ONT - MIA

$96 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 8/15. 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.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Miami

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Miami, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Miami, as well as popular online travel agencies
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Flights Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Miami

Sun, Aug 10 - Sun, Aug 17
Frontier Logo
5:14 pm - 5:45 amONT-MIA
9h 31m1 stop
Frontier Logo
10:37 am - 7:14 pmMIA-ONT
11h 37m1 stop
$179Frontier
Find Deal
Wed, Jul 30 - Sun, Aug 3
Frontier Logo
7:22 pm - 5:45 amONT-MIA
7h 23m1 stop
Frontier Logo
10:37 am - 7:14 pmMIA-ONT
11h 37m1 stop
$188Frontier
Find Deal
Thu, Jul 31 - Sun, Aug 3
Frontier Logo
5:14 pm - 5:45 amONT-MIA
9h 31m1 stop
Frontier Logo
10:37 am - 7:14 pmMIA-ONT
11h 37m1 stop
$197Frontier
Find Deal
Thu, Jul 24 - Thu, Jul 31
Frontier Logo
5:14 pm - 5:45 amONT-MIA
9h 31m1 stop
Frontier Logo
7:15 am - 4:19 pmMIA-ONT
12h 04m1 stop
$223Frontier
Find Deal
Thu, Aug 7 - Thu, Aug 14
Frontier Logo
5:14 pm - 5:45 amONT-MIA
9h 31m1 stop
Frontier Logo
10:37 am - 7:14 pmMIA-ONT
11h 37m1 stop
$229Frontier
Find Deal
Wed, Aug 6 - Mon, Aug 11
Frontier Logo
7:22 pm - 5:45 amONT-MIA
7h 23m1 stop
Frontier Logo
7:15 am - 11:53 amMIA-ONT
7h 38m1 stop
$233Frontier
Find Deal
Wed, Aug 6 - Thu, Aug 14
Frontier Logo
5:21 pm - 6:30 amONT-MIA
10h 09m1 stop
Frontier Logo
7:15 am - 4:19 pmMIA-ONT
12h 04m1 stop
$235Frontier
Find Deal
Thu, Aug 14 - Mon, Aug 18
Frontier Logo
5:14 pm - 5:45 amONT-MIA
9h 31m1 stop
Frontier Logo
7:15 am - 11:53 amMIA-ONT
7h 38m1 stop
$237Frontier
Find Deal
Wed, Aug 6 - Mon, Aug 11
Frontier Logo
5:21 pm - 6:30 amONT-MIA
10h 09m1 stop
Frontier Logo
7:15 am - 11:53 amMIA-ONT
7h 38m1 stop
$239Frontier
Find Deal
Sat, Aug 30 - Sun, Aug 31
Delta Logo
11:45 am - 12:24 amONT-MIA
9h 39m1 stop
Delta Logo
6:00 am - 10:20 amMIA-ONT
7h 20m1 stop
$277Delta
Find Deal
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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 $329 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $572 and $508 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 4 weeks before departure.

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$96
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 20% lower on average.
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 $96 for a one-way ticket and $179 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?

    SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Miami, with SkyTeam 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 $390 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 $536 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.

Reviews of the 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 4243 reviews
7.0Food
7.6Entertainment
8.6Crew
8.0Comfort
8.1Boarding
Airline reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

4.0 OkayTraci, Jun 2025OAK - SEA
Read more Southwest reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

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.

this crew didn't care much. bumping carts into seats more times than i care to remember

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

This flight never occurred because AA couldn’t get their act together.

During service there was a garbage/beverage spill near our seats that never was cleaned up. On a relatively short flight when we’re fortunate enough to actually have in flight movies available, the flight attendants pitching the AADVANTAGE credit card shouldn’t talk for the last 10 minutes of the flight so that we miss the end of the movie.

The boarding was pretty easy. However, the first class seats are not lay flat as other airlines (like JetBlue) has and therefore sleeping was a challenge.

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.

2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.

Since you have to pay for overhead bags then they shouldn't be running out of space and asking individuals who paid to remove stuff from the overhead

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

You get what you pay for nothing essentially but a hard uncomfortable seat that doesn’t recline and kids screaming all around you and chaotic boarding and limited check bag weight allowance when compared to other airlines

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!

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