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Cheap flights from Miami to Ontario from $88

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Miami to Ontario departing on 5/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Miami to Los Angeles

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Miami to Los Angeles.
Frontier Logo
6:00 am - 11:59 pmMIA-ONT
20h 59m1 stop
Frontier Logo
12:59 am - 5:22 amONT-MIA
25h 23m1 stop
$181Frontier
Find Deal
Sat, May 10 - Fri, May 16
Frontier Logo
7:25 am - 11:44 amMIA-ONT
7h 19m1 stop
Frontier Logo
12:39 pm - 5:35 amONT-MIA
13h 56m1 stop
$187Frontier
Find Deal
Fri, Jun 6 - Wed, Jun 11
Delta Logo
7:05 pm - 11:42 pmMIA-ONT
7h 37m1 stop
Delta Logo
7:05 am - 7:32 pmONT-MIA
9h 27m1 stop
$299Delta
Find Deal
Tue, May 27 - Tue, Jun 3
Southwest Logo
4:10 pm - 10:55 pmMIA-ONT
9h 45m1 stop
Southwest Logo
5:20 am - 5:20 pmONT-MIA
9h 00m2 stops
$304Southwest
Find Deal
Thu, Aug 14 - Mon, Aug 18
Delta Logo
8:05 am - 7:29 pmMIA-ONT
14h 24m2 stops
Delta Logo
5:05 pm - 11:01 amONT-MIA
14h 56m2 stops
$309Delta
Find Deal
Thu, Aug 14 - Mon, Aug 18
American Airlines Logo
6:24 pm - 11:59 pmMIA-ONT
8h 35m1 stop
American Airlines Logo
7:05 pm - 6:24 amONT-MIA
8h 19m1 stop
$349American Airlines
Find Deal
Wed, Jul 2 - Mon, Jul 7
Southwest Logo
4:10 pm - 10:55 pmMIA-ONT
9h 45m1 stop
Southwest Logo
8:25 pm - 10:50 amONT-MIA
11h 25m2 stops
$368Southwest
Find Deal
Thu, Aug 14 - Sun, Aug 17
American Airlines Logo
5:18 am - 10:04 amMIA-ONT
7h 46m1 stop
American Airlines Logo
12:59 am - 12:45 pmONT-MIA
8h 46m1 stop
$388American Airlines
Find Deal
Sun, Jun 8 - Mon, Jun 9
United Airlines Logo
4:50 pm - 9:10 pmMIA-ONT
7h 20m1 stop
United Airlines Logo
1:33 pm - 11:50 pmONT-MIA
7h 17m1 stop
$394United Airlines
Find Deal
Thu, May 29 - Mon, Jun 2
United Airlines Logo
9:30 am - 3:09 pmMIA-ONT
8h 39m1 stop
United Airlines Logo
5:05 am - 4:24 pmONT-MIA
8h 19m1 stop
$399United Airlines
Find Deal
Thu, May 15 - Wed, May 21

Southwest flights from Miami to Ontario

Our best Southwest deals on Miami to Ontario flight tickets
Southwest
Aug 14
MIA4:10 pmMiami
9h 45m
1 stop
ONT10:55 pmOntario
Aug 18
ONT5:20 amOntario
9h 00m
2 stops
MIA5:20 pmMiami
Southwest
Aug 14
MIA4:10 pmMiami
9h 45m
1 stop
ONT10:55 pmOntario
Aug 17
ONT8:25 pmOntario
11h 25m
2 stops
MIA10:50 amMiami
Southwest
Jul 2
MIA6:15 amMiami
11h 50m
1 stop
ONT3:05 pmOntario
Jul 7
ONT9:20 pmOntario
15h 20m
2 stops
MIA3:40 pmMiami

American Airlines flights from Miami to Ontario

Our best American Airlines deals on Miami to Ontario flight tickets
American Airlines
Jul 2
MIA6:24 pmMiami
8h 35m
1 stop
ONT11:59 pmOntario
Jul 7
ONT7:05 pmOntario
8h 19m
1 stop
MIA6:24 amMiami
American Airlines
Jun 8
MIA5:18 amMiami
7h 46m
1 stop
ONT10:04 amOntario
Jun 9
ONT12:59 amOntario
8h 46m
1 stop
MIA12:45 pmMiami
American Airlines
Jun 6
MIA5:30 pmMiami
8h 32m
1 stop
ONT11:02 pmOntario
Jun 9
ONT7:02 pmOntario
8h 41m
1 stop
MIA6:43 amMiami

See travel insights to Los Angeles from

How to get the cheapest flight ticket from Miami to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ontario?

In general, August is the cheapest month to fly from Miami to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $266. If you aren’t able to travel during the month of August, then book flights to Ontario from Miami during September instead. Flights to Ontario in September, while not as cheap as those in August, still average around $286.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $286. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Miami to Ontario for around $499.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Miami to Ontario when you can find flight prices for as low as $294. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $437 on average. Flights to Ontario from Miami at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Miami to Ontario flight prices changed over time?

As of April 2025, prices for Miami to Ontario flights are approximately 19% cheaper when compared to flights at the same time last year.

When to book flights from Miami to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Miami to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Miami to Ontario (MIA to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Miami to Ontario

Best Price Found

$88

Fastest flight time

6h 45m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Miami in the past 72 hours is $88. The best round-trip flight deal from Miami to Ontario found on momondo in the last 72 hours is $181.
The fastest flight from Miami to Ontario takes 6h 45m
There are no direct flights from Miami to Ontario. Popular non-direct route for this connection is Miami Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)

  • How far is Miami to Ontario by plane?

    A flight from Miami to Ontario will travel around 2299.8 mi. 6h 45m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Miami Airport to Ontario Airport?

    Prices for flights from Miami Airport to Ontario Airport refresh daily.

  • How many operators does momondo search for flights from Miami Airport to Ontario Airport?

  • How old do you have to be to fly from Miami Airport to Ontario Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Miami Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Miami to Ontario?


Best airlines flying from Miami to Ontario

Compare and see reviews for airlines that fly from Miami to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $162Free CancellationRating
5.9
3,283 reviews
Search Frontier flights
American AirlinesPriceFrom $235Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $253Free CancellationRating
8.0
7,920 reviews
Search Delta flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Miami to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Miami.

Can I find flights from Miami to Ontario with flexible booking policies on momondo?

Flights from Miami to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Miami to Ontario?

Once all potential Miami to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Miami to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Miami. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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