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Cheap flights from Ko Samui to Chicago O'Hare Intl Airport from ฿28,242

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
USM — ORD
7 May — 14 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 7 April 2026.

Tue 24/1110:00
USM
-
ORD
2 stops22h 35m
EVA Air
Sat 28/1123:30
ORD
-
USM
2 stops30h 25m
EVA Air
Deal found 2/4฿41,972
Mon 18/512:10
USM
-
ORD
2 stops40h 40m
Multiple Airlines
Mon 25/519:20
ORD
-
USM
2 stops34h 40m
Multiple Airlines
Deal found 2/4฿46,658
Tue 26/508:00
USM
-
ORD
2 stops44h 50m
Multiple Airlines
Wed 10/619:20
ORD
-
USM
2 stops34h 40m
Multiple Airlines
Deal found 7/4฿46,723
Tue 26/509:15
USM
-
ORD
2 stops40h 40m
Cathay Pacific
Wed 10/616:15
ORD
-
USM
1 stop39h 25m
Cathay Pacific
Deal found 4/4฿62,601
Mon 18/511:55
USM
-
ORD
1 stop38h 00m
Cathay Pacific
Mon 25/516:15
ORD
-
USM
1 stop39h 25m
Cathay Pacific
Deal found 2/4฿69,271

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 7 April 2026.

Round-trip from

฿46,658

One-way from

฿28,242
18/5-25/5
  • 18/5-25/5
  • 4 total stops
  • 75h 20m total
  • Ko Samui to Chicago
Search Deals
15/7
  • 15/7
  • 3 total stops
  • 29h 15m 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 7 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

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Mon 18/5

12:10-16:50

2 stops40h 40m

Chicago O'Hare Intl

Mon 25/5

19:20-18:00

2 stops34h 40m

฿46,658

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Tue 26/5

08:00-16:50

2 stops44h 50m

Chicago O'Hare Intl

Wed 10/6

19:20-18:00

2 stops34h 40m

฿46,723

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Tue 26/5

11:55-13:55

1 stop38h 00m

Chicago O'Hare Intl

Wed 10/6

16:15-19:40

1 stop39h 25m

฿67,351
Fastest return journey

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Mon 18/5

11:55-13:55

1 stop38h 00m

Chicago O'Hare Intl

Mon 25/5

16:15-07:10

2 stops26h 55m

฿70,995
Cheapest one-way

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Wed 15/7

14:30-07:45

3 stops29h 15m

฿28,242
Fastest single journey

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Tue 14/7

06:00-21:10

2 stops27h 10m

฿29,901

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 16/7

17:55-15:05

2 stops33h 10m

฿30,487

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Tue 14/7

11:55-14:20

1 stop38h 25m

฿53,165

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Mon 13/7

11:55-14:20

1 stop38h 25m

฿53,523

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 17/7

11:55-14:20

1 stop38h 25m

฿53,523

Flights are sorted by cheapest return flights first.

Deals found on 4/4

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.

Cheapflights Insights

Everything you need to know about your flight from Ko Samui to Chicago O'Hare Intl Airport

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

Find hourly flight availability from Ko Samui to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 April 2026.

One of the essential ways to save on airfare from Ko Samui to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 72% on airfare.

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?

    Cathay Pacific can get you from Ko Samui to Chicago O'Hare Intl Airport in just under 38h. 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.
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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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