Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Miami from $99

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 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Miami

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:36 am - 12:21 am
ONT
-
MIA
11h 45m
1 stop
Frontier Logo
9:59 am - 7:01 pm
MIA
-
ONT
12h 02m
1 stop
$206Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
6:00 am - 4:21 pm
ONT
-
MIA
31h 21m
2 stops
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$222Frontier
Wed, Aug 19 - Wed, Aug 26
Frontier Logo
9:36 am - 12:21 am
ONT
-
MIA
11h 45m
1 stop
Frontier Logo
9:59 am - 7:01 pm
MIA
-
ONT
12h 02m
1 stop
$230Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
6:00 am - 1:32 pm
ONT
-
MIA
28h 32m
2 stops
Frontier Logo
6:50 am - 7:32 am
MIA
-
ONT
27h 42m
1 stop
$240Frontier
Sat, Aug 29 - Sun, Sep 6
Frontier Logo
10:59 am - 2:33 pm
ONT
-
MIA
24h 34m
1 stop
Frontier Logo
6:50 am - 7:32 am
MIA
-
ONT
27h 42m
1 stop
$253Frontier
Tue, Aug 18 - Sun, Aug 23
Frontier Logo
9:36 am - 1:53 pm
ONT
-
MIA
25h 17m
2 stops
Frontier Logo
9:59 am - 7:01 pm
MIA
-
ONT
12h 02m
1 stop
$256Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
7:56 pm - 4:52 am
ONT
-
MIA
29h 56m
1 stop
Frontier Logo
9:59 am - 7:01 pm
MIA
-
ONT
12h 02m
1 stop
$257Frontier
Sat, Aug 22 - Sat, Aug 29
Frontier Logo
9:36 am - 12:21 am
ONT
-
MIA
11h 45m
1 stop
Frontier Logo
6:00 am - 11:50 pm
MIA
-
ONT
20h 50m
1 stop
$259Frontier
Mon, Aug 10 - Tue, Aug 18
Frontier Logo
2:55 pm - 5:48 am
ONT
-
MIA
11h 53m
1 stop
Frontier Logo
7:20 am - 1:57 pm
MIA
-
ONT
9h 37m
1 stop
$264Frontier
Sat, Sep 12 - Tue, Sep 15
Frontier Logo
9:33 am - 11:55 pm
ONT
-
MIA
11h 22m
1 stop
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$265Frontier
Mon, Aug 24 - Wed, Aug 26

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Aug 15
ONT9:36 amOntario
11h 45m
1 stop
MIA12:21 amMiami
Aug 22
MIA9:59 amMiami
12h 02m
1 stop
ONT7:01 pmOntario
$206
Frontier
Aug 19
ONT6:00 amOntario
31h 21m
2 stops
MIA4:21 pmMiami
Aug 26
MIA8:00 amMiami
14h 01m
1 stop
ONT7:01 pmOntario
$222
Frontier
Aug 15
ONT9:36 amOntario
11h 45m
1 stop
MIA12:21 amMiami
Aug 22
MIA9:59 amMiami
12h 02m
1 stop
ONT7:01 pmOntario
$230

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 July 23, 2026.
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

Cheapest round-trip

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 8/15

9:36 am-12:21 am

1 stop11h 45m

Miami

Sat 8/22

9:59 am-7:01 pm

1 stop12h 02m

$206

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 8/19

6:00 am-4:21 pm

2 stops31h 21m

Miami

Wed 8/26

8:00 am-7:01 pm

1 stop14h 01m

$222

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 8/15

9:36 am-12:21 am

1 stop11h 45m

Miami

Sat 8/22

9:59 am-7:01 pm

1 stop12h 02m

$230

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 8/29

6:00 am-1:32 pm

2 stops28h 32m

Miami

Sun 9/6

6:50 am-7:32 am

1 stop27h 42m

$240

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 8/18

10:59 am-2:33 pm

1 stop24h 34m

Miami

Sun 8/23

6:50 am-7:32 am

1 stop27h 42m

$253

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 8/15

9:36 am-1:53 pm

2 stops25h 17m

Miami

Sat 8/22

9:59 am-7:01 pm

1 stop12h 02m

$256

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 8/22

7:56 pm-4:52 am

1 stop29h 56m

Miami

Sat 8/29

9:59 am-7:01 pm

1 stop12h 02m

$257

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 8/10

9:36 am-12:21 am

1 stop11h 45m

Miami

Tue 8/18

6:00 am-11:50 pm

1 stop20h 50m

$259
Quickest round-trip

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 9/12

2:55 pm-5:48 am

1 stop11h 53m

Miami

Tue 9/15

7:20 am-1:57 pm

1 stop9h 37m

$264

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 8/24

9:33 am-11:55 pm

1 stop11h 22m

Miami

Wed 8/26

8:00 am-7:01 pm

1 stop14h 01m

$265

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between Ontario and Miami?

Prices are currently low for flights on this route.

Typical prices usually range from $334 to $486.
The lowest price recently found on this route was $206.

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 $351. 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 $352.

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

The cheapest day to depart from Ontario to Miami is on a Tuesday when prices can be found for as low as $562. 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 $635.

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 $526. Flying to Miami in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $601. 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 from Ontario 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 $415 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 $356 on momondo.

How have Ontario to Miami flight prices changed over time?

As of July 2026, prices for Ontario to Miami flights are approximately 1% 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

Fastest flight time

7h 25m

Direct flights

None
The fastest flight from Ontario to Miami takes 7h 25m
There are no direct flights from Ontario to Miami. There are no popular flight routes from Ontario to Miami.
Search flight deals

Frequently asked questions about flying from Ontario to Miami

  • 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 25m.

  • 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 $148Free CancellationRating
5.6
2,772 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.8
8,484 reviews
Search Delta flights
JetBluePriceFrom $213Free CancellationRating
7.1
3,021 reviews
Search JetBlue flights
American AirlinesPriceFrom $325Free CancellationRating
7.1
11,838 reviews
Search American Airlines flights
United AirlinesPriceFrom $326Free CancellationRating
7.4
10,024 reviews
Search United Airlines flights
SouthwestPriceFrom $356Free CancellationRating
8.0
4,236 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
Hollywood
Islamorada
Marco Island
Key Largo
Marathon
Palm Beach
Pompano Beach
Delray Beach
Miami Springs
Dania Beach
Sunny Isles Beach
Bonita Springs
Doral
Jupiter
Lake Worth
Boynton Beach
Deerfield Beach
Lauderdale-by-the-Sea
Surfside

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.

An easier way to manage your Miami trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 8/22
Sat 8/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States