$111+ Cheap flights from Miami to Ontario (MIA - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ONT
Jul 31 — Aug 71
Round-trip
1 adult, Economy
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Find cheap flights from Miami to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Miami to OntarioExplore the most affordable flight options available from Miami to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.
Explore the most affordable flight options available from Miami to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:30 am
MIA
- ONT
1 stop28h 02m
Frontier
Sat 8/159:36 am
ONT
- MIA
1 stop11h 45m
Frontier
Deal found 7/1![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
MIA
- ONT
1 stop14h 01m
Frontier
Thu 8/209:33 am
ONT
- MIA
1 stop11h 22m
Frontier
Deal found 6/30![Frontier logo]()
$255
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Wed 8/59:36 am
ONT
- MIA
1 stop11h 45m
Frontier
Deal found 6/28![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:30 am
MIA
- ONT
1 stop28h 02m
Frontier
Tue 8/49:36 am
ONT
- MIA
1 stop11h 55m
Frontier
Deal found 6/30![Frontier logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:00 am
MIA
- ONT
1 stop14h 01m
Frontier
Mon 8/249:33 am
ONT
- MIA
1 stop26h 00m
Frontier
Deal found 6/29![Frontier logo]()
$260
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/110:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Wed 8/55:08 pm
ONT
- MIA
1 stop10h 22m
Frontier
Deal found 6/28![Frontier logo]()
$264
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Wed 8/55:08 pm
ONT
- MIA
1 stop10h 22m
Frontier
Deal found 6/28![Frontier logo]()
$265
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/810:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sat 8/154:09 pm
ONT
- MIA
1 stop11h 21m
Frontier
Deal found 6/30![Frontier logo]()
$266
This CheapOair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:00 am
MIA
- ONT
1 stop14h 01m
Frontier
Tue 8/257:56 pm
ONT
- MIA
1 stop29h 56m
Frontier
Deal found 6/30![Frontier logo]()
$274
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Thu 8/139:36 am
ONT
- MIA
1 stop11h 45m
Frontier
Deal found 6/28![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am
MIA
- ONT
1 stop20h 50m
Frontier
Wed 9/96:00 am
ONT
- MIA
1 stop20h 48m
Frontier
Deal found 6/26![Frontier logo]()
$277
Best flights from Miami to OntarioDiscover carefully curated flight deals from Miami to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2026.
Discover carefully curated flight deals from Miami to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2026.
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/157:15 am
MIA
- ONT
1 stop8h 01m
Delta
Sat 8/2912:00 pm
ONT
- MIA
1 stop9h 47m
Delta
Deal found 6/28![Delta logo]()
$403
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:30 am
MIA
- ONT
2 stops12h 55m
Southwest
Sun 9/135:35 am
ONT
- MIA
2 stops9h 10m
Southwest
Deal found 6/30![Southwest logo]()
$425
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:57 pm
MIA
- ONT
1 stop9h 38m
United Airlines
Wed 8/196:08 am
ONT
- MIA
1 stop8h 27m
United Airlines
Deal found 6/30![United Airlines logo]()
$513
This Alaska Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:22 pm
MIA
- ONT
2 stops24h 48m
Alaska Airlines
Tue 8/254:50 pm
ONT
- MIA
2 stops21h 29m
Alaska Airlines
Deal found 6/26![Alaska Airlines logo]()
$519
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:05 am
MIA
- ONT
1 stop8h 09m
Delta
Wed 10/145:05 pm
ONT
- MIA
1 stop10h 03m
Delta
Deal found 6/26![Delta logo]()
$415
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/205:00 pm
MIA
- ONT
2 stops9h 35m
Southwest
Tue 7/2811:55 pm
ONT
- MIA
2 stops11h 30m
Southwest
Deal found 6/26![Southwest logo]()
$425
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:15 am
MIA
- ONT
1 stop8h 01m
Delta
Sat 8/295:05 pm
ONT
- MIA
1 stop9h 55m
Delta
Deal found 6/28![Delta logo]()
$415
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:15 am
MIA
- ONT
1 stop8h 01m
Delta
Sun 9/2012:17 pm
ONT
- MIA
1 stop7h 16m
Delta
Deal found 6/30![Delta logo]()
$469
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:20 pm
MIA
- ONT
2 stops10h 15m
Southwest
Mon 7/2711:55 pm
ONT
- MIA
2 stops11h 30m
Southwest
Deal found 6/29![Southwest logo]()
$523
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:00 am
MIA
- ONT
1 stop7h 42m
Delta
Sat 8/1512:00 pm
ONT
- MIA
1 stop9h 47m
Delta
Deal found 6/30![Delta logo]()
$483
Last-minute flights from Miami to OntarioDiscover last-minute flight deals from Miami to Ontario. Data last updated July 1, 2026 and is based on user searches.
Discover last-minute flight deals from Miami to Ontario. Data last updated July 1, 2026 and is based on user searches.
