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$1,684+ Cheap flights from Koh Samui (USM) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
USM — ORD
Jan 19 — Jan 261
Sun 1/19
Sun 1/26
1 adult, Economy
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Cheap flight deals from Koh Samui to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Koh Samui (USM) to Illinois (USIL). 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 January 14, 2025.

Round-trip from

$1,684
(Justfly.com)
From Ko Samui to Illinois
Search Deals

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 January 14, 2025.

This Justfly.com deal was found by Cheapflights users on 1/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/18:20 amUSM - ORD
2 stops24h 15mEVA Air
Sat 3/111:30 pmORD - USM
2 stops27h 05mEVA Air
Deal found 1/14$1,684
This Mytrip deal was found by Cheapflights users on 1/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/18:30 amUSM - ORD
2 stops24h 05mMultiple Airlines
Sat 3/19:55 pmORD - USM
3 stops32h 55mMultiple Airlines
Deal found 1/14$3,186

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 January 14, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Koh SamuiChicago

USM - ORD

USMORD

Ko Samui

Sat 3/1

8:20 am-7:35 pm

2 stops24h 15m

Chicago O'Hare Intl

Sat 3/1

11:30 pm-3:35 pm

2 stops27h 05m

$1,684

Koh SamuiChicago

USM - ORD

USMORD

Ko Samui

Sat 3/1

8:30 am-7:35 pm

2 stops24h 05m

Chicago O'Hare Intl

Sat 3/1

9:55 pm-7:50 pm

3 stops32h 55m

$3,186

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

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.

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 January 14, 2025.
EVA Air
8.4
Very good
1,246 reviews

Food

8.0

Crew

8.6

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

EVA Air
8.4
Very good
1,246 reviews
EVA Air
8.4
Very good
1,246 reviews

Food

8.0

Crew

8.6

Overall

8.4

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

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 $320). 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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Alternative routes for Koh Samui to Illinois

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