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Cheap flights from Ko Samui to Chicago O'Hare Intl Airport from ฿45,995

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/12. Fares are subject to change and may not be available on all flights or dates of travel.
USM — ORD
3 Jan — 10 Jan1
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 4 December 2025.

Fri 19/1210:00USM - ORD
2 stops22h 35mMultiple Airlines
Mon 29/1223:30ORD - USM
2 stops42h 40mMultiple Airlines
Deal found 2/12฿45,995
Sun 21/1221:15USM - ORD
2 stops35h 20mEVA Air
Tue 30/1223:30ORD - USM
2 stops32h 50mEVA Air
Deal found 3/12฿46,218
Tue 23/1210:00USM - ORD
2 stops22h 35mMultiple Airlines
Sun 28/1223:30ORD - USM
2 stops31h 05mMultiple Airlines
Deal found 3/12฿47,175
Sun 21/1209:20USM - ORD
2 stops23h 15mEVA Air
Mon 29/1223:30ORD - USM
2 stops31h 55mEVA Air
Deal found 3/12฿47,717
Sun 21/1209:00USM - ORD
2 stops23h 35mEVA Air
Sun 28/1223:30ORD - USM
2 stops56h 50mEVA Air
Deal found 3/12฿47,845
Tue 23/1218:40USM - ORD
2 stops28h 25mเตอร์กิชแอร์ไลน์
Sun 28/1220:20ORD - USM
2 stops32h 55mเตอร์กิชแอร์ไลน์
Deal found 4/12฿64,941
Mon 22/1217:25USM - ORD
2 stops32h 30mCathay Pacific
Mon 29/1214:35ORD - USM
1 stop40h 00mCathay Pacific
Deal found 3/12฿66,344
Tue 23/1217:25USM - ORD
2 stops32h 30mCathay Pacific
Mon 29/1214:35ORD - USM
1 stop40h 00mCathay Pacific
Deal found 3/12฿67,078
Wed 24/1211:40USM - ORD
1 stop38h 15mCathay Pacific
Mon 29/1214:35ORD - USM
1 stop40h 00mCathay Pacific
Deal found 3/12฿70,331
Wed 24/1219:35USM - ORD
2 stops27h 30mMultiple Airlines
Tue 30/1214:35ORD - USM
1 stop40h 00mMultiple Airlines
Deal found 3/12฿73,617

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 4 December 2025.

Round-trip from

฿45,995
19/12-29/12
  • 19/12-29/12
  • 4 total stops
  • 65h 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 4 December 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

Fri 19/12

10:00-19:35

2 stops22h 35m

Chicago O'Hare Intl

Mon 29/12

23:30-07:10

2 stops42h 40m

฿45,995

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Tue 23/12

07:15-19:35

2 stops25h 20m

Chicago O'Hare Intl

Tue 30/12

23:30-19:50

2 stops31h 20m

฿46,218

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Mon 22/12

20:30-19:35

2 stops36h 05m

Chicago O'Hare Intl

Tue 30/12

23:30-20:25

2 stops31h 55m

฿46,218

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Sun 21/12

21:15-19:35

2 stops35h 20m

Chicago O'Hare Intl

Tue 30/12

23:30-21:20

2 stops32h 50m

฿46,218

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 25/12

07:15-19:35

2 stops25h 20m

Chicago O'Hare Intl

Tue 30/12

23:30-20:25

2 stops31h 55m

฿46,218

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Wed 24/12

09:20-19:35

2 stops23h 15m

Chicago O'Hare Intl

Mon 29/12

23:30-20:25

2 stops31h 55m

฿47,717

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Sun 21/12

09:20-19:35

2 stops23h 15m

Chicago O'Hare Intl

Mon 29/12

23:30-20:25

2 stops31h 55m

฿47,717

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 25/12

10:00-19:35

2 stops22h 35m

Chicago O'Hare Intl

Mon 29/12

23:30-20:25

2 stops31h 55m

฿47,717

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Thu 25/12

08:30-19:35

2 stops24h 05m

Chicago O'Hare Intl

Sun 28/12

23:30-20:25

2 stops55h 55m

฿47,845

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Tue 23/12

18:40-10:05

2 stops28h 25m

Chicago O'Hare Intl

Sun 28/12

20:20-18:15

2 stops32h 55m

฿64,941

Flights are sorted by cheapest return flights first.

Deals found on 2/12

Showing 1-10 of 11 results
1
2

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 4 December 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.

  • 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 25h 20m. 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

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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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