$148 Cheap Frontier Airlines flights Cleveland (CLE) to Ontario (ONT)

View $148 flight on Mon, Jul 14, 2025Opens in a new window

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$148 Cheap Frontier Airlines flights Cleveland (CLE) to Ontario (ONT)

Prices were available within the past 7 days and start at $148 for one-way flights and $251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Jul 2 - Fri, Jul 4
CLE
Cleveland
ONT
Ontario
$251 Roundtrip, found 4 days ago
$251
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Jul 2 from Cleveland to Ontario, returning Fri, Jul 4, priced at $251 found 4 days ago
Frontier Airlines
Wed, Jun 25 - Mon, Aug 4
CLE
Cleveland
ONT
Ontario
$265 Roundtrip, found 6 days ago
$265
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, Jun 25 from Cleveland to Ontario, returning Mon, Aug 4, priced at $265 found 6 days ago
Frontier Airlines
Tue, Jul 8 - Wed, Jul 23
CLE
Cleveland
ONT
Ontario
$285 Roundtrip, found 4 days ago
$285
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Tue, Jul 8 from Cleveland to Ontario, returning Wed, Jul 23, priced at $285 found 4 days ago
Frontier Airlines
Tue, Jul 8 - Thu, Jul 17
CLE
Cleveland
ONT
Ontario
$290 Roundtrip, found 4 days ago
$290
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Tue, Jul 8 from Cleveland to Ontario, returning Thu, Jul 17, priced at $290 found 4 days ago
Frontier Airlines
Thu, Jul 10 - Tue, Jul 22
CLE
Cleveland
ONT
Ontario
$296 Roundtrip, found 4 days ago
$296
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Jul 10 from Cleveland to Ontario, returning Tue, Jul 22, priced at $296 found 4 days ago
Frontier Airlines
Sat, Oct 18 - Tue, Oct 28
CLE
Cleveland
ONT
Ontario
$312 Roundtrip, found 1 day ago
$312
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Oct 18 from Cleveland to Ontario, returning Tue, Oct 28, priced at $312 found 1 day ago
Flights from Cleveland (CLE) to Ontario (ONT)
Origin airport
Hopkins Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, United
Popular airline
American Airlines
Distance
2002 mi

Frequently asked questions

How much is a Frontier Airlines flight from Hopkins Intl. Airport (CLE) to Los Angeles - Ontario Intl. Airport (ONT)?
You'll find affordable round-trip Frontier Airlines flights from $251 from CLE to ONT by filtering your results from "Price (lowest to highest)" on Expedia. Or search for options from $148 for a one-way trip.**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 CLE to ONT with Frontier Airlines?
Frontier Airlines flights to Ontario are generally more affordable in the off-peak months of January and April. Whether you're searching for a one-way or round-trip ticket, you could score a better deal then.
What is the cheapest time to book flights from Hopkins Intl. Airport (CLE) to Los Angeles - Ontario Intl. Airport (ONT) with Frontier Airlines?
Start searching one to three months ahead of your departure date to score cheaper fares on Frontier Airlines flights from Hopkins Intl. Airport (CLE) to Los Angeles - Ontario Intl. Airport (ONT). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic journeys.*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 Frontier Airlines fly nonstop from Hopkins Intl. Airport (CLE) to Los Angeles - Ontario Intl. Airport (ONT)?
Use our "Nonstop" filter when browsing for direct Frontier Airlines flights from CLE to ONT. It's also a good way to compare other airlines servicing the same direct route.
What is the earliest Frontier Airlines flight from CLE to ONT?
Browse Frontier Airlines's earliest flights from CLE to ONT by checking the "Early Morning" and "Morning" filters. Not only will you arrive at your destination sooner, early departures also experience 20% fewer 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 Frontier Airlines fly into in Ontario?
Los Angeles - Ontario Intl. Airport (ONT) is the main Ontario hub for Frontier Airlines flights from Hopkins Intl. Airport (CLE).
Why fly with Frontier Airlines from CLE to ONT?
A rewarding loyalty program and the chance to rack up points through Frontier Miles are the start of the reasons to travel from CLE to ONT with Frontier Airlines. Plus, when you sign up to Expedia's free One Key™ program, you can earn OneKeyCash™* on top of Frontier Airlines's loyalty program earnings. It's yours to use wherever your next trip takes you.*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 Frontier Airlines flight from Hopkins Intl. Airport (CLE) to Los Angeles - Ontario Intl. Airport (ONT)?
Depending on the type of ticket you purchased, a fee generally applies if you modify or cancel your flight more than 24 hours after it's been confirmed. To secure flexible fares, select our "No cancel fee" or "Changes included" filter when you look for flights. To learn more about modifying or canceling your reservation, visit "Trips," select your flight and tick "Manage Booking."

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