$635+ Cheap flights from Illinois to Koh Samui (USM)
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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Koh Samui with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Koh Samui
Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Koh Samui (USM). 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 21, 2025.
Round-trip from | $1,165 (Trip.com) |
|---|---|
One-way from | $635 (Ovago) |
Find flight deals from Illinois to Koh Samui
Cheapest flights from Illinois to Koh SamuiExplore the most affordable flight options available from Illinois to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.
Explore the most affordable flight options available from Illinois to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.
This Justfly.com deal was found by Cheapflights users on 1/20. 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.
This FlightHub deal was found by Cheapflights users on 1/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kissandfly.com deal was found by Cheapflights users on 1/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ovago deal was found by Cheapflights users on 1/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 1/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gurufare deal was found by Cheapflights users on 1/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 1/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gurufare deal was found by Cheapflights users on 1/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Emirates deal was found by Cheapflights users on 1/19. 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.
This SWISS deal was found by Cheapflights users on 1/20. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from Illinois to Koh Samui within your budget
Customize your flight search to find flights from Illinois to Koh Samui 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 21, 2025.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Tue 3/4
11:25 am-8:45 pm
2 stops44h 20m
Ko Samui
Tue 3/11
9:05 pm-9:40 am
2 stops48h 35m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Thu 3/6
11:30 pm-7:50 pm
2 stops31h 20m
Ko Samui
Thu 3/13
9:20 am-8:35 pm
2 stops23h 15m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Tue 3/4
6:09 pm-6:15 pm
2 stops35h 06m
Ko Samui
Tue 3/11
1:25 pm-6:17 am
2 stops28h 52m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Thu 6/12
7:50 pm-4:35 pm
2 stops32h 45m
Ko Samui
Tue 6/17
5:25 pm-9:50 am
2 stops28h 25m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Fri 3/7
2:40 pm-7:35 pm
1 stop39h 55m
Ko Samui
Fri 3/14
11:40 am-2:00 pm
1 stop38h 20m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Sun 6/29
11:35 am-9:10 pm
3 stops45h 35m
Ko Samui
Sat 7/5
1:30 pm-11:25 pm
3 stops45h 55m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Thu 3/6
7:05 pm-3:35 pm
2 stops31h 30m
Ko Samui
Thu 3/13
10:00 am-5:15 pm
2 stops43h 15m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Thu 3/6
11:30 pm-7:45 am
2 stops43h 15m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Thu 3/6
2:40 pm-7:35 pm
1 stop39h 55m
ChicagoKoh Samui
ORD - USM
ORDUSM
Chicago O'Hare Intl
Thu 3/6
4:40 pm-10:35 am
3 stops28h 55m
Best time to book a flight from Illinois to Koh Samui
Have a flexible travel schedule? Discover the best time to fly to Koh Samui from Illinois with our price prediction graph.
Travel insights for flights from Illinois to Koh Samui
Get recent, data-driven insights about flights from Illinois to Koh Samui including ideal travel times, pricing trends, and more.
What is the cheapest time of day to fly from IL to USM?
Find hourly flight availability from Illinois to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.
When flying from Illinois to Koh Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Rainfall in Koh Samui by month
Plan your trip to Koh Samui by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Koh Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Koh Samui when rainfall is around 2.3 in.
Temperature in Koh Samui by month
Plan your trip to Koh Samui by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).
Reviews of airlines servicing Koh Samui
Get insights into the airlines that provide service to Koh Samui. 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 Koh Samui. Reviews last updated January 21, 2025.
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Koh Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Illinois to Koh Samui
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Illinois to Koh Samui
Discover the top airline that operate flights from Illinois to Koh Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,147 | Average$1,520 | FlexibilityNo cancel fee | On-time74% |