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MIA - ONT

$97 Find cheap flights from Miami to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Miami to Ontario departing on 8/28. 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
0 bags
Mon 7/1
Mon 7/8

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Miami to Ontario, 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 Miami to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 42,787,818 times on KAYAK, and here is why:

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Cheap flight deals from Miami to Ontario (MIA-ONT)

 
These are the cheapest deals for flights from Miami to Ontario currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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 Miami to Ontario

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Miami to Ontario.

Recent one-way flight deals from Miami to Ontario

Only flying one-way? Below are some of the best one-way flight deals from Miami to Ontario found on KAYAK recently.

Recent last minute flight deals from Miami to Ontario

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Miami to Ontario.

Recent direct flight deals from Miami to Ontario

The latest deals for direct flights from Miami to Ontario so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Miami to Ontario

Find recent round-trip train or bus tickets from Miami to Ontario.

All round-trip flight deals to Ontario

The cheapest plane tickets to Ontario found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:21 pm - 11:39 pmMIA-ONT
11h 18m1 stop
12:49 am - 12:41 amONT-MIA
20h 52m1 stop
$188Frontier
Find Deal
Tue, Aug 20 - Fri, Aug 23
3:21 pm - 11:44 pmMIA-ONT
11h 23m1 stop
12:49 am - 12:41 amONT-MIA
20h 52m1 stop
$189Frontier
Find Deal
Sat, Aug 31 - Sat, Sep 7
3:21 pm - 11:39 pmMIA-ONT
11h 18m1 stop
12:49 am - 12:41 amONT-MIA
20h 52m1 stop
$190Frontier
Find Deal
Wed, Aug 28 - Fri, Aug 30
6:00 am - 10:13 amMIA-ONT
7h 13m1 stop
11:23 am - 12:32 amONT-MIA
10h 09m1 stop
$317Delta
Find Deal
Thu, Jul 25 - Sat, Aug 3
4:47 pm - 9:52 pmMIA-ONT
8h 05m1 stop
5:15 am - 3:38 pmONT-MIA
7h 23m1 stop
$329United Airlines
Find Deal
Tue, Nov 5 - Tue, Nov 12
6:00 am - 10:13 amMIA-ONT
7h 13m1 stop
10:00 pm - 11:28 amONT-MIA
10h 28m2 stops
$352Delta
Find Deal
Thu, Aug 8 - Sun, Aug 11
4:47 pm - 9:52 pmMIA-ONT
8h 05m1 stop
6:02 am - 3:41 pmONT-MIA
6h 39m1 stop
$418United Airlines
Find Deal
Thu, Nov 21 - Sat, Nov 30
5:55 pm - 3:33 pmMIA-ONT
24h 38m1 stop
7:33 pm - 4:13 pmONT-MIA
17h 40m2 stops
$497Alaska Airlines
Find Deal
Fri, Sep 13 - Tue, Sep 17
10:35 am - 10:32 pmMIA-ONT
14h 57m1 stop
11:47 pm - 9:35 amONT-MIA
30h 48m1 stop
$510JetBlue
Find Deal
Fri, Jul 26 - Sun, Aug 4
10:35 am - 10:32 pmMIA-ONT
14h 57m1 stop
11:47 pm - 9:35 amONT-MIA
30h 48m1 stop
$546JetBlue
Find Deal
Fri, Jul 26 - Sun, Aug 4
3:21 pm - 11:39 pmMIA-ONT
11h 18m1 stop
$97Frontier
Find Deal
Wed, Aug 28
3:21 pm - 11:39 pmMIA-ONT
11h 18m1 stop
$100Frontier
Find Deal
Wed, Aug 28
6:29 pm - 11:43 pmMIA-ONT
8h 14m1 stop
$147Delta
Find Deal
Tue, Jun 4
