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Koh Samui

$635+ Cheap flights from Chicago (CHI) 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.
CHI — USM
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Chicago to Koh Samui

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

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,165
(Trip.com)

One-way from

$635
(Ovago)
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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One-way flight from Chicago (CHI) to Ko Samui
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Find flight deals from Chicago to Koh Samui

Cheapest flights from Chicago to Koh Samui
Explore the most affordable flight options available from Chicago 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.
Fri 9/1912:30 amORD - USM
2 stops26h 40mEVA Air
Mon 9/298:45 amUSM - ORD
2 stops24h 00mEVA Air
Deal found 1/20$1,149
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.
Fri 9/1912:30 amORD - USM
2 stops26h 40mMultiple Airlines
Mon 9/298:45 amUSM - ORD
2 stops24h 00mMultiple Airlines
Deal found 1/20$1,156
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.
Tue 3/46:09 pmORD - USM
2 stops35h 06mBangkok Airways
Tue 3/111:25 pmUSM - ORD
2 stops28h 52mBangkok Airways
Deal found 1/20$1,253
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.
Sat 9/201:55 pmORD - USM
2 stops33h 45mEtihad Airways
Mon 9/297:10 pmUSM - ORD
2 stops49h 45mEtihad Airways
Deal found 1/19$1,320
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.
Sat 9/2011:45 pmORD - USM
2 stops30h 15mTurkish Airlines
Mon 9/295:55 pmUSM - ORD
2 stops27h 55mTurkish Airlines
Deal found 1/20$1,446
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.
Mon 8/187:40 pmORD - USM
2 stops26h 30mQatar Airways
Tue 8/269:30 pmUSM - ORD
2 stops29h 55mQatar Airways
Deal found 1/19$1,647
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.
Fri 3/72:40 pmORD - USM
1 stop39h 55mCathay Pacific
Fri 3/1411:40 amUSM - ORD
1 stop38h 20mCathay Pacific
Deal found 1/21$1,849
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.
Sat 9/209:00 pmORD - USM
2 stops36h 10mSingapore Airlines
Mon 9/294:25 pmUSM - ORD
3 stops38h 18mSingapore Airlines
Deal found 1/20$1,884
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.
Mon 8/188:35 pmORD - USM
2 stops36h 35mEmirates
Wed 8/274:25 pmUSM - ORD
2 stops35h 20mEmirates
Deal found 1/19$1,896
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.
Thu 3/67:05 pmORD - USM
2 stops31h 30mSWISS
Thu 3/1310:00 amUSM - ORD
2 stops43h 15mSWISS
Deal found 1/20$3,823

Find flights from Chicago to Koh Samui within your budget

Customize your flight search to find flights from Chicago 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

Any airport

Fly to

Any airport

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

$1,165

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

$1,191

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

$1,253

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

$1,832

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

$1,849

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

$3,720

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

$3,823

ChicagoKoh Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 3/6

11:30 pm-7:45 am

2 stops43h 15m

$672

ChicagoKoh Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 3/6

2:40 pm-7:35 pm

1 stop39h 55m

$1,086

ChicagoKoh Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Thu 3/6

4:40 pm-10:35 am

3 stops28h 55m

$1,478

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Compare providers for flights from Chicago to Koh 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 Koh Samui in January.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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-Koh Samui flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago-Koh Samui flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Chicago-Koh Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Koh Samui flights, Cheapflights users trust AranGrant the most. AranGrant 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-Koh 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 Koh Samui

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

Travel insights for flights from Chicago to Koh Samui

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

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

Use this chart to determine the cheapest time to fly round-trip from Chicago to Koh Samui. Price data was last updated on January 21, 2025.

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

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.
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Comfort

8.3

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

EVA Air
8.4
Very good
1,255 reviews
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Comfort

8.3

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Bangkok Airways
8.1
Very good
129 reviews
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Comfort

8.3

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Qatar Airways
7.5
Good
3,754 reviews
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Comfort

8.3

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Cathay Pacific
7.5
Good
830 reviews
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Comfort

8.3

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

SWISS
7.5
Good
1,600 reviews
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Comfort

8.3

Reviews

1 / 10

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 Chicago to Koh 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 Koh 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 Koh 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 Koh Samui round-trip?

    Currently priced at $1,191, EVA Air will fly you from Chicago to Koh Samui and back. In addition to EVA Air, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Bangkok Airways and Cathay Pacific - these airlines can fly you to your destination from $1,253 and $1,849, respectively.

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

    The cheapest airlines for a one-way flight from Chicago to Koh Samui are EVA Air ($635), Cathay Pacific ($948), and Qatar Airways ($1,522).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago to Koh 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 Pha Ngan
Ko Tao

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Top airline flying from Chicago to Koh Samui

Discover the top airline that operate flights from Chicago 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.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,147Average$1,520FlexibilityNo cancel feeOn-time74%
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