$173 Cheap Flights from Champaign (CMI) to Las Vegas (LAS)

View $173 flight on Mon, Nov 3, 2025Opens in a new window

Popular airlines from Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard) to Harry Reid Intl. Airport (LAS)

  • 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

Cheap Flights from Champaign to Las Vegas (CMI-LAS)

Prices were available within the past 7 days and start at $173 for one-way flights and $346 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Dec 12 - Tue, Dec 16
CMI
Champaign
LAS
Las Vegas
$346 Roundtrip, found 7 hours ago
$346
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Fri, Dec 12 from Champaign to Las Vegas, returning Tue, Dec 16, priced at $346 found 7 hours ago
American Airlines
Sat, Jan 31 - Sun, Feb 1
CMI
Champaign
LAS
Las Vegas
$397 Roundtrip, found 2 hours ago
$397
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 31 from Champaign to Las Vegas, returning Sun, Feb 1, priced at $397 found 2 hours ago
American Airlines
Fri, Jan 23 - Sun, Jan 25
CMI
Champaign
LAS
Las Vegas
$403 Roundtrip, found 4 days ago
$403
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Jan 23 from Champaign to Las Vegas, returning Sun, Jan 25, priced at $403 found 4 days ago
American Airlines
Sat, Oct 25 - Sat, Nov 1
CMI
Champaign
LAS
Las Vegas
$407 Roundtrip, found 14 hours ago
$407
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Oct 25 from Champaign to Las Vegas, returning Sat, Nov 1, priced at $407 found 14 hours ago
American Airlines
Sat, Oct 25 - Sat, Nov 1
CMI
Champaign
LAS
Las Vegas
$422 Roundtrip, found 14 hours ago
$422
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Oct 25 from Champaign to Las Vegas, returning Sat, Nov 1, priced at $422 found 14 hours ago
American Airlines
Mon, Dec 8 - Fri, Dec 12
CMI
Champaign
LAS
Las Vegas
$426 Roundtrip, found 5 hours ago
$426
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Mon, Dec 8 from Champaign to Las Vegas, returning Fri, Dec 12, priced at $426 found 5 hours ago
American Airlines
Wed, Jan 28 - Fri, Feb 6
CMI
Champaign
LAS
Las Vegas
$432 Roundtrip, found 2 hours ago
$432
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Jan 28 from Champaign to Las Vegas, returning Fri, Feb 6, priced at $432 found 2 hours ago
American Airlines
Thu, Dec 11 - Thu, Dec 18
CMI
Champaign
LAS
Las Vegas
$437 Roundtrip, found 7 hours ago
$437
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, Dec 11 from Champaign to Las Vegas, returning Thu, Dec 18, priced at $437 found 7 hours ago
American Airlines
Fri, Jan 2 - Sat, Jan 3
CMI
Champaign
LAS
Las Vegas
$437 Roundtrip, found 1 day ago
$437
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jan 2 from Champaign to Las Vegas, returning Sat, Jan 3, priced at $437 found 1 day ago
American Airlines
Mon, Oct 20 - Thu, Oct 23
CMI
Champaign
LAS
Las Vegas
$446 Roundtrip, found 2 days ago
$446
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Oct 20 from Champaign to Las Vegas, returning Thu, Oct 23, priced at $446 found 2 days ago

Find the cheapest month to fly from Champaign (CMI) to Las Vegas (LAS)

February is typically the cheapest month to fly

From $226 - $668 per traveler.

Alternative airports near Las Vegas

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to McCarran Intl. LAS. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $523
LAS
McCarran Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $523

Frequently asked questions

How much does a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS) cost?
Lock in a cheap one-way flight from $173 or cheap return flight from $346 from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS)?
December is the most affordable month to fly from CMI to LAS. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS)?
To find the cheapest airline flying from CMI to LAS, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS)?
You'll have to book a flight with a layover if you're traveling from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from CMI to LAS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a range of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS)?
To land at Harry Reid Intl. Airport (LAS) on time, choose a flight that leaves from University Of Illinois Urbana-Champaign Williard Airport (CMI) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS) last-minute?
Booking your flight from CMI to LAS right before your getaway is usually more expensive. But if there's some wiggle room with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a CMI to LAS flight and hotel package?
You'll generally save money by booking a CMI to LAS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After selecting your preferred flights and accommodations, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Harry Reid Intl. Airport (LAS)?
Usually, it's possible to reschedule or cancel your CMI to LAS flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
University Of Illinois Urbana-Champaign Williard
Destination airport
Harry Reid Intl.
Airlines serving
American Airlines
Roundtrip price
$346
Distance
1481 mi

Book with confidence

Book with confidence

Champaign to Las Vegas Flights

The cheapest times to fly from Champaign to Las Vegas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Champaign to Las Vegas are during the month of December. You can find some of the cheapest flights from Champaign to Las Vegas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Champaign to Las Vegas

Sunday is one of the best days to book for cheap flights from Champaign to Las Vegas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Champaign to Las Vegas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Champaign to Las Vegas in 2025. You can also book with separate airlines for your outbound and return journeys, from $173 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Champaign to Las Vegas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Champaign to Las Vegas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Champaign to Las Vegas Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.