ONT - MIA

$85 Find Cheap Flights from Ontario to Miami

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Miami departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Miami.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Miami.
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Flights Deals

Cheap Flight Deals from Ontario to Miami (ONT-MIA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Miami that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Ontario to Miami

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Miami.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
6:25 am - 5:43 amONT-MIA
20h 18m1 stop
 Logo
8:55 pm - 11:44 amMIA-ONT
17h 49m1 stop
Tue, May 27 - Tue, Jun 3
Frontier Logo
5:15 pm - 5:40 amONT-MIA
9h 25m1 stop
Frontier Logo
7:10 am - 4:20 pmMIA-ONT
12h 10m1 stop
$198Frontier
Find Deal
Sat, May 24 - Sat, May 31
Delta Logo
12:18 pm - 12:37 amONT-MIA
9h 19m1 stop
Delta Logo
6:15 pm - 11:04 amMIA-ONT
19h 49m1 stop
$331Delta
Find Deal
Sat, May 17 - Wed, May 28
Delta Logo
12:18 pm - 11:04 pmONT-MIA
7h 46m1 stop
Delta Logo
7:05 pm - 11:42 pmMIA-ONT
7h 37m1 stop
$337Delta
Find Deal
Sat, May 17 - Thu, May 22
United Airlines Logo
1:34 pm - 11:59 pmONT-MIA
7h 25m1 stop
United Airlines Logo
8:40 am - 5:25 pmMIA-ONT
11h 45m2 stops
$342United Airlines
Find Deal
Thu, Aug 7 - Fri, Aug 15
American Airlines Logo
12:59 am - 12:42 pmONT-MIA
8h 43m1 stop
American Airlines Logo
9:10 am - 1:41 pmMIA-ONT
7h 31m1 stop
$356American Airlines
Find Deal
Sun, Aug 3 - Tue, Aug 5
Southwest Logo
6:20 am - 9:00 pmONT-MIA
11h 40m2 stops
Southwest Logo
1:00 pm - 9:00 pmMIA-ONT
11h 00m2 stops
$391Southwest
Find Deal
Tue, Aug 5 - Tue, Aug 12
American Airlines Logo
12:55 pm - 11:59 pmONT-MIA
8h 04m1 stop
American Airlines Logo
5:18 am - 10:04 amMIA-ONT
7h 46m1 stop
$401American Airlines
Find Deal
Sun, Jun 22 - Sat, Jun 28
United Airlines Logo
6:32 pm - 5:16 amONT-MIA
7h 44m1 stop
United Airlines Logo
4:50 pm - 9:10 pmMIA-ONT
7h 20m1 stop
$432United Airlines
Find Deal
Fri, Jun 6 - Tue, Jun 10
Southwest Logo
7:35 am - 10:20 pmONT-MIA
11h 45m2 stops
Southwest Logo
6:20 am - 4:00 pmMIA-ONT
12h 40m2 stops
$453Southwest
Find Deal
Fri, Jul 25 - Sat, Aug 2
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KAYAK's insights & trends for Ontario to Miami flights

Get data-powered insights and trends into flights from Ontario to Miami to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Miami?

The average price of all round-trip flights from Ontario to Miami clicked on KAYAK for each day over the last 12 months.

For Ontario to Miami, Wednesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Miami back to Ontario, the best deals are generally found on Thursday, with Sunday being the most expensive.

What is the cheapest month to fly from Ontario to Miami?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Miami, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Miami is September, where tickets cost $289 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $541 and $512 respectively.

How far in advance should I book a flight from Ontario to Miami?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Miami, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Miami, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$85
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 2% increase in price.
Flight from Ontario to Miami

When to book flights from Ontario to Miami

Are your dates flexible? Find out the best times to travel from Ontario to Miami based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Miami

  • What are some of the ground transportation choices to get me from the Miami International Airport (MIA) to downtown Miami?

    One of the most convenient choices is to travel on the MIA Mover from the airport to the rental car center at the airport and then board the Miami Dade Transit MIA Line to travel downtown. This entire trip takes around 30 minutes to complete. Passengers can also travel on buses provided by Jet Set Express that make the trip in about 45 minutes. When you travel in a taxi from the airport, you should expect a trip time of about 11 minutes.

  • Where should I look for my rental car company at the Miami International Airport?

    All the rental car companies that operate at this airport do so at the rental car center. Passengers can access the center by traveling on the MIA Mover that passengers will find by traveling on the third-level sky ride to go from the terminal building to the MIA Mover station.

  • Where should I plan on meeting my rideshare vehicle at Miami International Airport?

    All rideshare vehicles do their pick-ups on the arrivals level at the middle median passengers will find easy to access outside of most doors from the baggage claim area of the terminal.

  • What are some choices for hotels that location close to the Miami International Airport?

    One of the most convenient hotel choices at this airport is the Miami International Airport Hotel, which has a location on the second level of Terminal E.

  • What is the cheapest flight from Ontario to Miami?

    In the last 3 days, the lowest price for a flight from Ontario to Miami was $85 for a one-way ticket and $169 for a round-trip.

  • Do I need a passport to fly between Ontario and Miami?

    A passport is not required to fly from Ontario to Miami.

  • Which aircraft models fly most regularly from Ontario to Miami?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Miami?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Miami, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Miami from Ontario?

    Phoenix is the most popular layover city among KAYAK users traveling from Ontario to Miami.

