ORD - USM

$1,054 Find Cheap Flights from Chicago to Ko Samui

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Ko Samui departing on 5/22. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$1,145
Multiple Airlines
Tue 9/1Mon 11/2
ORD - USM • 2 stops
Cheapest one-way
$1,054
Multiple Airlines
Fri 5/22
ORD - USM • 3 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
Cheapest • from $1,325 (round-trip)
Best reviews • 8.5 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
Most punctual • 85% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Start a new search
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
Booking Insights
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

Tue, Sep 1 - Mon, Nov 2
Multiple Airlines Logo
9:10 pm - 10:30 am
ORD
-
USM
25h 20m
2 stops
Multiple Airlines Logo
10:00 am - 7:55 am
USM
-
ORD
34h 55m
2 stops
$1,145Multiple Airlines
Mon, Nov 2 - Fri, Nov 6
EVA Air Logo
11:30 pm - 6:55 pm
ORD
-
USM
30h 25m
2 stops
EVA Air Logo
10:00 am - 7:35 pm
USM
-
ORD
22h 35m
2 stops
$1,325EVA Air
Mon, Nov 2 - Fri, Nov 6
EVA Air Logo
11:30 pm - 5:00 pm
ORD
-
USM
28h 30m
2 stops
EVA Air Logo
7:00 am - 7:35 pm
USM
-
ORD
25h 35m
2 stops
$1,326EVA Air
Sun, Aug 30 - Tue, Sep 1
EVA Air Logo
12:30 am - 1:45 pm
ORD
-
USM
25h 15m
2 stops
EVA Air Logo
7:45 pm - 8:45 pm
USM
-
ORD
37h 00m
2 stops
$1,381EVA Air
Tue, Sep 1 - Mon, Nov 2
Multiple Airlines Logo
10:15 am - 7:30 am
ORD
-
USM
33h 15m
2 stops
Multiple Airlines Logo
5:05 pm - 2:41 pm
USM
-
ORD
34h 36m
3 stops
$1,468Multiple Airlines
Mon, Aug 10 - Tue, Aug 18
Qatar Airways Logo
7:20 pm - 4:55 pm
ORD
-
USM
33h 35m
2 stops
Qatar Airways Logo
1:30 pm - 3:05 pm
USM
-
ORD
37h 35m
2 stops
$1,549Qatar Airways
Tue, Sep 1 - Mon, Nov 2
Multiple Airlines Logo
4:00 pm - 7:40 pm
ORD
-
USM
39h 40m
1 stop
Multiple Airlines Logo
7:35 pm - 2:41 pm
USM
-
ORD
32h 06m
2 stops
$1,557Multiple Airlines
Sun, Aug 2 - Thu, Aug 13
Etihad Airways Logo
2:00 pm - 8:15 am
ORD
-
USM
30h 15m
2 stops
Etihad Airways Logo
4:25 pm - 8:35 am
USM
-
ORD
28h 10m
2 stops
$1,571Etihad Airways
Sun, Aug 30 - Tue, Sep 1
EVA Air Logo
12:30 am - 1:45 pm
ORD
-
USM
25h 15m
2 stops
EVA Air Logo
5:50 pm - 5:05 pm
USM
-
ORD
35h 15m
3 stops
$1,658EVA Air
Sun, Jun 21 - Mon, Jun 29
Etihad Airways Logo
2:00 pm - 7:10 am
ORD
-
USM
29h 10m
2 stops
Etihad Airways Logo
2:30 pm - 8:35 am
USM
-
ORD
30h 05m
2 stops
$1,692Etihad Airways
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.

Which airlines provide the cheapest flights from Chicago to Ko Samui?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Chicago to Ko Samui were found on EVA Air ($1,325) and Qatar Airways ($1,549).

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.

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.

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.

Good to know

Cheapest flight$1,054
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 services are available to economy passengers on EVA Air flights from Chicago to Koh Samui?

    EVA Air's in-flight entertainment system offers a wide selection of movies, TV shows, music, and games for economy-class passengers. The airline also serves complimentary meals and snacks on flights from Chicago to Koh Samui. Passengers can enjoy a range of Asian and Western meal options, as well as vegetarian and other special dietary meals.

  • What is the luggage allowance on American Airlines flights from Chicago to Koh Samui?

    For checked luggage, passengers are generally allowed to check up to 5 bags if they are traveling with a maximum size of 62 inches and a maximum weight of 50 pounds per bag on flights from Chicago to Koh Samui. For carry-on baggage, passengers are typically allowed to bring one carry-on bag and one personal item, with a maximum size of 22 inches high by 14 inches long by 9 inches wide.

  • What seat options are available on Bangkok Airways flights from Chicago to Koh Samui?

    Bangkok Airways offers several seat options for its flights from Chicago to Koh Samui. Passengers can select a preferred seat up to 1 hour before flight departure via the airline's call center, ticketing office, or counter check-in. There are various seating options, such as the most comfortable seats, creative seating options, and no-seat assignment options.

