ORD - USM

$1,044 Find Cheap Flights from Chicago to Ko Samui

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Ko Samui departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ko Samui

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Ko Samui, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Ko Samui, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,044
Multiple Airlines
Sat 4/25Wed 5/6
ORD - USM • 2 stops
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Polaris offers lie-flat seats for comfort.
Sun Country Air's preferred boarding adds comfort.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Etihad Airways
Cheapest • from $1,498 (round-trip)
EVA Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Chicago and Ko Samui. You'll need at least 2 connections.
Insights
Insights
Insights
Insights
Avoid delays
JetBlue
Most punctual • 80% on-time
Morning flights
Best time • Fewest delays
Insights
Insights
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Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ko Samui!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Chicago to Ko Samui (ORD-USM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Ko Samui that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Ko Samui

Sat, Apr 25 - Wed, May 6
Multiple Airlines Logo
2:00 pm - 7:10 am
ORD
-
USM
29h 10m
2 stops
Multiple Airlines Logo
11:25 am - 8:35 am
USM
-
ORD
33h 10m
2 stops
$1,044Multiple Airlines
Wed, May 6 - Wed, May 13
Multiple Airlines Logo
2:00 pm - 7:10 am
ORD
-
USM
29h 10m
2 stops
Multiple Airlines Logo
7:50 am - 8:35 am
USM
-
ORD
36h 45m
2 stops
$1,063Multiple Airlines
Sun, May 3 - Sun, May 10
Multiple Airlines Logo
2:00 pm - 7:10 am
ORD
-
USM
29h 10m
2 stops
Multiple Airlines Logo
5:55 pm - 8:35 am
USM
-
ORD
26h 40m
2 stops
$1,093Multiple Airlines
Wed, May 13 - Mon, May 18
Multiple Airlines Logo
2:00 pm - 8:25 am
ORD
-
USM
30h 25m
2 stops
Multiple Airlines Logo
3:25 pm - 8:35 am
USM
-
ORD
29h 10m
2 stops
$1,106Multiple Airlines
Mon, Apr 13 - Mon, Apr 27
Multiple Airlines Logo
1:00 pm - 8:25 am
ORD
-
USM
55h 25m
2 stops
Multiple Airlines Logo
9:15 am - 8:35 am
USM
-
ORD
35h 20m
2 stops
$1,118Multiple Airlines
Wed, Jun 3 - Tue, Jun 9
Multiple Airlines Logo
2:00 pm - 7:10 am
ORD
-
USM
29h 10m
2 stops
Multiple Airlines Logo
7:50 am - 8:35 am
USM
-
ORD
36h 45m
2 stops
$1,310Multiple Airlines
Fri, Jun 5 - Wed, Jun 10
Multiple Airlines Logo
2:00 pm - 7:10 am
ORD
-
USM
29h 10m
2 stops
Multiple Airlines Logo
7:50 am - 8:35 am
USM
-
ORD
36h 45m
2 stops
$1,351Multiple Airlines
Fri, Apr 10 - Tue, Apr 14
Multiple Airlines Logo
7:20 pm - 4:55 pm
ORD
-
USM
33h 35m
2 stops
Multiple Airlines Logo
9:00 pm - 3:05 pm
USM
-
ORD
30h 05m
2 stops
$1,391Multiple Airlines
Sun, Apr 12 - Mon, Apr 27
Multiple Airlines Logo
12:30 am - 8:30 pm
ORD
-
USM
32h 00m
2 stops
Multiple Airlines Logo
7:45 pm - 7:25 pm
USM
-
ORD
35h 40m
3 stops
$1,424Multiple Airlines
Fri, Apr 24 - Wed, May 6
Multiple Airlines Logo
12:30 am - 1:45 pm
ORD
-
USM
25h 15m
2 stops
Multiple Airlines Logo
10:05 am - 6:00 am
USM
-
ORD
31h 55m
3 stops
$1,453Multiple Airlines
Booking Insights

KAYAK's insights & trends for Chicago to Ko Samui flights

Get data-powered insights and trends into flights from Chicago to Ko Samui to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chicago to Ko Samui?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Ko Samui clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ko Samui on a Thursday and more expensive on a Friday. On your return trip to Chicago, you should consider flying back on a Friday, and avoid Saturdays for better deals.

Find deals
Expert advice

Expert advice for your flight from Chicago to Ko Samui

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American 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.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Sun Country Air

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Delta and United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more

Good to know

Cheapest flight$1,044
Flight from Chicago to Ko Samui

When to book flights from Chicago to Ko Samui

Are your dates flexible? Find out the best times to travel from Chicago to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to Ko Samui flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Ko Samui?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Ko Samui was $1,044 for a round-trip ticket.

  • Do I need a passport to fly between Chicago and Ko Samui?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Chicago and on arrival in Ko Samui.

  • Which aircraft models fly most regularly from Chicago to Ko Samui?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chicago to Ko Samui?

    Star Alliance is the only airline alliance operating flights between Chicago and Ko Samui.

  • How does KAYAK find such low prices on flights from Chicago to Ko Samui?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Ko Samui.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Ko Samui?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Ko Samui?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ko Samui with an airline and back to Chicago with another airline. Booking your flights between Chicago and USM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Ko Samui?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Chicago to Ko Samui

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Ko Samui. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Ko Samui? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
EVA AirOverall score based on 1381 reviews
8.3Comfort
8.0Entertainment
8.1Food
8.6Crew
8.4Boarding
Airline reviews

Overall was good but it would be good if the airline is providing snack such as sandwich or instant noodle between meals for LA to Taipei

8.0 ExcellentAnonymous, Mar 2026
LAX - TPE
Read more EVA Air reviews

Overall was good but it would be good if the airline is providing snack such as sandwich or instant noodle between meals for LA to Taipei

Amazing customer service. BUT!! It would be nice if the flight attendants SMILE a little more, I know they are doing their job, but it is importantly to smile back and be warm to passengers. Nobody is trying to hit on them, it’s just being polite. So, please Taiwanese flight attendants: SMILE MORE WHEN YOU INTERACT WITH PAYING CUSTOMERS

It was easy going check in was easy and pretty fast entertainment was up to date on movies and food was ok

Premium Economy seats were more comfortable than other airlines I have recently been on. Great staff. Food was unremarkable.

From checking at the airport to end of flights, attentive and caring personnel, comfortable seating, great food. I plan on using EVA again. Thank you, all.

Very nice, I feel I got good value for the price.

Amazing one of the best airlines i have ever traveled with. I live with medical issues called psoriatic arthritis and was in pain on the flight. The flight crew made sure I had fresh ice pack ever hour. Going above an beyond with service and care ⭐️⭐️⭐️⭐️⭐️.

Certain flight crew member were rude and short with me when I asked questions.

We were very impressed with the modern plane its amenities, as well as the services of flight attendants.

Everything was great, however the seats in the back are very small. Not as Comfortable as I would have liked.

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

Information on your arrival and departure airports

Chicago (ORD)
Ko Samui (USM)