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$944+ Cheap flights from Ko Samui (USM) to Illinois

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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
USM — ORD
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Ko Samui to Illinois

Keep the following information in mind while searching for Ko Samui to Illinois flight deals. Data was last updated July 30, 2025.

Round-trip from

$1,332
(EVA Air)

One-way from

$944
(Mytrip)
From Ko Samui to Illinois
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One-way flight from Ko Samui to Illinois
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Find flight deals from Ko Samui to Illinois

Cheapest flights from Ko Samui to Illinois
Explore the most affordable flight options available from Ko Samui to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This EVA Air deal was found by Cheapflights users on 7/29. 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 9/127:15 pmUSM - ORD
2 stops37h 30mEVA Air
Tue 10/1412:30 amORD - USM
2 stops26h 15mEVA Air
Deal found 7/29$1,332
This EaseMyTrip deal was found by Cheapflights users on 7/30. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:55 amUSM - ORD
1 stop39h 30mMultiple Airlines
Wed 10/154:00 pmORD - USM
2 stops27h 20mMultiple Airlines
Deal found 7/30$1,463
This EaseMyTrip deal was found by Cheapflights users on 7/30. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:55 amUSM - ORD
1 stop39h 30mCathay Pacific
Wed 10/154:00 pmORD - USM
1 stop38h 35mCathay Pacific
Deal found 7/30$1,517
This Emirates deal was found by Cheapflights users on 7/30. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:00 amUSM - ORD
2 stops43h 45mEmirates
Wed 10/158:35 pmORD - USM
2 stops32h 20mEmirates
Deal found 7/30$1,553
This Turkish Airlines deal was found by Cheapflights users on 7/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:25 pmUSM - ORD
2 stops29h 15mTurkish Airlines
Tue 10/147:50 pmORD - USM
2 stops31h 55mTurkish Airlines
Deal found 7/29$1,593
This Qatar Airways deal was found by Cheapflights users on 7/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/101:30 pmUSM - ORD
2 stops37h 35mQatar Airways
Tue 10/147:20 pmORD - USM
2 stops27h 10mQatar Airways
Deal found 7/28$1,778

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ko Samui to Illinois 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 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from Ko Samui to Illinois that are best for you.

Fly from

Ko Samui

Fly to

Illinois

Route

Depart

Return

Price

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 9/12

7:15 pm-8:45 pm

2 stops37h 30m

Chicago O'Hare Intl

Tue 10/14

12:30 am-2:45 pm

2 stops26h 15m

$1,332

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 9/12

10:55 am-2:25 pm

1 stop39h 30m

Chicago O'Hare Intl

Wed 10/15

4:00 pm-7:20 am

2 stops27h 20m

$1,463

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 9/12

10:55 am-2:25 pm

1 stop39h 30m

Chicago O'Hare Intl

Wed 10/15

4:00 pm-6:35 pm

1 stop38h 35m

$1,517

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 9/12

8:00 am-3:45 pm

2 stops43h 45m

Chicago O'Hare Intl

Wed 10/15

8:35 pm-4:55 pm

2 stops32h 20m

$1,553

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 10/10

4:25 pm-9:40 am

2 stops29h 15m

Chicago O'Hare Intl

Tue 10/14

7:50 pm-3:45 pm

2 stops31h 55m

$1,593

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 10/10

1:30 pm-3:05 pm

2 stops37h 35m

Chicago O'Hare Intl

Tue 10/14

7:20 pm-10:30 am

2 stops27h 10m

$1,778

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Sun 8/17

7:30 pm-5:40 am

3 stops46h 10m

$944

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Ko Samui to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Ko Samui with our price prediction graph.
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 Ko Samui to Illinois

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

Find hourly flight availability from Ko Samui to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ko Samui to Illinois as you normally would.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated July 30, 2025.
See what other customers who have flown with EVA Air, Emirates, and Cathay Pacific from Ko Samui to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,222 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Emirates
8.1
Very good
3,299 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Cathay Pacific
7.6
Good
949 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Qatar Airways
7.4
Good
3,607 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Turkish Airlines
7.3
Good
3,928 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from Ko Samui to Illinois. 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 Illinois?

    Located just 2.1 mi from the city center, Ko Samui (USM) is the airport most travelers will use when flying to Illinois from Ko Samui.

  • Can I find deals for flights from Ko Samui to Illinois that include hotel bookings?

    Yes. In addition to deals on Ko Samui to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ko Samui to Illinois?

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

  • Can I find deals for business class flights from Ko Samui to Illinois?

    Yes. Cheapflights offers flight deals from Ko Samui to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ko Samui to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Ko Samui to Illinois (average of $245). Flying from Ko Samui to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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