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Cheap flights from Ontario to Miami from $97

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Miami departing on 10/30. 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 Ontario to Miami

Cheap round-trip flights

Frontier Logo
12:32 pm - 2:38 pmONT-MIA
23h 06m1 stop
Frontier Logo
8:00 am - 4:28 pmMIA-ONT
11h 28m1 stop
$158Frontier
Find Deal
Thu, Oct 16 - Mon, Oct 20
Frontier Logo
8:34 am - 12:50 amONT-MIA
13h 16m1 stop
Frontier Logo
8:00 am - 4:28 pmMIA-ONT
11h 28m1 stop
$160Frontier
Find Deal
Fri, Oct 24 - Mon, Oct 27
Frontier Logo
12:28 pm - 2:31 pmONT-MIA
23h 03m1 stop
Frontier Logo
6:00 am - 7:53 amMIA-ONT
28h 53m1 stop
$161Frontier
Find Deal
Thu, Oct 2 - Sun, Oct 5
Frontier Logo
12:32 pm - 2:38 pmONT-MIA
23h 06m1 stop
Frontier Logo
6:00 am - 11:10 amMIA-ONT
8h 10m1 stop
$162Frontier
Find Deal
Thu, Oct 23 - Thu, Oct 30
Frontier Logo
12:05 pm - 6:19 amONT-MIA
15h 14m1 stop
Frontier Logo
6:00 am - 11:10 amMIA-ONT
8h 10m1 stop
$163Frontier
Find Deal
Sat, Nov 8 - Sun, Nov 16
Frontier Logo
8:34 am - 12:50 amONT-MIA
13h 16m1 stop
Frontier Logo
8:00 am - 4:28 pmMIA-ONT
11h 28m1 stop
$170Frontier
Find Deal
Fri, Oct 24 - Mon, Oct 27
Frontier Logo
7:17 am - 5:51 pmONT-MIA
7h 34m1 stop
Frontier Logo
6:00 am - 11:10 amMIA-ONT
8h 10m1 stop
$171Frontier
Find Deal
Sun, Nov 9 - Fri, Nov 14
Frontier Logo
8:24 am - 10:27 pmONT-MIA
11h 03m1 stop
Frontier Logo
8:00 am - 6:39 pmMIA-ONT
13h 39m1 stop
$172Frontier
Find Deal
Mon, Nov 3 - Mon, Nov 10
Frontier Logo
8:34 am - 12:50 amONT-MIA
13h 16m1 stop
Frontier Logo
6:00 am - 11:10 amMIA-ONT
8h 10m1 stop
$173Frontier
Find Deal
Fri, Oct 24 - Sat, Nov 1
Multiple Airlines Logo
8:34 am - 8:54 amONT-MIA
21h 20m1 stop
Multiple Airlines Logo
7:23 pm - 5:54 pmMIA-ONT
25h 31m1 stop
$244Multiple Airlines
Find Deal
Sat, Oct 11 - Wed, Oct 15

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Oct 16
ONT12:32 pmOntario
23h 06m
1 stop
MIA2:38 pmMiami
Oct 20
MIA8:00 amMiami
11h 28m
1 stop
ONT4:28 pmOntario
$158
Find similar
Frontier
Oct 24
ONT8:34 amOntario
13h 16m
1 stop
MIA12:50 amMiami
Oct 27
MIA8:00 amMiami
11h 28m
1 stop
ONT4:28 pmOntario
$160
Find similar
Frontier
Oct 2
ONT12:28 pmOntario
23h 03m
1 stop
MIA2:31 pmMiami
Oct 5
MIA6:00 amMiami
28h 53m
1 stop
ONT7:53 amOntario
$161
Find similar

United Airlines flights from Ontario to Miami

Our best United Airlines deals on Ontario to Miami flight tickets
United Airlines
Sep 25
ONT5:05 amOntario
7h 42m
1 stop
MIA3:47 pmMiami
Oct 1
MIA4:56 pmMiami
7h 28m
1 stop
ONT9:24 pmOntario
$461
Find similar
United Airlines
Sep 26
ONT5:05 amOntario
14h 40m
2 stops
MIA10:45 pmMiami
Sep 28
MIA8:05 amMiami
7h 46m
1 stop
ONT12:51 pmOntario
$500
Find similar
United Airlines
Sep 25
ONT5:05 amOntario
14h 40m
2 stops
MIA10:45 pmMiami
Sep 30
MIA3:35 pmMiami
7h 49m
1 stop
ONT8:24 pmOntario
$527
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Miami that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Ontario to Miami that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 10/16

