ORD - USM

$488 Find Cheap Flights from Chicago to Ko Samui - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$862
Typical prices: $1,153-$1,619
Cathay Pacific
Sat 11/24Sat 12/8
ORD - USM • 1 stop
Cheapest one-way
$488
Typical prices: $542-$728
Multiple Airlines
Thu 2/15
ORD - USM • 2 stops
When to travel
April
Cheapest • 24% price drop
July
Most popular
Good to know
+1
Good to know
+1
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We hope you love your trip to Ko Samui!
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Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Ko Samui

Mon, Nov 2 - Mon, Nov 16
Cathay Pacific Logo
2:10 pm - 7:35 pmORD  Chicago O'Hare Intl-USM Ko Samui
40h 25m1 stop Hong Kong Intl
Cathay Pacific Logo
11:40 am - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
37h 50m1 stop Hong Kong Intl
$864Cathay Pacific
Wed, Feb 24 - Sat, Mar 6
Multiple Airlines Logo
2:10 pm - 7:10 amORD  Chicago O'Hare Intl-USM Ko Samui
28h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
9:30 pm - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
28h 00m2 stops Bangkok Suvarnabhumi Hong Kong Intl
$872Multiple Airlines
Mon, Nov 2 - Mon, Nov 16
Multiple Airlines Logo
2:10 pm - 7:10 amORD  Chicago O'Hare Intl-USM Ko Samui
28h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
9:10 pm - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
28h 20m2 stops Bangkok Suvarnabhumi Hong Kong Intl
$873Multiple Airlines
Wed, Feb 24 - Sat, Mar 6
Multiple Airlines Logo
2:10 pm - 7:35 pmORD  Chicago O'Hare Intl-USM Ko Samui
40h 25m1 stop Hong Kong Intl
Multiple Airlines Logo
9:30 pm - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
28h 00m2 stops Bangkok Suvarnabhumi Hong Kong Intl
$874Multiple Airlines
Mon, Nov 2 - Mon, Nov 16
Multiple Airlines Logo
2:10 pm - 7:10 amORD  Chicago O'Hare Intl-USM Ko Samui
28h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
11:40 am - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
37h 50m1 stop Hong Kong Intl
$874Multiple Airlines
Wed, Nov 4 - Wed, Nov 11
Multiple Airlines Logo
2:10 pm - 7:35 pmORD  Chicago O'Hare Intl-USM Ko Samui
40h 25m1 stop Hong Kong Intl
Multiple Airlines Logo
7:10 pm - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
30h 20m2 stops Bangkok Suvarnabhumi Hong Kong Intl
$875Multiple Airlines
Mon, Feb 15 - Mon, Mar 8
Multiple Airlines Logo
2:10 pm - 7:35 pmORD  Chicago O'Hare Intl-USM Ko Samui
40h 25m1 stop Hong Kong Intl
Multiple Airlines Logo
8:40 am - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
40h 50m2 stops Bangkok Suvarnabhumi Hong Kong Intl
$882Multiple Airlines
Tue, Nov 24 - Tue, Dec 8
Multiple Airlines Logo
2:10 pm - 7:35 pmORD  Chicago O'Hare Intl-USM Ko Samui
40h 25m1 stop Hong Kong Intl
Multiple Airlines Logo
1:45 pm - 12:30 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
35h 45m2 stops Bangkok Suvarnabhumi Hong Kong Intl
$893Multiple Airlines
Mon, Mar 8 - Tue, Mar 30
EVA Air Logo
11:30 pm - 2:55 pmORD  Chicago O'Hare Intl-USM Ko Samui
26h 25m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
8:45 am - 9:00 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
24h 15m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,117EVA Air
Tue, Mar 9 - Tue, Mar 30
EVA Air Logo
11:30 pm - 2:55 pmORD  Chicago O'Hare Intl-USM Ko Samui
26h 25m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
9:15 am - 9:00 pmUSM  Ko Samui-ORD Chicago O'Hare Intl
23h 45m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,117EVA Air
Booking Insights

Price, demand and travel trends for Chicago O'Hare Intl Airport to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Chicago O'Hare Intl Airport to Ko Samui with more confidence.

How much is a round-trip flight from Chicago O'Hare Intl Airport to Ko Samui?

Round-trip flights from Chicago O'Hare Intl Airport to Ko Samui start at $862. Prices are below average for this route right now, with typical round-trip fares ranging from $1,153 to $1,619. The lowest price found in the past 5 days was $862 on Cathay Pacific.

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Expert advice

Expert advice for your flight from Chicago to Ko Samui

 
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

Key details for Chicago O'Hare Intl Airport to Ko Samui flights

Low season

September

Cheapest flight

$488
Most popular time to fly with an average 5% increase in price.
Flight from Chicago O'Hare Intl Airport 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

Your Chicago O'Hare Intl Airport to Ko Samui flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • What cabin classes can I book on flights from Chicago O'Hare Intl Airport to Ko Samui?

    Two cabin classes are available on flights from Chicago O'Hare Intl Airport to Ko Samui:

    • Economy Class
    • Premium Economy Class

  • Do I need a passport to fly from Chicago O'Hare Intl Airport to Ko Samui?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Chicago O'Hare Intl Airport to Ko Samui flight?

    Round-trip flights from Chicago O'Hare Intl Airport to Ko Samui range from $1,153 to $1,619, with an average of $1,443 over the past 12 months. Anything below $1,153 counts as a good deal.

  • How are flight prices from Chicago O'Hare Intl Airport to Ko Samui looking right now?

    One-way fares from Chicago O'Hare Intl Airport to Ko Samui are currently higher than usual. Average one-way flight prices are about $632, which is 14% above the typical average for this route.

  • What car rental options are available at Ko Samui Airport (USM)?

    Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:
    • Drive Car Rental
    • Alamo
    • Sixt
    • Enterprise Rent-A-Car
    • Hertz

  • Which airports can I use when flying from Chicago O'Hare Intl Airport to Ko Samui?

    Flights from Chicago O'Hare Intl Airport to Ko Samui usually depart from Chicago O'Hare Intl (ORD) and arrive at Ko Samui (USM).

  • Which airports do connecting flights from Chicago O'Hare Intl Airport to Ko Samui pass through?

    Most connecting flights from Chicago O'Hare Intl Airport to Ko Samui pass through Hong Kong Intl (HKG), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

  • Can I save money by using flexible dates for flights from Chicago O'Hare Intl Airport to Ko Samui?

    Yes. Being flexible with your travel dates can save you up to 32% on the Chicago O'Hare Intl Airport to Ko Samui route. Wednesday is the cheapest departure day at $1,112 round-trip on average, while Tuesday is the most expensive at $1,619, a difference of $507. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between Chicago O'Hare Intl Airport and Ko Samui?

    Ko Samui is 12 hours ahead of Chicago O'Hare Intl Airport (Indochina Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ko Samui?

    Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Fishermans Village. These are among the most viewed places in Ko Samui on KAYAK.

  • 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.

Your guide to booking Chicago O'Hare Intl Airport to Ko Samui flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Tuesday. On this route, Wednesday flights average $1,112 - about $507 less than Tuesday (31% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Chicago O'Hare Intl Airport to Ko Samui trip for April. Fares historically average $1,100 round-trip in that month - typically $988 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.
    - Ozo Chaweng Samui - Sha Extra Plus
    - Melia Koh Samui
    - Cosi Samui Chaweng Beach
  • 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.

More options for your flight from Chicago to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car rental

Car rentals in Ko Samui
Hotels in Ko Samui
Vacations in Ko Samui