  • Which is the best airline for flights from Ontario to Miami, Delta or Southwest?

    The two airlines most popular with KAYAK users for flights from Ontario to Miami are Delta and Southwest. With an average price for the route of $418 and an overall rating of 8.0, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $554 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Ontario to Miami?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Miami.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Miami?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Miami from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Miami?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Miami with an airline and back to Ontario with another airline. Booking your flights between Ontario and MIA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Miami?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Miami from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Ontario to Miami

  • A convenient way to travel to the Orlando International Airport (MCO) from the downtown Orlando area that does not involve driving your own car is to travel on the Line 11 bus provided by Lynx Central Florida Transport, which can make this trip and about 37 minutes.
  • When you are driving your own car to the Orlando International Airport, one of the most convenient ways to park is in the airport's valet service, which also includes complimentary curbside check-in for passengers traveling on several domestic airlines from this airport. When you are looking for the most economical choice for parking, choose the North or South Park Place Economy Lots.
  • If you tend to get a little bit lost in a major airport like Orlando International Airport, this airport features its own dedicated app called the Orlando MCO Airport App that will give passengers step-by-step instructions to any point on the airport property.
  • Passengers looking for a way to pass the time before a flight from the Orlando International Airport should know that this airport offers an extensive public art collection located throughout all the buildings at the airport property. The highlight of this collection are the tech, wellness, space, and fun gardens that take up huge spaces on the floor at various points in the terminal buildings.
  • If you're looking for a great way to speed through the security checkpoint at Orlando International Airport, this airport offers a program called MCO Reserve that allows passengers the ability to book a time to go through security online before their trip.

Top 5 airlines serving from Ontario to Miami

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Miami. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Miami? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
8.0Comfort
8.2Boarding
7.6Entertainment
7.1Food
8.6Crew
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

Plz don't take away free bags and free seating

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

It went well. Plane wasn't full. Will be great when assigned seating is in place

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

This was a code share Latam Airlines flight - everything very good except there was no seatback entertainment

Don't waste your money or points on first class. Delta first class is a joke. The seats were rickety, the food was awful, and nothing worked, wifi, my light, the power plug - and it was dirty - the fold out table was gross. For 2-3 hours, tough it out in Economy.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Our seats were all the way in back of the plane,

Maybe add a seat trade app for flyers that didn’t get seats together

The flight attendants in First Class were mediocre at best. They did not take our tray away until we were about to land and only did so when I press the call button. The United person at the United Club was asked to get us our boarding pass since we missed the flight due in Chicago. She argued that we did not have seats on the flight given to us in Moline. Furthermore, she was adamant that we did not have a First Class ticket. After I spent much time with her trying to show we were correct, she reluctantly agreed. She was probably the most incompetent ticketing person I have ever met and I have traveled 3 million miles on United plus many additional miles with other carriers. United has definitely deteriorated in more than on way.

Would have thought that they would gas up plane before everyone got on board

The flights were terribly delayed and then cancelled which forced us booking another night at the hotel. Very poor management from American Airlines

Crew was late. Baggage was late. 2hs inside the plane waiting fro de-icing and traffic. A 3:30hs flight ended up being almost 6hs inside the airplane.

Checking in at the counter was very disappointing. The lady had a very bad attitude and smart at me. She had no smile, did not greet me by name, or acknowledge me as a valued customer. Poor reflection of the airline.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Boarded over an hour late, no communication, the sign just changed, no attendant to answer questions - she disappeared forever (hiding). Small plane and couldn’t hear the overhead nor understand.

Two issues. The plane was old and dirty. The armrest looked like an old car that had the vinyl rubbed off. The Seats in these aircraft are about as hard and uncomfortable. I want to tour Italy for a month and I want to buy a one-way ticket to Thailand but I will not sit in the seats these planes have. It is seriously stupid how hard they are.

Check bag location is full of rude employees who are unwilling to assist with issues after talking to AA on the phone and relaying messages. The boarding was good. While on the flight it got really hot. Asked flight attendant if there’s a way to drop the temp and make it more comfortable as we are flying from DC to Miami so flying from cold to hot weather. No changes made. Stayed hot and uncomfortable on the plane. When asked again about the AC being down the flight attendant said no the WiFi was down but not the AC. I mentioned it was still hot. No changes.

There was a delay that affected all passengers with connecting flights.

I love to flight american however my carry on had to be sent with regular luggage and it was broken. Don't appreciate that. If when I buy a ticket says I can take a carry on and a hand item there should be space for mwsy stuff and not be basically forced to send the item even if it's at no charge. A.A. needs to work on that. Everything else excellent.

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

I chose the seats when booked the flight and paid for them. However after checking in I found we were assigned different seats!

It was a no frills flight. Would have liked to be able to charge my device

Seats were extremely uncomfortable and it was very hot on the plane.

Since they are a budget airline, I wasn’t expecting too much but they did some things well. They were on time, the plane was clean, boarding was fairly straightforward and the staff was cheerful and friendly. The only downside was comfort. The seats were fairly hard and after a 2 hour flight your rear end is not feeling so great. Maybe a little more cushion in the seats, Frontier!

Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

Our flight was suppose to leave at 9pm and we didn’t board until after 3am. We lost a whole day at our hotel and half a day at a park we paid a lot of money for.

Boarding was organized and flight was on time. Overall very satisfied with my flight.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

Everything you need to know for your flight from Ontario to Miami

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