This Vliegwinkel deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:00 am
MIA
- ONT
1 stop20h 50m
Frontier
Sat 7/259:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/28![Frontier logo]()
$281
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Wed 8/125:08 pm
ONT
- MIA
1 stop10h 22m
Frontier
Deal found 7/1![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Wed 7/2910:49 am
ONT
- MIA
1 stop16h 02m
Frontier
Deal found 6/28![Frontier logo]()
$277
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2510:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sat 8/19:36 am
ONT
- MIA
1 stop11h 55m
Frontier
Deal found 6/30![Frontier logo]()
$278
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Wed 8/59:36 am
ONT
- MIA
1 stop11h 45m
Frontier
Deal found 6/28![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:30 am
MIA
- ONT
1 stop28h 02m
Frontier
Tue 8/49:36 am
ONT
- MIA
1 stop11h 55m
Frontier
Deal found 6/30![Frontier logo]()
$259
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Wed 8/55:08 pm
ONT
- MIA
1 stop10h 22m
Frontier
Deal found 6/29![Frontier logo]()
$264
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:30 am
MIA
- ONT
1 stop28h 02m
Frontier
Tue 8/49:36 am
ONT
- MIA
1 stop11h 55m
Frontier
Deal found 6/28![Frontier logo]()
$274
This CheapOair deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3110:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Tue 8/1810:59 am
ONT
- MIA
1 stop24h 34m
Frontier
Deal found 6/28![Frontier logo]()
$286
One-way flights from Miami to OntarioSearch for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
Search for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This Trip.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:59 am
MIA
- ONT
1 stop12h 02m
Frontier
Deal found 6/30![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:20 am
MIA
- ONT
1 stop9h 37m
Frontier
Deal found 6/29![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:20 am
MIA
- ONT
1 stop9h 37m
Frontier
Deal found 6/29![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/810:15 pm
MIA
- ONT
1 stop20h 39m
Frontier
Deal found 6/28![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/110:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 7/1![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:30 am
MIA
- ONT
1 stop28h 02m
Frontier
Deal found 6/30![Frontier logo]()
$139
This Trip.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:20 am
MIA
- ONT
1 stop19h 35m
Frontier
Deal found 7/1![Frontier logo]()
$141
This Priceline deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:00 am
MIA
- ONT
1 stop9h 37m
Frontier
Deal found 6/30![Frontier logo]()
$144
This Super.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3110:15 pm
MIA
- ONT
1 stop19h 59m
Frontier
Deal found 6/30![Frontier logo]()
$147
This Super.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/710:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 6/29![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 6/28![Frontier logo]()
$150
Find flight deals from Miami to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Miami (MIA) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $232 (Kiwi.com) |
One-way from | $111 (Trip.com) |
Popular in | November |
Cheapest in | August |
Average price | $374 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 1, 2026.
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
Cheapest round-trip
MiamiOntario
MIA - ONT
MIAONT
Miami
Sat 8/15
7:15 am-12:16 pm
1 stop8h 01m
Ontario
Sat 8/29
12:00 pm-12:47 am
1 stop9h 47m
$403
MiamiOntario
MIA - ONT
MIAONT
Miami
Sun 9/27
7:05 am-12:14 pm
1 stop8h 09m
Ontario
Wed 10/14
5:05 pm-6:08 am
1 stop10h 03m
$415
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 8/14
7:15 am-12:16 pm
1 stop8h 01m
Ontario
Sat 8/29
5:05 pm-6:00 am
1 stop9h 55m
$415
MiamiOntario
MIA - ONT
MIAONT
Miami
Sat 9/12
6:30 am-4:25 pm
2 stops12h 55m
Ontario
Sun 9/13
5:35 am-5:45 pm
2 stops9h 10m
$425
MiamiOntario
MIA - ONT
MIAONT
Miami
Mon 7/20
5:00 pm-11:35 pm
2 stops9h 35m
Ontario
Tue 7/28
11:55 pm-2:25 pm
2 stops11h 30m
$425
Quickest round-trip
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 9/3
7:15 am-12:16 pm
1 stop8h 01m
Ontario
Sun 9/20
12:17 pm-10:33 pm
1 stop7h 16m
$469
MiamiOntario
MIA - ONT
MIAONT
Miami
Sat 8/8
6:00 am-10:42 am
1 stop7h 42m
Ontario
Sat 8/15
12:00 pm-12:47 am
1 stop9h 47m
$483
MiamiOntario
MIA - ONT
MIAONT
Miami
Tue 8/18
3:57 pm-10:35 pm
1 stop9h 38m
Ontario
Wed 8/19
6:08 am-5:35 pm
1 stop8h 27m
$513
MiamiOntario
MIA - ONT
MIAONT
Miami
Wed 8/19
6:22 pm-4:10 pm
2 stops24h 48m
Ontario
Tue 8/25
4:50 pm-5:19 pm
2 stops21h 29m
$519
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 7/24
4:20 pm-11:35 pm
2 stops10h 15m
Ontario
Mon 7/27
11:55 pm-2:25 pm
2 stops11h 30m
$523
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Miami to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Miami to Ontario in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Miami-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Miami-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Miami-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Miami-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Miami-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Miami to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Miami with our price prediction graph.
MIA-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Miami to Ontario
Prices
Delays
What is the cheapest month to book a flight from Miami to Ontario?
Currently, August is the cheapest month in which you can book a flight from Miami to Ontario (average of $336). Flying from Miami to Ontario in November is currently the most expensive (average of $517). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Miami to Ontario?
How often are flights from Miami to Ontario delayed?
About 0% of weekly flights between Miami and Ontario have experienced delays in the past year, with the average delay time being 0 minutes.
What is the most punctual flight time for Miami to Ontario flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated July 1, 2026.
Read reviews from past customers who have flown Southwest,Delta, andAmerican Airlines from Miami to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Miami to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Ontario flight routes
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Alternative routes for Miami to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Miami to Ontario by cabin class
Find flights from Miami to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 1, 2026.
Miami and Ontario flights
Browse other Miami and Ontario flight options. Last updated on July 1, 2026.
Other flights from Miami
Browse through other flights departing from Miami. Flights are based on user searches made on Cheapflights and were last updated on July 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Miami to Ontario
Discover the top 3 airlines that operate flights from Miami to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$376 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$326 | Average$508 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$341 | Average$478 | FlexibilityNo cancel fee | On-timeN/A |