$94 Cheap Flights from Miami (MIA) to Ontario (ONT)

View $94 flight on Wed, Apr 30, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Miami to Ontario (MIA-ONT)

Prices were available within the past 7 days and start at $94 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 24 - Wed, May 28
MIA
Miami
ONT
Ontario
$188 Roundtrip, found 5 hours ago
$188
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, May 24 from Miami to Ontario, returning Wed, May 28, priced at $188 found 5 hours ago
Frontier Airlines
Thu, May 15 - Wed, May 28
MIA
Miami
ONT
Ontario
$198 Roundtrip, found 1 day ago
$198
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, May 15 from Miami to Ontario, returning Wed, May 28, priced at $198 found 1 day ago
Frontier Airlines
Fri, May 9 - Sun, May 11
MIA
Miami
ONT
Ontario
$208 Roundtrip, found 1 hour ago
$208
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, May 9 from Miami to Ontario, returning Sun, May 11, priced at $208 found 1 hour ago
Frontier Airlines
Sun, May 18 - Wed, May 28
MIA
Miami
ONT
Ontario
$218 Roundtrip, found 5 hours ago
$218
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sun, May 18 from Miami to Ontario, returning Wed, May 28, priced at $218 found 5 hours ago
Frontier Airlines
Thu, May 8 - Thu, May 15
MIA
Miami
ONT
Ontario
$228 Roundtrip, just found
$228
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, May 8 from Miami to Ontario, returning Thu, May 15, priced at $228 just found
Frontier Airlines
Sun, May 11 - Sat, May 24
MIA
Miami
ONT
Ontario
$238 Roundtrip, found 10 hours ago
$238
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Sun, May 11 from Miami to Ontario, returning Sat, May 24, priced at $238 found 10 hours ago
United
Wed, May 28 - Wed, Jun 4
MIA
Miami
ONT
Ontario
$239 Roundtrip, found 1 day ago
$239
Roundtrip
found 1 day ago
Select United flight, departing Wed, May 28 from Miami to Ontario, returning Wed, Jun 4, priced at $239 found 1 day ago
American Airlines
Wed, May 21 - Sat, May 24
MIA
Miami
ONT
Ontario
$244 Roundtrip, found 7 hours ago
$244
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Wed, May 21 from Miami to Ontario, returning Sat, May 24, priced at $244 found 7 hours ago
Delta
Thu, May 15 - Sun, May 18
MIA
Miami
ONT
Ontario
$254 Roundtrip, found 4 hours ago
$254
Roundtrip
found 4 hours ago
Select Delta flight, departing Thu, May 15 from Miami to Ontario, returning Sun, May 18, priced at $254 found 4 hours ago
Southwest Airlines
Wed, Aug 27 - Tue, Sep 2
MIA
Miami
ONT
Ontario
$299 Roundtrip, found 8 hours ago
$299
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Wed, Aug 27 from Miami to Ontario, returning Tue, Sep 2, priced at $299 found 8 hours ago

Frequently asked questions

How much does a flight from Miami Intl. Airport (MIA) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Discover the latest flight deals from MIA to ONT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from MIA to ONT?
The cheapest flights from MIA to ONT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from MIA to ONT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from MIA to ONT. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Miami Intl. Airport (MIA) to Los Angeles - Ontario Intl. Airport (ONT)?
Nonstop flights from Miami Intl. Airport (MIA) to Los Angeles - Ontario Intl. Airport (ONT) aren’t available daily, so you’ll have to take a flight with a layover. Explore your options with Expedia’s filters. Enter your dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from MIA 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 various factors, including 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 Miami Intl. Airport (MIA) to Los Angeles - Ontario Intl. Airport (ONT)?
Opt for a flight from Miami Intl. Airport (MIA) to Los Angeles - Ontario Intl. Airport (ONT) that leaves before 3 PM to reduce the risk of delays and cancellations. Later departures 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.
What airports do you fly into for Ontario from Miami Intl. Airport (MIA)?
Los Angeles Intl. Airport (LAX) is the only airport in Ontario with direct flights from Miami Intl. Airport (MIA). Browse your options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Miami Intl. Airport (MIA) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Waiting until just before your trip to book a flight from MIA to ONT often results in higher prices. While it’s possible to find some last-minute deals, they’re not always guaranteed. Allow some flexibility in your schedule for the best chance of landing a bargain.
Is it cheaper to book a MIA to ONT flight and hotel package?
Securing a MIA to ONT flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Miami Intl. Airport (MIA) to Los Angeles - Ontario Intl. Airport (ONT)?
Usually, it’s possible to reschedule or cancel your MIA to ONT flight. However, if it’s been more than 24 hours since booking, additional charges may apply. Refer to 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.
*Available to One Key members.