5:18 am - 9:54 amMIA-ONT
7h 36m1 stop
$168American Airlines
Find Deal
Mon, Aug 19
5:02 pm - 9:11 pmMIA-ONT
7h 09m1 stop
$169United Airlines
Find Deal
Thu, Aug 15
12:33 pm - 11:59 pmMIA-ONT
14h 26m2 stops
$194Delta
Find Deal
Fri, Jul 12
3:29 pm - 8:48 pmMIA-ONT
8h 19m1 stop
$197United Airlines
Find Deal
Tue, Jun 4
10:55 am - 11:59 pmMIA-ONT
16h 04m2 stops
$204Alaska Airlines
Find Deal
Mon, Aug 19
10:35 am - 11:58 pmMIA-ONT
16h 23m2 stops
$291Alaska Airlines
Find Deal
Sat, Jun 8
9:15 pm - 8:50 amMIA-ONT
14h 35m2 stops
$346American Airlines
Find Deal
Mon, Aug 19
7:30 am - 6:23 amMIA-ONT
25h 53m1 stop
12:49 am - 1:00 amONT-MIA
21h 11m1 stop
$197Frontier
Find Deal
Thu, Jun 6 - Wed, Jun 12
7:30 am - 6:23 amMIA-ONT
25h 53m1 stop
9:36 pm - 1:00 amONT-MIA
24h 24m1 stop
$200Frontier
Find Deal
Thu, Jun 6 - Mon, Jun 10
7:30 am - 6:23 amMIA-ONT
25h 53m1 stop
10:23 pm - 12:08 amONT-MIA
22h 45m1 stop
$203Frontier
Find Deal
Thu, Jun 6 - Fri, Jun 7
2:47 pm - 11:59 pmMIA-ONT
12h 12m1 stop
12:59 am - 1:00 amONT-MIA
21h 01m1 stop
$207Frontier
Find Deal
Mon, Jun 3 - Mon, Jun 10
7:04 am - 11:52 amMIA-ONT
7h 48m1 stop
11:59 pm - 11:10 amONT-MIA
8h 11m1 stop
$375American Airlines
Find Deal
Tue, Jun 4 - Sun, Jun 9
6:29 pm - 11:43 pmMIA-ONT
8h 14m1 stop
7:05 am - 5:07 pmONT-MIA
7h 02m1 stop
$426Delta
Find Deal
Tue, Jun 4 - Wed, Jun 12
3:29 pm - 8:48 pmMIA-ONT
8h 19m1 stop
5:15 am - 4:10 pmONT-MIA
7h 55m1 stop
$436United Airlines
Find Deal
Tue, Jun 4 - Tue, Jun 11
12:08 pm - 10:27 pmMIA-ONT
13h 19m2 stops
1:29 pm - 11:46 pmONT-MIA
7h 17m1 stop
$483United Airlines
Find Deal
Tue, Jun 4 - Wed, Jun 5
8:05 am - 4:36 pmMIA-ONT
11h 31m2 stops
10:00 pm - 11:21 amONT-MIA
10h 21m2 stops
$808Delta
Find Deal
Tue, Jun 4 - Sun, Jun 9
3:35 pm - 10:57 pmMIA-ONT
10h 22m1 stop
12:58 am - 1:55 pmONT-MIA
9h 57m1 stop
$1,008Volaris
Find Deal
Thu, Jun 6 - Thu, Jun 6

Flights from Miami to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Miami to Ontario 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 Miami to Ontario?

The average price of all flights from Miami to Ontario clicked on KAYAK for each day over the last 12 months.
When flying from Miami to Ontario, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Miami, you’ll find the best rates on Tuesdays and the most expensive ones on Fridays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Miami to Ontario, 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 Miami to Ontario is April, where tickets cost $242 on average. On the other hand, the most expensive months are July and March, where the average cost of tickets is $492 and $366 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Miami to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Miami to Ontario, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 61 days before departure.

Which airlines provide the cheapest flights from Miami to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Miami to Ontario found on KAYAK was with Frontier for $97. Frontier proposed a round-trip connection from $188 and Delta from $317.

