ONT - MIA

$71 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 2/24. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$147
Overall average: $459
Multiple Airlines
Sat 3/7Wed 3/11
ONT - MIA • 1 stop
Cheapest one-way
$71
Typical prices: $146-$302
Frontier
Tue 2/24
ONT - MIA • 1 stop
When to travel
September
Cheapest • 18% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight 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

Sat, Mar 7 - Wed, Mar 11
Multiple Airlines Logo
6:15 am - 4:49 am
ONT
-
MIA
19h 34m
1 stop
Multiple Airlines Logo
7:05 am - 11:59 pm
MIA
-
ONT
19h 54m
2 stops
$147Multiple Airlines
Wed, Mar 4 - Sat, Mar 7
Frontier Logo
7:17 pm - 10:28 am
ONT
-
MIA
12h 11m
2 stops
Frontier Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$170Frontier
Tue, Apr 14 - Fri, Apr 24
Frontier Logo
7:29 pm - 7:32 am
ONT
-
MIA
9h 03m
1 stop
Frontier Logo
8:42 am - 10:44 am
MIA
-
ONT
29h 02m
1 stop
$176Frontier
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
8:40 am - 11:40 am
ONT
-
MIA
24h 00m
2 stops
Multiple Airlines Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$179Multiple Airlines
Tue, Feb 24 - Sat, Mar 7
Frontier Logo
8:35 am - 5:48 am
ONT
-
MIA
18h 13m
1 stop
Frontier Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$183Frontier
Sat, Feb 21 - Thu, Feb 26
Frontier Logo
6:00 am - 5:14 am
ONT
-
MIA
20h 14m
1 stop
Frontier Logo
6:45 am - 11:59 pm
MIA
-
ONT
20h 14m
1 stop
$185Frontier
Sat, Mar 7 - Sun, Mar 15
Multiple Airlines Logo
6:15 am - 4:49 am
ONT
-
MIA
19h 34m
1 stop
Multiple Airlines Logo
8:35 pm - 1:28 pm
MIA
-
ONT
43h 53m
2 stops
$186Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Frontier Logo
8:59 pm - 7:32 am
ONT
-
MIA
7h 33m
1 stop
Frontier Logo
8:42 am - 8:04 pm
MIA
-
ONT
14h 22m
1 stop
$187Frontier
Thu, Apr 16 - Tue, Apr 28
Frontier Logo
8:59 pm - 7:32 am
ONT
-
MIA
7h 33m
1 stop
Frontier Logo
7:50 am - 11:55 pm
MIA
-
ONT
19h 05m
1 stop
$188Frontier
Thu, Feb 26 - Fri, Mar 6
Frontier Logo
7:22 pm - 9:09 pm
ONT
-
MIA
22h 47m
2 stops
Frontier Logo
8:08 pm - 11:59 pm
MIA
-
ONT
30h 51m
1 stop
$192Frontier
Booking Insights

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 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 $336 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $536 and $459 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 seasonSeptember
Cheapest flight$71
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 6% 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 $71 for a one-way ticket and $147 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, Star Alliance, 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, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Miami are Southwest and Delta. With an average price for the route of $464 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $387 and an overall rating of 7.9.

  • 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 4280 reviews
8.1Boarding
8.6Crew
7.0Food
7.5Entertainment
8.0Comfort
Airline reviews

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

8.0 ExcellentJoseph, Jan 2026
LGB - PHX
Read more Southwest reviews

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

We got exit row seats both flights. Everything was running on time

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

I've flown several other airlines, and Delta is really on top on things.

The flight was delayed and oversold. I volunteered to give up my seat for compensation. Thinking I could get a good night's sleep instead of arriving home at 2 am. It took over an hour to get the new reservation confirmed, three different gate attendants, and two red coats. It took even longer to confirm the overnight hotel, and when I arrived, the line was 45 minutes long, with two people checking in, and at least 15 people slowly, very slowly—no food except frozen convenience food, no coupon for food from airlines. Slept, headed back to the airport, and that flight had an equipment change and a gate change just as they were about to board. It took an additional hour to board as they cleaned the plane from storage.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

The flight was an hour and a half late departing which was inconvenient

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Wish they didnt delay off-boarding for 10 minutes so i could connect to my flight from miami to tampa

We experienced gate changes and a long delay. My seat was dirty when I boarded and I had to use wipes to clean it myself. There was an unpleasant and overpowering cleaning product scent on the plane as well that lingered through the flight.

Attendants were pleasant and the flight was smooth and relaxed.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

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

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

One of the worst travel experiences I've had. Had a flight scheduled with CVG to RSW on VLSWQX this morning departing at 5:30. Two individuals at the gate and one was in training. Not her fault but she didn't have the ability to check people in resulting in at least 15 families that didn't make it on the plane because they weren't checked into the system in time. When arriving at the airport to drop off our prepaid checked bags, the bag drop off agent asked if we could check our bags at the gate because of the long line. We said no problem so arrived at the gate by 5:00. They told those people that had previously paid for checked bags to stand off to the side while they let others that either didn't have a checked bag or their bag was already on the plan through. Realizing the gate workers had an issue, they either called for help or this lady showed up late for work as she didn't arrive until 5:15. The worker who had been there training the other individual and working diligently to make sure all passengers got on board. He even said that at one point all people that are currently in line are fine but asked the person in training to stand outside the ticketing area around 5:15 to notify any late travels that the flight was in boarding process and they arrrived too late. At that point, we're sill standing off to the side with our pre-paid checked bags patiently waiting. When the new lady arrived she couldn't have been more rude. It was an awful seen. Essentially they had asked for those without an assigned seat to board last, those with pre-paid checked bag stand off to the site and any traveling with a larger items that needed to be checked at the gate (such as a stroller), wait on the side. They realized that the flight needed to leave on time so the gate attendant shut the gate. So anyone without a seat assignment, those that had pre-checked bags, and the worst one I saw was a mother with two infant children was in line with use because she was asked to stand to the side because her stroller. When they shut the door to the plan they told her she could no longer get on. Her checked bags were already on the plane with her car keys in them, and the lady told her we couldn't accept anyone else on because the door was shut. She didn't even have a way to get home from the airport. Truely evil behavior. I've flown Frontier enough to know customer service is not a top priority in the company's mission, but this was an all-time low. I'm sending this after an 18 hour drive that our family just completed to Bonita Springs . I felt really bad for the lady being trained and the other individual trying to help, but when the new lady came to the gate she was truly one of the rudest individuals I've ever met. One lady had been there since 4am but because she didn't have an assigned seat they wouldn't let her on the plan.

Better than expected. Staff were friendly and nice on both flights.

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

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

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

Information on your arrival and departure airports