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Cheap flights from Ko Samui to Chicago O'Hare Intl Airport from ฿19,113

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 17/12. Fares are subject to change and may not be available on all flights or dates of travel.
USM — ORD
12 Dec — 19 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 12 November 2025.

Fri 14/1121:10USM - ORD
2 stops35h 25mEVA Air
Tue 18/1123:30ORD - USM
2 stops27h 55mEVA Air
Deal found 10/11฿48,625
Fri 14/1113:25USM - ORD
2 stops33h 40mเตอร์กิชแอร์ไลน์
Tue 18/1111:50ORD - USM
2 stops30h 40mเตอร์กิชแอร์ไลน์
Deal found 9/11฿61,291

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 12 November 2025.
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

Ko Samui

Fly to

O'Hare Intl

Route

Depart

Return

Price

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Wed 17/12

21:10-06:05

3 stops45h 55m

฿19,113

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 6/2

18:40-14:41

2 stops33h 01m

฿20,312

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 23/1

18:40-16:42

2 stops35h 02m

฿20,765

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 13/2

09:20-07:35

3 stops35h 15m

฿21,510

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Sat 28/2

18:15-07:35

3 stops50h 20m

฿22,223

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 27/2

12:30-07:35

3 stops32h 05m

฿22,514

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 26/2

19:00-07:35

3 stops49h 35m

฿23,389

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Sun 15/2

19:00-14:41

2 stops32h 41m

฿25,268

Flights are sorted by cheapest return flights first.

Deals found on 11/11

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 12 November 2025.

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.

  • 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

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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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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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