12:32 pm-2:38 pm

1 stop23h 06m

Miami

Mon 10/20

8:00 am-4:28 pm

1 stop11h 28m

$158

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 10/24

8:34 am-12:50 am

1 stop13h 16m

Miami

Mon 10/27

8:00 am-4:28 pm

1 stop11h 28m

$160

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 10/2

12:28 pm-2:31 pm

1 stop23h 03m

Miami

Sun 10/5

6:00 am-7:53 am

1 stop28h 53m

$161

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 10/23

12:32 pm-2:38 pm

1 stop23h 06m

Miami

Thu 10/30

6:00 am-11:10 am

1 stop8h 10m

$162

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 11/8

12:05 pm-6:19 am

1 stop15h 14m

Miami

Sun 11/16

6:00 am-11:10 am

1 stop8h 10m

$163

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 10/24

8:34 am-12:50 am

1 stop13h 16m

Miami

Mon 10/27

8:00 am-4:28 pm

1 stop11h 28m

$170

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sun 11/9

7:17 am-5:51 pm

1 stop7h 34m

Miami

Fri 11/14

6:00 am-11:10 am

1 stop8h 10m

$171

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 11/3

8:24 am-10:27 pm

1 stop11h 03m

Miami

Mon 11/10

8:00 am-6:39 pm

1 stop13h 39m

$172

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 10/24

8:34 am-12:50 am

1 stop13h 16m

Miami

Sat 11/1

6:00 am-11:10 am

1 stop8h 10m

$173

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 10/11

8:34 am-8:54 am

1 stop21h 20m

Miami

Wed 10/15

7:23 pm-5:54 pm

1 stop25h 31m

$244

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Miami from

How to get the cheapest flight ticket from Ontario to Miami

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 Miami?

The month of September is, on average, the cheapest month to fly to Miami from Ontario, with most prices found around $344. If you are unable to visit Miami during the month of September, then departing from Ontario during the month August is also very affordable. Most momondo users find prices during this month for around $356.

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

The cheapest day to depart from Ontario to Miami is on a Saturday when prices can be found for as low as $542. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Miami on Sunday is $597.

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

In the afternoon is the cheapest time of day to fly from Ontario to Miami when you can find flight prices for as low as $482. Flying to Miami in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $623. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Miami from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Miami for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Miami from Ontario for as low as $357 on momondo.

How have Ontario to Miami flight prices changed over time?

As of September 2025, prices for Ontario to Miami flights are approximately 65% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Miami

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

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

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

Direct flights

None
There are no direct flights from Ontario to Miami. There are no popular flight routes from Ontario to Miami.
Search flight deals

  • How far is Ontario to Miami by plane?

    Ontario and Miami are 2299.8 mi apart from one another. By plane, this route typically takes 7h 03m.

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

    Prices for flights from Ontario Airport to Miami Airport are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Miami Airport.

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

    The travel and health documents required for your trip to Miami 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 Miami 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 Ontario to Miami?

Best airlines flying from Ontario to Miami

Compare and see reviews for airlines that fly from Ontario to Miami with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $150Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
DeltaPriceFrom $296Free CancellationRating
7.9
7,961 reviews
Search Delta flights
American AirlinesPriceFrom $324Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $326Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
SouthwestPriceFrom $372Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

Traveling to a place near Miami?

Book flights to Miami if you plan to visit one of these locations
Miami Beach
Key Largo
Hollywood
Islamorada
Marco Island
Palm Beach
Marathon
Delray Beach
Pompano Beach
Jupiter
Sunny Isles Beach
Dania Beach
Lake Worth
Deerfield Beach
Bonita Springs
Boynton Beach
Stuart
Doral
Miramar
Miami Gardens

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Miami for you.

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

Yes. momondo enables you to select and highlight flights to Miami from Ontario with this policy.

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

Once all potential Ontario to Miami 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 Ontario to Miami right now. Can momondo alert me if prices change?

Price alerts on flights to Miami from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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