$134 Cheap Frontier Airlines flights Orlando (MCO) to Ontario (ONT)

View $134 flight on Sat, Aug 16, 2025Opens in a new window

$134 Cheap Frontier Airlines flights Orlando (MCO) to Ontario (ONT)

Prices were available within the past 7 days and start at $134 for one-way flights and $263 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Aug 16 - Sat, Aug 23
MCO
Orlando
ONT
Ontario
$263 Roundtrip, just found
$263
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 16 from Orlando to Ontario, returning Sat, Aug 23, priced at $263 just found
Frontier Airlines
Tue, Aug 5 - Wed, Aug 6
MCO
Orlando
ONT
Ontario
$268 Roundtrip, found 2 hours ago
$268
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Tue, Aug 5 from Orlando to Ontario, returning Wed, Aug 6, priced at $268 found 2 hours ago
Frontier Airlines
Tue, Aug 26 - Sun, Aug 31
MCO
Orlando
ONT
Ontario
$273 Roundtrip, just found
$273
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Aug 26 from Orlando to Ontario, returning Sun, Aug 31, priced at $273 just found
Frontier Airlines
Fri, Aug 8 - Sat, Aug 9
MCO
Orlando
ONT
Ontario
$278 Roundtrip, found 2 hours ago
$278
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Fri, Aug 8 from Orlando to Ontario, returning Sat, Aug 9, priced at $278 found 2 hours ago
Frontier Airlines
Mon, Sep 8 - Thu, Sep 11
MCO
Orlando
ONT
Ontario
$283 Roundtrip, just found
$283
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Sep 8 from Orlando to Ontario, returning Thu, Sep 11, priced at $283 just found
Frontier Airlines
Wed, Sep 3 - Wed, Sep 10
MCO
Orlando
ONT
Ontario
$293 Roundtrip, found 5 days ago
$293
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Sep 3 from Orlando to Ontario, returning Wed, Sep 10, priced at $293 found 5 days ago
Flights from Orlando (MCO) to Ontario (ONT)
Origin airport
Orlando 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
2166 mi
Average flight time
7 hours 35 mins

Frequently asked questions

How much is a Frontier Airlines flight from Orlando Intl. Airport (MCO) to Los Angeles - Ontario Intl. Airport (ONT)?
You can discover cheap return Frontier Airlines flights from $263 from MCO to ONT by organizing your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $134 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 MCO to ONT with Frontier Airlines?
Look for return or one-way flights to Ontario in January or April. You could find a cheap fare with Frontier Airlines during these off-peak travel months.
What is the cheapest time to book flights from Orlando Intl. Airport (MCO) to Los Angeles - Ontario Intl. Airport (ONT) with Frontier Airlines?
For cheap Frontier Airlines fares from Orlando Intl. Airport (MCO) to Los Angeles - Ontario Intl. Airport (ONT), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact how much you pay. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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 Orlando Intl. Airport (MCO) to Los Angeles - Ontario Intl. Airport (ONT)?
Simply enter your dates, press search and tick the "Nonstop" filter on Expedia to browse any direct flights from MCO to ONT with Frontier Airlines or other carriers.
What is the earliest Frontier Airlines flight from MCO to ONT?
To find the earliest departure from MCO to ONT with Frontier Airlines, sort your results by "Morning" and "Early Morning." Choosing an early flight usually means cancellations are less likely.**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?
Frontier Airlines flights from Orlando Intl. Airport (MCO) to Ontario touch down at Los Angeles - Ontario Intl. Airport (ONT). This is the main gateway to this city.
Why fly with Frontier Airlines from MCO to ONT?
A rewarding loyalty program and the ability to rack up points through Frontier Miles are the start of the reasons to leave from MCO to ONT with Frontier Airlines. Plus, when you join our One Key™ program, you can receive OneKeyCash™* alongside any airline loyalty program earnings. It's yours to spend on your next adventure.*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 Orlando Intl. Airport (MCO) to Los Angeles - Ontario Intl. Airport (ONT)?
It's generally possible to change or cancel your flight, although additional charges may apply if you booked more than 24 hours ago. Need to keep your options open? Use Expedia's "No cancel fee" and "Changes included" filters to find flights that won't penalize you if you need to adjust your plans. To update your itinerary, visit "Trips," select your flight and click on "Manage Booking" for more details.

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*Available to One Key members.