  • How do I get from Koh Samui Airport (USM) to the city center?

    One popular option to get from USM to the city center is to take a taxi or private transfer, which can cost around ฿400-500 ($12-15) and takes approximately 20-30 minutes. Another option is to use a shared minivan or shuttle, which can cost around ฿150 ($5) per person and takes approximately 30-45 minutes. Additionally, it is possible to rent a car at the airport and drive to the city center, with prices starting at around ฿770 ($22) per day.

  • 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 $1,054 for a one-way ticket and $1,145 for a round-trip.

  • 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.

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to Ko Samui

  • Flights from Chicago to Koh Samui have layovers in different cities depending on the airline. Some common layovers for this route include Taiwan (TPE), Bangkok (BKK), Phuket City (HKT), Istanbul (IST), Doha (DOH), and Abu Dhabi (AUH).
  • Thai Airways offers several services for people with reduced mobility on flights from Chicago to Koh Samui. The airline provides wheelchair services without any extra charge and allows passengers to travel with electronic wheelchairs or other mobility aids.
  • Chicago O'Hare International Airport (ORD) is a hub for both American Airlines and United Airlines. United Airlines has several lounges at ORD. These lounges include the United Polaris Lounge, which is located in Terminal 1 and in Concourse C right next to gate C18 inside of security.
  • Turkish Airlines allows small dogs, cats, and birds to travel in the cabin, as well as larger pets such as dogs, cats, and birds in the cargo hold of flights from Chicago to Koh Samui. For pets traveling in the cabin, the pet and its carrier must not exceed a combined weight of 17 lbs.
  • Cathay Pacific provides baby and child meals on board flights from Chicago to Koh Samui, as well as inflight entertainment for children. Children over the age of 2 can also become members of Cathay Pacific's loyalty program, which provides various benefits.

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.
8.5
EVA AirOverall score based on 1445 reviews
8.3Comfort
8.4Boarding
8.6Crew
8.1Food
8.0Entertainment
Airline reviews

Food tasted like the meat had freezer burn. Another thing all of our 4 check baggage was left somewhere and my oral medication for my diabetes was left in one of the lost luggage..most of the flight attendants did not know how to communicate in English.. the trip was a total nightmare

2.0 MediocreJoselito, May 2026
IAH - TPE
Read more EVA Air reviews

Food tasted like the meat had freezer burn. Another thing all of our 4 check baggage was left somewhere and my oral medication for my diabetes was left in one of the lost luggage..most of the flight attendants did not know how to communicate in English.. the trip was a total nightmare

I put the review all together for the first review

The crew need to be more friendly it seem everything such a rush situation during dinner and breakfast. Smiles to the passenger go such a long way just the service from Seattle to Taipei, service from Taipei to Bangkok were great more pleasant the flight attendant from Thailand she was very nice, as far as entertainment were amazing , wiffi connection was incredible great, I will be able to charged my phone from Seattle to Taipei and from taipei to Bangkok I won’t be able to do so flight attendant told me that because I don’t have the original iPhone charger connection has nothing to do what type of charger I have so she said there is nothing she can do about it. Foods : from Seattle to Taipei were ok no flavor , from Taipei to Bangkok I have chicken teriyaki the rice is overcooked all the flavor stuck on the aluminum wraps , breakfast the congee was on point and delicious. Will I recommend anyone to fly with Eva air go for it so you can experience yourself for myself I won’t fly with them again I’m gonna stick with Singapore airlines instead.

I liked that they gave us a couple of meals and drinks but the meal was not good and not many options especially if we are seated in the back of the plane.

Never went. Got rescheduled with Phillipine Airlines to Bali, which was fine.

I am really satisfied with Eva Air and will definitely fly with them again.

Again on this leg the WiFi wouldn't work. The seats were comfortable with adequate cushion and space between seats for my legs. Very nice 3-hour flight.

The flight from SEA to Taipei was on a Boeing 787-10. Economy seats were unacceptably cramped and the seats themselves were old and lacking cushion. I'm only 5'3" and couldn't cross my legs as my knees were up against the seat in front of me! I could not get WiFi to work most of the time on both flights and crew were invisible except to serve meals. The onboard entertainment also did not work reliably and was very hard to hear through the provided earbuds. The Asian vegetarian meals were interesting. I hope they can provide a fully vegan option though these meals seemed to be already. I appreciate their providing these meals options for vegans. I don't think I'll fly a 787-10 if I can help it. It was the definition of a sardine can in Economy.

My luggage was lost and didnt arrive in manila yesterday. And until now im still waiting for the confirmation if my luggage is teady for pick up in terminal 1

I always preferred EVA air every time I visit Philippines. It’s just this time that I have to be very early to make sure that I don’t miss my flight due to TSA problem. There’s only one choice of food serve which you use to have 2 on our flight from Taiwan to Philippines . Otherwise I will still use EVA air in my future flight.

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

Information on your arrival and departure airports