
2 stops43h 45m
Emirates
Wed 10/620:35
ORD
-
USM
2 stops32h 20m
Emirates
Deal found 17/4฿49,510
Fri 22/519:00
USM
-
ORD
2 stops32h 45m
Emirates
Wed 10/620:35
ORD
-
USM
2 stops32h 20m
Emirates
Deal found 17/4฿49,767
Mon 18/508:00
USM
-
ORD
2 stops43h 45m
Emirates
Fri 12/620:35
ORD
-
USM
2 stops33h 25m
Emirates
Deal found 17/4฿50,120
Wed 20/517:55
USM
-
ORD
2 stops34h 55m
Qatar Airways
Fri 12/619:20
ORD
-
USM
2 stops29h 25m
Qatar Airways
Deal found 17/4฿50,217
Tue 19/514:30
USM
-
ORD
2 stops37h 15m
Emirates
Wed 10/620:35
ORD
-
USM
2 stops32h 20m
Emirates
Deal found 17/4฿50,249

Find flight deals from Ko Samui to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ko Samui (USM) to O'Hare Intl (ORD). 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 21 April 2026.

Round-trip from

฿45,625
EVA Air
  • EVA Air
  • 17/9-20/9
  • 4 total stops
  • 51h 35m total
  • Ko Samui to Chicago
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ko Samui to O'Hare Intl 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 17,341 searches. Data last updated 21 April 2026.
Use the filters below to find and compare flights from Ko Samui to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 17/9

06:00-20:45

2 stops26h 45m

Chicago O'Hare Intl

Sun 20/9

00:30-16:30

2 stops28h 00m

฿45,529

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Sun 24/5

19:00-15:45

2 stops32h 45m

Chicago O'Hare Intl

Wed 10/6

20:35-16:55

2 stops32h 20m

฿49,189

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 21/5

19:00-15:45

2 stops32h 45m

Chicago O'Hare Intl

Sat 6/6

20:35-18:00

2 stops33h 25m

฿49,189

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Wed 20/5

14:30-16:50

2 stops38h 20m

Chicago O'Hare Intl

Mon 8/6

19:20-18:00

2 stops34h 40m

฿49,414

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 21/5

19:00-15:45

2 stops32h 45m

Chicago O'Hare Intl

Fri 12/6

20:35-18:00

2 stops33h 25m

฿49,767

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Mon 18/5

08:00-15:45

2 stops43h 45m

Chicago O'Hare Intl

Fri 12/6

20:35-18:00

2 stops33h 25m

฿50,120

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Wed 20/5

17:55-15:45

2 stops33h 50m

Chicago O'Hare Intl

Wed 10/6

20:35-18:00

2 stops33h 25m

฿50,249

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Sorted by cheapest first

Best time to book a flight from Ko Samui to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Ko Samui with our price prediction graph.
Estimated return 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.

Related info for your journey

Find useful and relevant information for your journey from Ko Samui to O'Hare Intl. 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 from for flights from Ko Samui to Chicago O'Hare Intl?

    Most people fly from Ko Samui (USM) if they book a flight from Ko Samui to Chicago O'Hare Intl. On average, Ko Samui has 0 outbound flights to Chicago O'Hare Intl per day from 0 airlines. Ko Samui is conveniently located just 3.3 km from Ko Samui’s city centre.

  • How long is the flight from Ko Samui to Chicago O'Hare Intl Airport?

    EVA Air can get you from Ko Samui to Chicago O'Hare Intl Airport in just under 26h 45m. Your travel time can differ by up to . The distance between Ko Samui and Chicago O'Hare Intl Airport is about 14219 km.

  • Can I find deals for flights from Ko Samui to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Ko Samui to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ko Samui to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to O'Hare Intl.

  • Can I find deals for business class flights from Ko Samui to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Ko Samui to O'Hare Intl 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

Travelling 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
Rosemont

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ko Samui to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to O'Hare Intl flights
Chiang Mai to Midway flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ko Samui to O'Hare Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ko Samui to O'Hare Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ko Samui to O'Hare Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ko Samui to O'Hare Intl.

Can Cheapflights find flights from Ko Samui to O'Hare Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ko Samui to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ko Samui to O'Hare Intl become cheaper?

Yes, Cheapflights offers price alerts on Ko Samui to O'Hare Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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