$224 Cheap Flights from Cheyenne (CYS) to Ontario (ONT)

View $224 flight on Thu, Nov 27, 2025Opens in a new window

Popular airlines from Cheyenne, WY (CYS-Cheyenne Regional) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Cheyenne to Ontario (CYS-ONT)

Prices were available within the past 7 days and start at $224 for one-way flights and $284 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Sep 13 - Tue, Sep 16
CYS
Cheyenne
ONT
Ontario
$284 Roundtrip, found 4 days ago
$284
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 13 from Cheyenne to Ontario, returning Tue, Sep 16, priced at $284 found 4 days ago
United
Sun, Nov 2 - Thu, Nov 13
CYS
Cheyenne
ONT
Ontario
$302 Roundtrip, found 6 days ago
$302
Roundtrip
found 6 days ago
Select United flight, departing Sun, Nov 2 from Cheyenne to Ontario, returning Thu, Nov 13, priced at $302 found 6 days ago
United
Wed, Oct 22 - Tue, Oct 28
CYS
Cheyenne
ONT
Ontario
$308 Roundtrip, found 8 hours ago
$308
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Oct 22 from Cheyenne to Ontario, returning Tue, Oct 28, priced at $308 found 8 hours ago
United
Sat, Oct 25 - Tue, Oct 28
CYS
Cheyenne
ONT
Ontario
$314 Roundtrip, found 8 hours ago
$314
Roundtrip
found 8 hours ago
Select United flight, departing Sat, Oct 25 from Cheyenne to Ontario, returning Tue, Oct 28, priced at $314 found 8 hours ago
United
Tue, Oct 21 - Wed, Oct 22
CYS
Cheyenne
ONT
Ontario
$336 Roundtrip, found 8 hours ago
$336
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Oct 21 from Cheyenne to Ontario, returning Wed, Oct 22, priced at $336 found 8 hours ago
United
Wed, Oct 22 - Sun, Nov 2
CYS
Cheyenne
ONT
Ontario
$342 Roundtrip, found 8 hours ago
$342
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Oct 22 from Cheyenne to Ontario, returning Sun, Nov 2, priced at $342 found 8 hours ago
United
Sat, Oct 25 - Sun, Nov 2
CYS
Cheyenne
ONT
Ontario
$348 Roundtrip, found 8 hours ago
$348
Roundtrip
found 8 hours ago
Select United flight, departing Sat, Oct 25 from Cheyenne to Ontario, returning Sun, Nov 2, priced at $348 found 8 hours ago
United
Sun, Nov 2 - Tue, Nov 11
CYS
Cheyenne
ONT
Ontario
$349 Roundtrip, found 6 days ago
$349
Roundtrip
found 6 days ago
Select United flight, departing Sun, Nov 2 from Cheyenne to Ontario, returning Tue, Nov 11, priced at $349 found 6 days ago
United
Tue, Oct 21 - Thu, Oct 23
CYS
Cheyenne
ONT
Ontario
$351 Roundtrip, found 8 hours ago
$351
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Oct 21 from Cheyenne to Ontario, returning Thu, Oct 23, priced at $351 found 8 hours ago
United
Sun, Sep 28 - Sun, Oct 12
CYS
Cheyenne
ONT
Ontario
$353 Roundtrip, found 1 day ago
$353
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 28 from Cheyenne to Ontario, returning Sun, Oct 12, priced at $353 found 1 day ago
Flights from Cheyenne (CYS) to Ontario (ONT)
Origin airport
Cheyenne Regional
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
United
Roundtrip price
$283
Distance
852 mi

Cheyenne to Ontario Flights

The cheapest times to fly from Cheyenne to Ontario

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 Cheyenne to Ontario are during the month of September. You can find some of the cheapest flights from Cheyenne to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Cheyenne to Ontario

Sunday is one of the best days to book for cheap flights from Cheyenne to Ontario: 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 Cheyenne to Ontario

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 Cheyenne to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $224 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 Cheyenne to Ontario 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 Cheyenne to Ontario 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.

 

Frequently asked questions

How much does a flight from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $224 or cheap return flight from $284 from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT) 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 Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT)?
Traveling in September may help you find better deals, as it's the cheapest month for flights between CYS and ONT. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT)?
To find the cheapest airline flying from CYS to ONT, 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 see the cheapest fares upfront.
How many flights per day from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT)?
You'll need to take a flight with a layover if you're traveling from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT). Direct flights don't operate daily on this route. However, just 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 CYS to ONT?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT)?
Book a flight from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**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 Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Waiting until right before your break to book a ticket from CYS to ONT often results in higher prices. While you may come across some last-minute deals, they're not always guaranteed. Be flexible with your travel plans for a better chance of scoring a bargain.
Is it cheaper to book a CYS to ONT flight and hotel package?
Booking a CYS to ONT flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our impressive range of stays and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Cheyenne Regional Airport (CYS) to Los Angeles - Ontario Intl. Airport (ONT)?
It's generally possible to cancel or reschedule your CYS to ONT flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.