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Ko Samui

$601+ Cheap flights from Chicago (CHI) to Ko 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — USM
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
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Cheap flight deals from Chicago to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Ko 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 April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,180
(oojo)

One-way from

$601
(Kiwi.com)
Provider with most accurate pricing for Chicago (CHI)-Ko Samui flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Ko Samui flights.
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From Chicago (CHI) to Ko Samui
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One-way flight from Chicago (CHI) to Ko Samui
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Find flight deals from Chicago to Ko Samui

Cheapest flights from Chicago to Ko Samui
Explore the most affordable flight options available from Chicago to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.

This FlightHub deal was found by Cheapflights users on 3/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3012:30 amORD - USM
2 stops33h 05mMultiple Airlines
Tue 10/79:15 amUSM - ORD
2 stops23h 30mMultiple Airlines
Deal found 3/30$1,111
This FlightHub deal was found by Cheapflights users on 3/31. 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.
Fri 9/1912:30 amORD - USM
2 stops28h 35mEVA Air
Mon 9/297:00 amUSM - ORD
2 stops25h 45mEVA Air
Deal found 3/31$1,156
This Ovago deal was found by Cheapflights users on 3/31. 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.
Sat 9/2012:10 pmORD - USM
2 stops41h 35mJapan Airlines
Mon 9/297:10 pmUSM - ORD
2 stops25h 55mJapan Airlines
Deal found 3/31$1,248
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:50 pmORD - USM
2 stops24h 25mTurkish Airlines
Tue 10/79:00 pmUSM - ORD
2 stops32h 55mTurkish Airlines
Deal found 3/30$1,445
This Gurufare deal was found by Cheapflights users on 3/31. 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.
Sat 9/204:00 pmORD - USM
1 stop38h 35mCathay Pacific
Mon 9/2910:55 amUSM - ORD
1 stop39h 30mCathay Pacific
Deal found 3/31$1,520
This Gurufare deal was found by Cheapflights users on 3/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:42 pmORD - USM
2 stops36h 28mSingapore Airlines
Tue 10/74:25 pmUSM - ORD
3 stops40h 29mSingapore Airlines
Deal found 3/30$1,820
This British Airways deal was found by Cheapflights users on 3/31. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/137:10 pmORD - USM
2 stops35h 05mBritish Airways
Tue 5/201:30 pmUSM - ORD
2 stops34h 15mBritish Airways
Deal found 3/31$1,982
This Booking.com deal was found by Cheapflights users on 3/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/154:20 pmORD - USM
3 stops32h 25mKLM
Thu 5/221:30 pmUSM - ORD
2 stops36h 40mKLM
Deal found 3/31$2,066
This Emirates deal was found by Cheapflights users on 3/31. 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.
Thu 5/158:35 pmORD - USM
2 stops27h 05mEmirates
Thu 5/225:50 pmUSM - ORD
2 stops33h 55mEmirates
Deal found 3/31$2,267

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago to Ko 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 April 1, 2025.
Use the filters below to find and compare flights from Chicago to Ko Samui that are best for you.

Fly from

Chicago

Fly to

Ko Samui

Route

Depart

Return

Price

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Mon 4/28

12:30 am-8:30 pm

2 stops32h 00m

Ko Samui

Tue 5/6

8:00 am-9:00 pm

2 stops25h 00m

$1,180

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 5/4

5:45 pm-10:10 am

2 stops28h 25m

Ko Samui

Sun 5/11

8:45 am-8:40 am

2 stops59h 55m

$1,224

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sat 5/10

11:25 am-8:15 am

2 stops32h 50m

Ko Samui

Sat 5/31

7:10 pm-5:55 pm

2 stops34h 45m

$1,499

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 5/4

4:00 pm-6:35 pm

1 stop38h 35m

Ko Samui

Sun 5/11

10:55 am-2:25 pm

1 stop39h 30m

$1,728

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 5/13

7:10 pm-6:15 pm

2 stops35h 05m

Ko Samui

Tue 5/20

1:30 pm-11:45 am

2 stops34h 15m

$1,982

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 5/15

4:20 pm-12:45 pm

3 stops32h 25m

Ko Samui

Thu 5/22

1:30 pm-2:10 pm

2 stops36h 40m

$2,066

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 5/15

8:35 pm-11:40 am

2 stops27h 05m

Ko Samui

Thu 5/22

5:50 pm-3:45 pm

2 stops33h 55m

$2,267

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 4/29

1:24 pm-6:15 pm

3 stops40h 51m

Ko Samui

Tue 5/6

1:30 pm-9:54 pm

3 stops44h 24m

$2,443

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 5/15

7:05 pm-12:45 pm

2 stops29h 40m

Ko Samui

Thu 5/22

9:30 am-12:10 pm

2 stops38h 40m

$3,822

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 4/15

12:00 pm-7:35 am

2 stops31h 35m

$601

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 14 results
1
2

Compare providers for flights from Chicago to Ko Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Ko Samui in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Ko Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Ko Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Ko Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Ko Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Chicago 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 Chicago to Ko Samui

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

Find hourly flight availability from Chicago to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2025.

One of the essential ways to save on airfare from Chicago to Ko Samui is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 64% on airfare.

What is the cheapest day to fly from Chicago to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Ko Samui. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Chicago to Ko Samui flight should consider departing on Thursday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ko Samui by month

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

In terms of precipitation, rainfall in Ko 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 Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

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

If weather is an important factor for your trip to Ko 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 Ko Samui

Get insights into the airlines that provide service to Ko 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 Ko Samui. Reviews last updated April 1, 2025.
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,170 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Japan Airlines
8.3
Very good
1,440 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Singapore Airlines
8.1
Very good
1,286 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Emirates
8.0
Very good
3,192 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
KLM
7.8
Good
1,321 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Boarding

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Ko Samui. 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 into for flights to Ko Samui from Chicago?

    Ko Samui (USM), located 2.1 mi from the city center, is the airport you fly into when you book flights from Chicago to Ko Samui. 1 airline have flights to Ko Samui from Chicago on a regular basis. Booking flights from Chicago to Ko Samui should not be difficult; the airport handles an average of 0 inbound flights from Chicago per day.

  • What are the cheapest airlines flying from Chicago to Ko Samui round-trip?

    According to our current data, EVA Air ($1,180), Turkish Airlines ($1,499), and Cathay Pacific ($1,728) offers the cheapest pricing from Chicago to Ko Samui.

  • What are the cheapest airlines to fly from Chicago to Ko Samui one-way?

    To fly one-way, consider booking your trip with EVA Air, which is currently one of the cheapest options available, starting at $731. Japan Airlines flights start at $1,215 while deals on Cathay Pacific start at $1,309 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago to Ko Samui 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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Top airline flying from Chicago to Ko Samui

Discover the top airline that operate flights from Chicago to Ko 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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,147Average$1,311FlexibilityNo cancel feeOn-time74%

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