£79 Cheap Flights from Ontario (ONT) to Miami (MIA)

View £79 flight on Tue, 11 Aug 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Miami International Airport (MIA)

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

Prices were available within the past 7 days and start at £79 for one-way flights and £242 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 20 Oct - Tue, 3 Nov
ONT
Ontario
MIA
Miami
£242 Return, found 5 days ago
£242
Return
found 5 days ago
Select Delta flight, departing Tue, 20 Oct from Ontario to Miami, returning Tue, 3 Nov, priced at £242 found 5 days ago
Delta
Sat, 9 May - Wed, 13 May
ONT
Ontario
MIA
Miami
£243 Return, found 2 days ago
£243
Return
found 2 days ago
Select Delta flight, departing Sat, 9 May from Ontario to Miami, returning Wed, 13 May, priced at £243 found 2 days ago
Delta
Tue, 20 Oct - Fri, 30 Oct
ONT
Ontario
MIA
Miami
£252 Return, found 5 days ago
£252
Return
found 5 days ago
Select Delta flight, departing Tue, 20 Oct from Ontario to Miami, returning Fri, 30 Oct, priced at £252 found 5 days ago
Delta
Sat, 31 Oct - Sat, 14 Nov
ONT
Ontario
MIA
Miami
£263 Return, found 5 days ago
£263
Return
found 5 days ago
Select Delta flight, departing Sat, 31 Oct from Ontario to Miami, returning Sat, 14 Nov, priced at £263 found 5 days ago
Delta
Sun, 30 Aug - Tue, 15 Sept
ONT
Ontario
MIA
Miami
£268 Return, found 5 days ago
£268
Return
found 5 days ago
Select Delta flight, departing Sun, 30 Aug from Ontario to Miami, returning Tue, 15 Sept, priced at £268 found 5 days ago
Delta
Wed, 3 Jun - Wed, 17 Jun
ONT
Ontario
MIA
Miami
£269 Return, found 17 hours ago
£269
Return
found 17 hours ago
Select Delta flight, departing Wed, 3 Jun from Ontario to Miami, returning Wed, 17 Jun, priced at £269 found 17 hours ago
Delta
Fri, 6 Nov - Thu, 26 Nov
ONT
Ontario
MIA
Miami
£279 Return, found 5 days ago
£279
Return
found 5 days ago
Select Delta flight, departing Fri, 6 Nov from Ontario to Miami, returning Thu, 26 Nov, priced at £279 found 5 days ago
American Airlines
Thu, 7 May - Thu, 14 May
ONT
Ontario
MIA
Miami
£293 Return, found 2 days ago
£293
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from Ontario to Miami, returning Thu, 14 May, priced at £293 found 2 days ago
United
Wed, 8 Jul - Tue, 28 Jul
ONT
Ontario
MIA
Miami
£322 Return, found 5 days ago
£322
Return
found 5 days ago
Select United flight, departing Wed, 8 Jul from Ontario to Miami, returning Tue, 28 Jul, priced at £322 found 5 days ago
Alaska Airlines
Thu, 14 May - Fri, 22 May
ONT
Ontario
MIA
Miami
£9,159 Return, found 4 days ago
£9,159
Return
found 4 days ago
Select Alaska Airlines flight, departing Thu, 14 May from Ontario to Miami, returning Fri, 22 May, priced at £9,159 found 4 days ago

Alternative airports near Miami

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

Select flight to Miami Intl. MIA. Cheapest option available. Average driving time to city centre is 12 minutes. Flights from £243
MIA
Miami Intl.
Cheapest
Average driving time to city centre12 min
Flights from £243

Find the cheapest month to fly from Ontario (ONT) to Miami (MIA)

May is typically the cheapest month to fly

From £121 - £229 per traveller.

Frequently asked questions

How much is a flight from Los Angeles - Ontario Intl. Airport (ONT) to MIA?
The lowest price advertised for a round-trip flight from ONT to Miami Intl. Airport (MIA) is £242. But you better act fast. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to Miami Intl. Airport (MIA)?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Ontario Airport to Miami Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ONT to Miami Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from ONT to MIA?
It's around 3,700 kilometres from ONT to MIA, so expect to be strapped into your seat for a while. Keep yourself occupied with things like your e-reader or a good old-fashioned book.
Which airlines fly direct from Ontario Airport to Miami Intl. Airport (MIA)?
Direct flights aren't available, so you'll need to make at least one stop between Ontario Airport and Miami Intl. Airport (MIA). Take advantage of the layover time to stretch your legs and enjoy some personal space.
Are Ontario Airport to Miami Intl. Airport (MIA) flight tickets cheaper when they're purchased at the last minute?
Flight prices from ONT to MIA are available up to a year before departure on Expedia. And although you may occasionally score fantastic last-minute deals, it's never something you can count on. Also, booking your flights ahead of time means you'll have more options — and you can avoid getting trapped in the dreaded middle seat! We regularly update our fares to bring you the best bargains, so keep checking in for all the latest specials.

Frequently asked questions

What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
September is typically the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.), with average return fares of approximately £270. This is about 15% lower than the average price throughout the year. September often sees lower prices as the summer travel rush ends and before the holiday season begins, leading to reduced demand. Other cheap months to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) include January and August.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
The best time to fly from Ontario International Airport (ONT) to Miami International Airport (MIA) for good value is typically in September or August. Based on booking data from the past year, you can expect to find return flights for around £270 during these months. While these might not be the absolute busiest travel times, they offer a great balance of lower prices, meaning you can save on your trip while still finding convenient flight options.
How many flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
There are approximately 57 connecting flights per day from Ontario International Airport (ONT) to Miami International Airport (MIA). Some common connection points include Sky Harbor International (PHX), Seattle - Tacoma International (SEA), and Denver International (DEN).
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
The earliest flight from Los Angeles - Ontario Intl. (ONT) to Miami Intl. (MIA) typically departs at approximately 12:55 AM local time, operated by American Airlines. This is a seasonal service active in September and October. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
You'll find the most flights from Los Angeles - Ontario Intl. (ONT) to Miami Intl. (MIA) on a Friday, with around 42 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Southwest Airlines, and Alaska Airlines. Fridays offer notably more flight options compared to other days of the week.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
The most popular departure times for flights from Los Angeles - Ontario Intl. (ONT) to Miami Intl. (MIA) are in the early morning, from 6am to 9am. Approximately 33% of passengers prefer this time window. Many major carriers, including American Airlines, United Airlines and Southwest Airlines, offer flights during this window. These times work well because you can get an early start to your travel day and arrive at your destination with plenty of time.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
Flying from ONT to MIA with a connection usually takes about 6 hours 50 minutes, traveling roughly 2,293 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
Select the "Business class" and "First class" filters when looking for ONT to MIA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Miami from Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly directly into Miami Intl. (MIA) to reach Miami. Some flights may connect through major hubs like Denver Intl. (DEN), San Francisco Intl. (SFO), Portland Intl. (PDX) before reaching Miami. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Miami, FL (MIA-Miami Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Miami Intl.
Return price
£241
Distance
3667 km

Book with confidence

Compare flights from Ontario to Miami easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Ontario to Miami. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Miami Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Los Angeles - Ontario Intl. to Miami Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Los Angeles - Ontario Intl. (ONT) to Miami Intl. (MIA)

The easiest way to view the best deals on flights from Ontario to Miami today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Los Angeles - Ontario Intl. to Miami Intl. start at just £242 and range up to £9,159.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Ontario and Miami
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Ontario to Miami flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Los Angeles - Ontario Intl. to Miami Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Ontario to Miami easily and book with confidence

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