$658 Cheap EVA Airways flights Chicago (ORD) to Samui Intl. Airport (USM)

View $658 flight on Mon, Oct 20, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$658 Cheap EVA Airways flights Chicago (ORD) to Samui Intl. Airport (USM)

Prices were available within the past 7 days and start at $658 for one-way flights and $1,155 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

EVA Airways
Mon, Oct 20 - Mon, Oct 27
ORD
Chicago
USM
Koh Samui
$1,155 Roundtrip, just found
$1,155
Roundtrip
just found
Select EVA Airways flight, departing Mon, Oct 20 from Chicago to Koh Samui, returning Mon, Oct 27, priced at $1,155 just found
Flights from Chicago (ORD) to Samui Intl. Airport (USM)
Origin airport
O'Hare Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Air France, Austrian Airlines, British Airways, Cathay Pacific, EVA Airways, Etihad Airways, Japan Airlines, KLM, Qatar Airways, Swiss International Air Lines, Turkish Airlines
Popular airline
EVA Airways
Distance
8840 mi

Frequently asked questions

How much is an EVA Air flight from O'Hare Intl. Airport (ORD) to Ko Samui Airport (USM)?
You'll find cheap return EVA Air flights from $1,155 from ORD to USM by organizing your results from "Price (lowest to highest)" on Expedia. Or look for options from $658 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from ORD to USM with EVA Air?
EVA Air flights to Koh Samui are generally cheaper in the off-peak months of October and September. Whether you're after a one-way or round-trip ticket, you could find a better deal then.
What is the cheapest time to book flights from O'Hare Intl. Airport (ORD) to Ko Samui Airport (USM) with EVA Air?
Start your search for EVA Air flights from ORD to USM about one month before you want to go. The cheapest time to reserve an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. Regardless of fare class or itinerary, the best day to book international airfare is usually Sunday. Friday can be the most expensive. Travelers who book on a Sunday can save an average of 17% compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does EVA Air fly nonstop from O'Hare Intl. Airport (ORD) to Ko Samui Airport (USM)?
Fill in your dates, hit search and check the "Nonstop" filter on Expedia to browse any direct flights from ORD to USM with EVA Air or other carriers.
What is the earliest EVA Air flight from ORD to USM?
Sort your results by "Early Morning" and "Morning" to browse the earliest departures from ORD to USM. Setting off early means you're 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does EVA Air fly into in Koh Samui?
EVA Air flights from O'Hare Intl. Airport (ORD) to Koh Samui touch down at Ko Samui Airport (USM). This is the main entry point here.
What kind of luggage can I take on an EVA Air flight from O'Hare Intl. Airport (ORD) to Ko Samui Airport (USM)?
EVA Air allows passengers to bring 1 checked-in bag weighing up to 44 lb with dimensions not exceeding 62 inches on standard economy flights from ORD to USM. Additionally, you can bring 1 cabin bag with you in the cabin. This hand luggage must not exceed 45 inches and weigh less than 15 lb. Baggage allowances can differ based on your cabin class and fare type, so double-check your booking or EVA Air's website to avoid paying unexpected fees at the airport.
Why fly with EVA Air from ORD to USM?
Flying from ORD to USM with EVA Air means enjoying a host of perks, including top-tier customer service and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That's on top of the EVA Air Infinity MileageLands points you can earn with EVA Air.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my EVA Air flight from O'Hare Intl. Airport (ORD) to Ko Samui Airport (USM)?
Changes are often free within 24 hours of making your booking, but your airline may add a charge after that. For more information about modifying your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to change your itinerary without being charged, check the "No cancel fee" or "Changes included" filter when organizing your next escape.

Explore a world of travel with Expedia

*Available to One Key members.