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$1,277+ Cheap flights from Koh 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
USM — ORD
Feb 28 — Mar 71
Fri 2/28
Fri 3/7
1 adult, Economy
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Find flight deals from Koh Samui to Illinois

Cheapest flights from Koh Samui to Illinois
Explore the most affordable flight options available from Koh Samui to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 23, 2025.

This EVA Air deal was found by Cheapflights users on 2/22. 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 9/127:00 amUSM - ORD
2 stops25h 45mEVA Air
Tue 10/1412:30 amORD - USM
2 stops25h 15mEVA Air
Deal found 2/22$1,305
This Emirates deal was found by Cheapflights users on 2/22. 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 2/22$1,486
This EaseMyTrip deal was found by Cheapflights users on 2/22. 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 9/125:55 pmUSM - ORD
2 stops33h 10mQatar Airways
Wed 10/157:41 pmORD - USM
3 stops33h 24mQatar Airways
Deal found 2/22$1,874
This EaseMyTrip deal was found by Cheapflights users on 2/22. 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 2/22$2,380

Find flights from Koh Samui to Illinois within your budget

Customize your flight search to find flights from Koh 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 February 23, 2025.

Fly from

Koh Samui

Fly to

Illinois

Route

Depart

Return

Price

Koh SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 8/15

7:15 pm-3:45 pm

2 stops32h 30m

$1,277

Koh SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 8/15

10:55 am-2:25 pm

1 stop39h 30m

$1,952

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Best time to book a flight from Koh Samui to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Koh 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.

Travel insights for flights from Koh Samui to Illinois

Get recent, data-driven insights about flights from Koh Samui to Illinois including ideal travel times, pricing trends, and more.

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

Find hourly flight availability from Koh 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 February 23, 2025.

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 February 23, 2025.
Cathay Pacific
7.5
Good
822 reviews

Comfort

7.6

Food

7.3

Crew

8.0

Overall

7.5

Boarding

7.9

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Anonymous,Jan 2025

MAN - HKG

An airline like Cathy Pacific should not serve vegetarian meal for people who pre-booked Muslim meal. Also, the quality / variety of the meals can be improved.

Cathay Pacific
7.5
Good
822 reviews
Cathay Pacific
7.5
Good
822 reviews

Comfort

7.6

Food

7.3

Crew

8.0

Overall

7.5

Boarding

7.9

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Anonymous,Jan 2025

MAN - HKG

An airline like Cathy Pacific should not serve vegetarian meal for people who pre-booked Muslim meal. Also, the quality / variety of the meals can be improved.

Related info for your journey

Find useful and relevant information for your journey from Koh 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 Koh 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 Koh Samui.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Koh 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 Koh Samui to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Koh Samui to Illinois (average of $245). Flying from Koh 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.

See more FAQs

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