Good to know

Low season

June

High season

December

Cheapest flight

$97
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Miami to Ontario

When to book flights from Miami to Ontario

Are your dates flexible? Find out the best times to travel from Miami to Ontario 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 Miami to Ontario

  • What is the cheapest flight from Miami to Ontario?

    In the last 3 days, the lowest price for a flight from Miami to Ontario was $97 for a one-way ticket and $188 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Miami to Ontario?

    Miami and Ontario are both served by 1 main airport. You will leave Miami from Miami and will be arriving at Ontario.

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

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

  • Which airline alliances offer flights from Miami to Ontario?

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

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

    The two airlines most popular with KAYAK users for flights from Miami to Ontario are Delta and United Airlines. With an average price for the route of $316 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $428 and an overall rating of 7.4.

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

    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 Miami to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Miami 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 Miami to Ontario?

    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 Ontario with an airline and back to Miami with another airline. Booking your flights between Miami and ONT 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 Miami to Ontario?

    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 Ontario from Miami up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from Miami to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Miami to Ontario. 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 Miami to Ontario? 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
DeltaOverall score based on 10419 reviews
7.9Comfort
8.2Boarding
8.0Entertainment
8.6Crew
7.4Food
Airline reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

8.0 ExcellentLiam, May 2024SLC - SJC
Read more about Delta reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The 1st class male crew member was very pleasant - the short female with round glasses , maybe in 50’s had no personality- never spoke when delivering my food, drink, & never smiled the whole trip! In fact looked annoyed when the boarding proses was happening- I would never hire this woman - unfriendly . Have never dealt with a crew member like her-

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

The main person that was coordinating everything was a short white/light skin Spanish man and he was very rude. It honestly made me feel like it was everyone’s First day at work. His announcements were very not reasonable and they did not make sense. The stewardess on the flight that made the announcements she didn’t even know what she was talking about she sounded inebriated. There were no snacks or drinks on our flight there wasn’t even much turbulence. This flight was not enjoyable nor was it what a Delta flight should be and just this past week I flew with Delta 3 times.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

Well....let's start from the point that I had to stay in airport for 12 hours instead of 2 that was scheduled. Poor company and even worst customer service. Never again....

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

The flight was delayed almost 2 hours. Bad customer service etc. I will never fly Luthansa. Ever!!!

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Was lucky to have a employee at the AA checkin counter that had compassion and understood they ordeal that we went through with our original flight being diverted, needing to stay in the aircraft and then flying to the original destination; adding hours to the trip and forcing us to miss our connection and our rebooked connection. She was able to get up on standby on the highest priority on the next flight to the closest airport we need to be at and it all worked out despite being many hours late.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Horrible people at the gate, they force me to check in my carry on, even thought no one behind me has to do it. I had to get out of the airport in NY to get my bag and go thru security again on my way to Honk Kong. The worst part is the employee threatened me with loosing the flights if don’t comply.

Horrible. Flight was delayed and very bumpy. I was super unhappy

The agents at the gate were rude. The stwards were pleasant. The seats were comfortable. The tray table had crumbs on it. A passenger talked constantlt and very loudly for the entire flight annoying many passengers. The stewards did not ask her to speak in a lower voice but my travel partner did.

Literally the worst experience ever and I had my service dog with me. Flight was supposed to leave at 1:51 PM but the plane arrived late. They boarded us around 3 PM and kept us on the plane for an hour saying that due to weather conditions in Miami, we could not takeoff yet. After waiting for an hour, they deplaned. And then they will not give us our bags back that we could just leave and schedule for another flight. Every hour they kept updating saying we have to wait another hour without any explanation as to what was going on. Eventually, I went to customer service to change my ticket, but by the time I made it to the front of the line, they started boarding my flight again. And then when we got onto the flight, they said there were two flight attendants That were past their shift. They kept us on the plane for about another 40 minutes until they told us they had no other flight attendance and had to deplane again. Then I gave us hotel vouchers and told us we would be on a flight at 6 AM the next day. At this point it is about 9 PM. I get to the hotel with my dog, who hasn’t been able to go potty for about eight hours. When I arrived at the hotel, I got a text alert saying my flight has been canceled at 6 AM and they moved past to 5 AM, however the hotel shuttle doesn’t leave early enough to make it to the airport for 5 AM flight. So me and some other passengers got a cab after about three hours of sleep to get back to the airport. This was the worst experience ever.

