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Cheap flights from Miami to Ontario from $101

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 5/3. 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
12:16 pm - 5:22 amONT-MIA
14h 06m1 stop
$207Frontier
Find Deal
Wed, Apr 23 - Mon, May 19
Frontier Logo
6:00 am - 11:59 pmMIA-ONT
20h 59m1 stop
Frontier Logo
12:16 pm - 5:22 amONT-MIA
14h 06m1 stop
$225Frontier
Find Deal
Thu, May 8 - Thu, May 15
 Logo
6:00 am - 11:20 amMIA-ONT
8h 20m1 stop
 Logo
10:52 am - 6:17 amONT-MIA
16h 25m1 stop
Wed, Apr 30 - Sun, May 4
 Logo
6:00 am - 5:57 pmMIA-ONT
14h 57m1 stop
 Logo
12:16 pm - 5:22 amONT-MIA
14h 06m1 stop
Thu, May 8 - Thu, May 15
Delta Logo
6:00 am - 10:57 amMIA-ONT
7h 57m1 stop
Delta Logo
10:15 pm - 6:50 pmONT-MIA
17h 35m2 stops
$380Delta
Find Deal
Wed, Apr 23 - Tue, Apr 29
Delta Logo
4:47 pm - 10:36 pmMIA-ONT
8h 49m1 stop
Delta Logo
11:45 am - 6:54 pmONT-MIA
28h 09m2 stops
$390Delta
Find Deal
Wed, Apr 23 - Wed, Apr 30
United Airlines Logo
4:48 pm - 10:55 pmMIA-ONT
9h 07m1 stop
United Airlines Logo
5:00 am - 7:59 pmONT-MIA
11h 59m2 stops
$417United Airlines
Find Deal
Wed, Apr 23 - Sat, Apr 26
United Airlines Logo
6:22 am - 3:17 pmMIA-ONT
11h 55m2 stops
United Airlines Logo
5:00 am - 7:59 pmONT-MIA
11h 59m2 stops
$422United Airlines
Find Deal
Wed, Apr 23 - Sat, Apr 26
American Airlines Logo
6:00 am - 1:52 pmMIA-ONT
10h 52m2 stops
American Airlines Logo
6:15 am - 7:17 pmONT-MIA
10h 02m2 stops
$488American Airlines
Find Deal
Sat, May 31 - Wed, Jun 4
American Airlines Logo
1:40 pm - 6:36 pmMIA-ONT
7h 56m1 stop
American Airlines Logo
7:30 am - 8:45 pmONT-MIA
10h 15m2 stops
$517American Airlines
Find Deal
Mon, Jun 2 - Wed, Jun 4

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets
Frontier
Apr 23
MIA6:00 amMiami
20h 59m
1 stop
ONT11:59 pmOntario
May 19
ONT12:16 pmOntario
14h 06m
1 stop
MIA5:22 amMiami
Frontier
May 8
MIA6:00 amMiami
20h 59m
1 stop
ONT11:59 pmOntario
May 15
ONT12:16 pmOntario
14h 06m
1 stop
MIA5:22 amMiami
Frontier
May 8
MIA6:00 amMiami
20h 59m
1 stop
ONT11:59 pmOntario
May 15
ONT12:16 pmOntario
14h 06m
1 stop
MIA5:22 amMiami

Alaska Airlines flights from Miami to Ontario

Our best Alaska Airlines deals on Miami to Ontario flight tickets
Alaska Airlines
May 1
MIA6:01 pmMiami
26h 29m
1 stop
ONT5:30 pmOntario
May 3
ONT4:29 pmOntario
21h 32m
1 stop
MIA5:01 pmMiami
Alaska Airlines
May 1
MIA6:01 pmMiami
32h 58m
1 stop
ONT11:59 pmOntario
May 3
ONT4:29 pmOntario
21h 32m
1 stop
MIA5:01 pmMiami
Alaska Airlines
May 6
MIA6:01 pmMiami
19h 50m
1 stop
ONT10:51 amOntario
May 10
ONT4:29 pmOntario
21h 32m
1 stop
MIA5:01 pmMiami

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 April instead. Flights to Ontario in April, while not as cheap as those in August, still average around $278.

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 23% 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

$101

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 $101. The best round-trip flight deal from Miami to Ontario found on momondo in the last 72 hours is $207.
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. 7h 08m 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
3,276 reviews
Search Frontier flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $253Free CancellationRating
8.0
7,897 reviews
Search Delta flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
8,616 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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