How long is the flight from Ko Samui to Chicago?

Airlines like Etihad Airways and EVA Air fly from Ko Samui to Chicago in about 35h 05m. The time it takes to get you to your destination can typically vary by up to 12h 20m. Ko Samui and Chicago are separated by a distance of 8835 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Chicago 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 Chicago when rainfall is around 1.7 in.

If weather is an important factor for your trip to Chicago, 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).

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

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

What airport do you fly from for flights from Ko Samui to Chicago?

Ko Samui (USM) is the airport you will fly out of if you book a flight from Ko Samui to Chicago. You should not have trouble finding flights to Chicago from Ko Samui; the airport handles an average of 0 outbound flights to Chicago per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Ko Samui airport to Chicago. It is only a 2.1 mi journey to Ko Samui (USM) from Ko Samui’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Ko Samui to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$714+ Cheap Flights from Ko Samui to Chicago

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Cheap flight deals from Ko Samui to Chicago

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Cheapest flights from Ko Samui to Chicago
Explore the most affordable flight options available from Ko Samui to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.

Tue 11/109:30 pm -

2 stops47h 25m

Sat 11/141:10 pm -

2 stops32h 25m

Deal found 9/4

$1,411

Tue 11/109:30 pm -

2 stops35h 05m

Sat 11/1411:30 pm -

2 stops26h 25m

Deal found 9/1

$1,458

Find flight deals from Ko Samui to Chicago

Round-trip from	$1,411 (Etihad Airways)
One-way from	$714 (Mytrip)

From Ko Samui to Chicago (CHI)

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One-way flight from Ko Samui to Chicago (CHI)

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Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Ko SamuiChicago

USM Ko Samui - ORD Chicago O'Hare Intl

USMORD

Ko Samui

Mon 9/21

6:00 am-8:45 pm

2 stops26h 45m

Chicago O'Hare Intl

Wed 12/31

12:00 am-1:00 pm

Nonstop0h 00m

$714

Ko SamuiChicago

USM Ko Samui - ORD Chicago O'Hare Intl

USMORD

Ko Samui

Mon 9/21

11:55 am-1:55 pm

1 stop38h 00m

Chicago O'Hare Intl

Wed 12/31

12:00 am-1:00 pm

Nonstop0h 00m

$987

Ko SamuiChicago

USM Ko Samui - ORD Chicago O'Hare Intl

USMORD

Ko Samui

Tue 11/10

9:30 pm-7:55 am

2 stops47h 25m

Chicago O'Hare Intl

Sat 11/14

1:10 pm-10:35 am

2 stops32h 25m

$1,411

Ko SamuiChicago

USM Ko Samui - ORD Chicago O'Hare Intl

USMORD

Ko Samui

Tue 11/10

9:30 pm-7:35 pm

2 stops35h 05m

Chicago O'Hare Intl

Sat 11/14

11:30 pm-2:55 pm

2 stops26h 25m

$1,458

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/1

Sorted by cheapest first

Best time to book a flight from Ko Samui to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Ko Samui with our price prediction graph.

USM-CHI

USM-ORD

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.

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Everything you need to know about your flight from Ko Samui to Chicago

USM-CHI

USM-ORD

No data available for this route at this time. Please check back soon.

The best insider tips for Ko Samui to Chicago flights

Cheapflights partnered with top experts to bring you the best recommendations for your Ko Samui to Chicago trip

Our travel experts

Marisa Garcia

Expert on Frontier

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Harriet Baskas

Expert on United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

What airport do you fly from for flights from Ko Samui to Chicago?
Ko Samui (USM) is the airport you will fly out of if you book a flight from Ko Samui to Chicago. You should not have trouble finding flights to Chicago from Ko Samui; the airport handles an average of 0 outbound flights to Chicago per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Ko Samui airport to Chicago. It is only a 2.1 mi journey to Ko Samui (USM) from Ko Samui’s city center.
How long is the flight from Ko Samui to Chicago?
Airlines like Etihad Airways and EVA Air fly from Ko Samui to Chicago in about 35h 05m. The time it takes to get you to your destination can typically vary by up to 12h 20m. Ko Samui and Chicago are separated by a distance of 8835 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Can I find deals for flights from Ko Samui to Chicago that include hotel bookings?
Yes. In addition to deals on Ko Samui to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ko Samui to Chicago?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to Chicago.
Can I find deals for business class flights from Ko Samui to Chicago?
Yes. Cheapflights offers flight deals from Ko Samui to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$714+ Cheap flights from Ko Samui (USM) to Chicago (CHI)

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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ko Samui to Chicago with Cheapflights

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Cheap flight deals from Ko Samui to Chicago

Cheapest flights from Ko Samui to ChicagoExplore the most affordable flight options available from Ko Samui to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.

Explore the most affordable flight options available from Ko Samui to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.

Best flights from Ko Samui to ChicagoDiscover carefully curated flight deals from Ko Samui to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.

Discover carefully curated flight deals from Ko Samui to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.

One-way flights from Ko Samui to ChicagoSearch for one-way flight options from Ko Samui to Chicago. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.

Search for one-way flight options from Ko Samui to Chicago. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.

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Best time to book a flight from Ko Samui to Chicago

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The best insider tips for Ko Samui to Chicago flights

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Cheapflights partnered with top experts to bring you the best recommendations for your Ko Samui to Chicago trip

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Related info for your journey

What airport do you fly from for flights from Ko Samui to Chicago?

How long is the flight from Ko Samui to Chicago?

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

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

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

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Cheapest flights from Ko Samui to Chicago
Explore the most affordable flight options available from Ko Samui to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.

Best flights from Ko Samui to Chicago
Discover carefully curated flight deals from Ko Samui to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.

One-way flights from Ko Samui to Chicago
Search for one-way flight options from Ko Samui to Chicago. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.