One of the worst flights I have ever taken Delayed over an hour without communication from the crew; very scary Entertainment not working Crew NASTY cabin cold

May never fly American again Delay in take off WITHOUT EXPLANATION Cabin freezing Crew NASTY entertainment did not work entire flight

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

See my previous comment which is mostly about our flight from Phoenix to SFO

The check in at the airport was awful. Told I need to pay for a bag. The item was taken at screening. I went back to get my $ back and they gave me a coupon with a QR code that doesn’t work. Worst costumer service ever!!!!!

4 hour delay because they used our aircraft to fly a different segment (per the captain)

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

I had to cancel within 1hour of the reservation an they put you through hell to . no live customer service desk. I'm handy caped and they make it almost impossible to cancel. They are steeling my money. You should not have that airline on your site. Contact me and I will give you all info. Of what the are doing to me just notable treatment they are set up like that to take people

Book cheap flights from Miami to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Miami to Ontario found on KAYAK in the last 72 hours.
8/28Wed
1 stopFrontier
11h 18mMIA-ONT
$97
8/28Wed
1 stopFrontier
11h 18mMIA-ONT
$100
6/4Tue
1 stopDelta
8h 14mMIA-ONT
$147
8/19Mon
1 stopAmerican Airlines
7h 36mMIA-ONT
$168
8/15Thu
1 stopUnited Airlines
7h 09mMIA-ONT
$169
7/12Fri
2 stopsDelta
14h 26mMIA-ONT
$194
6/4Tue
1 stopUnited Airlines
8h 19mMIA-ONT
$197
8/19Mon
2 stopsAlaska Airlines
16h 04mMIA-ONT
$204
6/8Sat
2 stopsAlaska Airlines
16h 23mMIA-ONT
$291
8/19Mon
2 stopsAmerican Airlines
14h 35mMIA-ONT
$346

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Last minute flights from Miami to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Miami to Ontario that are departing in the next 10 days.
6/6Thu
multi-stopFrontier
25h 53mMIA-ONT
6/12Wed
multi-stopFrontier
21h 11mONT-MIA
$197
6/6Thu
multi-stopFrontier
25h 53mMIA-ONT
6/10Mon
multi-stopFrontier
24h 24mONT-MIA
$200
6/6Thu
multi-stopFrontier
25h 53mMIA-ONT
6/7Fri
multi-stopFrontier
22h 45mONT-MIA
$203
6/3Mon
multi-stopFrontier
12h 12mMIA-ONT
6/10Mon
multi-stopFrontier
21h 01mONT-MIA
$207
6/4Tue
multi-stopAmerican Airlines
7h 48mMIA-ONT
6/9Sun
multi-stopAmerican Airlines
8h 11mONT-MIA
$375
6/4Tue
multi-stopDelta
8h 14mMIA-ONT
6/12Wed
multi-stopDelta
7h 02mONT-MIA
$426
6/4Tue
multi-stopUnited Airlines
8h 19mMIA-ONT
6/11Tue
multi-stopUnited Airlines
7h 55mONT-MIA
$436
6/4Tue
multi-stopUnited Airlines
13h 19mMIA-ONT
6/5Wed
multi-stopUnited Airlines
7h 17mONT-MIA
$483
6/4Tue
multi-stopDelta
11h 31mMIA-ONT
6/9Sun
multi-stopDelta
10h 21mONT-MIA
$808
6/6Thu
multi-stopVolaris
10h 22mMIA-ONT
6/6Thu
multi-stopVolaris
9h 57mONT-MIA
$1,008

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Miami - Ontario Flights

Departure:

Miami (MIA)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Miami

Cabin classes: