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Cheap flights from Miami to Los Angeles from $67

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 Los Angeles departing on 1/14. 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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Frontier Logo
6:18 pm - 11:24 pm
MIA
-
ONT
8h 06m1 stop
Frontier Logo
7:15 am - 5:12 pm
ONT
-
MIA
6h 57m1 stop
$150Frontier
Sat, Jan 24 - Sat, Jan 31
Frontier Logo
5:47 pm - 12:20 am
MIA
-
ONT
9h 33m1 stop
Frontier Logo
8:36 am - 5:48 am
ONT
-
MIA
18h 12m1 stop
$168Frontier
Thu, Feb 5 - Tue, Feb 10
Frontier Logo
5:47 pm - 12:20 am
MIA
-
ONT
9h 33m1 stop
Frontier Logo
7:15 am - 5:12 pm
ONT
-
MIA
6h 57m1 stop
$182Frontier
Thu, Jan 29 - Sat, Feb 7
Frontier Logo
6:18 pm - 3:07 pm
MIA
-
ONT
23h 49m1 stop
Frontier Logo
6:20 am - 4:37 pm
ONT
-
MIA
7h 17m1 stop
$183Frontier
Tue, Jan 20 - Thu, Jan 22
Frontier Logo
6:18 pm - 11:24 pm
MIA
-
ONT
8h 06m1 stop
Frontier Logo
7:15 am - 5:12 pm
ONT
-
MIA
6h 57m1 stop
$185Frontier
Sat, Jan 24 - Wed, Jan 28
Frontier Logo
1:07 pm - 11:56 pm
MIA
-
ONT
13h 49m1 stop
Frontier Logo
7:15 am - 5:18 am
ONT
-
MIA
19h 03m1 stop
$204Frontier
Mon, Jan 12 - Sat, Jan 17
Multiple Airlines Logo
4:01 pm - 7:26 am
MIA
-
ONT
18h 25m1 stop
Multiple Airlines Logo
10:18 pm - 8:51 pm
ONT
-
MIA
19h 33m2 stops
$207Multiple Airlines
Fri, Feb 20 - Sun, Feb 22
Frontier Logo
9:25 am - 10:59 pm
MIA
-
ONT
16h 34m1 stop
Frontier Logo
6:20 am - 11:59 pm
ONT
-
MIA
14h 39m1 stop
$210Frontier
Sat, Jan 17 - Fri, Jan 23
Frontier Logo
7:45 am - 2:23 pm
MIA
-
ONT
9h 38m1 stop
Frontier Logo
6:20 am - 4:37 pm
ONT
-
MIA
7h 17m1 stop
$211Frontier
Sun, Jan 18 - Thu, Jan 22
Frontier Logo
5:45 am - 9:34 pm
MIA
-
ONT
18h 49m1 stop
Frontier Logo
6:00 am - 5:14 am
ONT
-
MIA
20h 14m1 stop
$214Frontier
Tue, Feb 24 - Sat, Feb 28

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets
Frontier
Jan 24
MIA6:18 pmMiami
8h 06m
1 stop
ONT11:24 pmOntario
Jan 31
ONT7:15 amOntario
6h 57m
1 stop
MIA5:12 pmMiami
$150
Find similar
Frontier
Feb 5
MIA5:47 pmMiami
9h 33m
1 stop
ONT12:20 amOntario
Feb 10
ONT8:36 amOntario
18h 12m
1 stop
MIA5:48 amMiami
$168
Find similar
Frontier
Jan 29
MIA5:47 pmMiami
9h 33m
1 stop
ONT12:20 amOntario
Feb 7
ONT7:15 amOntario
6h 57m
1 stop
MIA5:12 pmMiami
$182
Find similar

United Airlines flights from Miami to Ontario

Our best United Airlines deals on Miami to Ontario flight tickets
United Airlines
Jan 9
MIA4:51 pmMiami
8h 07m
1 stop
ONT9:58 pmOntario
Jan 11
ONT6:39 pmOntario
14h 59m
2 stops
MIA12:38 pmMiami
$442
Find similar
United Airlines
Jan 9
MIA7:15 amMiami
8h 33m
1 stop
ONT12:48 pmOntario
Jan 11
ONT6:00 amOntario
9h 25m
1 stop
MIA6:25 pmMiami
$477
Find similar
United Airlines
Jan 9
MIA4:51 pmMiami
8h 07m
1 stop
ONT9:58 pmOntario
Jan 11
ONT6:39 pmOntario
14h 59m
2 stops
MIA12:38 pmMiami
$482
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Miami to Ontario 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 December 28, 2025.
Use the filters below to find and compare flights from Miami to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 1/24

6:18 pm-11:24 pm

1 stop8h 06m

Ontario

Sat 1/31

7:15 am-5:12 pm

1 stop6h 57m

$150

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 2/5

5:47 pm-12:20 am

1 stop9h 33m

Ontario

Tue 2/10

8:36 am-5:48 am

1 stop18h 12m

$168

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 1/29

5:47 pm-12:20 am

1 stop9h 33m

Ontario

Sat 2/7

7:15 am-5:12 pm

1 stop6h 57m

$182

MiamiOntario

MIA - ONT

MIAONT

Miami

Tue 1/20

6:18 pm-3:07 pm

1 stop23h 49m

Ontario

Thu 1/22

6:20 am-4:37 pm

1 stop7h 17m

$183

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 1/24

6:18 pm-11:24 pm

1 stop8h 06m

Ontario

Wed 1/28

7:15 am-5:12 pm

1 stop6h 57m

$185

MiamiOntario

MIA - ONT

MIAONT

Miami

Mon 1/12

1:07 pm-11:56 pm

1 stop13h 49m

Ontario

Sat 1/17

7:15 am-5:18 am

1 stop19h 03m

$204

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 2/20

4:01 pm-7:26 am

1 stop18h 25m

Ontario

Sun 2/22

10:18 pm-8:51 pm

2 stops19h 33m

$207

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 1/17

9:25 am-10:59 pm

1 stop16h 34m

Ontario

Fri 1/23

6:20 am-11:59 pm

1 stop14h 39m

$210

MiamiOntario

MIA - ONT

MIAONT

Miami

Sun 1/18

7:45 am-2:23 pm

1 stop9h 38m

Ontario

Thu 1/22

6:20 am-4:37 pm

1 stop7h 17m

$211

MiamiOntario

MIA - ONT

MIAONT

Miami

Tue 2/24

5:45 am-9:34 pm

1 stop18h 49m

Ontario

Sat 2/28

6:00 am-5:14 am

1 stop20h 14m

$214

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 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, February 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 $298. If you aren’t able to travel during the month of February, then book flights to Ontario from Miami during January instead. Flights to Ontario in January, while not as cheap as those in February, still average around $326.

How have Miami to Ontario flight prices changed over time?

As of December 2025, prices for Miami to Ontario flights are approximately 73% more expensive 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

Fastest flight time

7h 33m

Direct flights

None
The fastest flight from Miami to Ontario takes 7h 33m
There are no direct flights from Miami to Ontario. There are no popular flight routes from Miami to Ontario.
Search flight deals

  • How far is Miami to Ontario by plane?

    A flight from Miami to Ontario will travel around 2299.8 mi. 7h 33m 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 $170Free CancellationRating
5.7
3,065 reviews
Search Frontier flights
DeltaPriceFrom $253Free CancellationRating
7.9
8,019 reviews
Search Delta flights
American AirlinesPriceFrom $298Free CancellationRating
7.2
11,072 reviews
Search American Airlines flights
United AirlinesPriceFrom $336Free CancellationRating
7.4
9,113 reviews
Search United Airlines flights
SouthwestPriceFrom $392Free CancellationRating
8.0
4,256 reviews
Search Southwest 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.

An easier way to manage your Ontario 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.
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