$79+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ONT
May 23 — May 301
Round-trip
1 adult, Economy
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Find cheap flights from Miami to Ontario with Cheapflights
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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 April 23, 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 April 23, 2026.
This CheapOair deal was found by Cheapflights users on 4/20. 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 5/136:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/20![Frontier logo]()
$160
This Booking.com deal was found by Cheapflights users on 4/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Sun 5/178:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/18![Frontier logo]()
$162
This Mytrip deal was found by Cheapflights users on 4/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:30 am
MIA
- ONT
1 stop13h 34m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/18![Frontier logo]()
$172
This CheapOair deal was found by Cheapflights users on 4/21. 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.
Mon 5/116:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Thu 5/148:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/21![Frontier logo]()
$180
This Booking.com deal was found by Cheapflights users on 4/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/19![Frontier logo]()
$187
This Mytrip deal was found by Cheapflights users on 4/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Sun 5/108:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/19![Frontier logo]()
$192
This Booking.com deal was found by Cheapflights users on 4/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:30 am
MIA
- ONT
1 stop13h 34m
Frontier
Thu 5/148:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/22![Frontier logo]()
$193
This Booking.com deal was found by Cheapflights users on 4/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/219:15 am
MIA
- ONT
1 stop24h 53m
Frontier
Sat 5/235:59 pm
ONT
- MIA
1 stop27h 45m
Frontier
Deal found 4/20![Frontier logo]()
$198
This Expedia deal was found by Cheapflights users on 4/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 am
MIA
- ONT
1 stop19h 55m
Frontier
Tue 5/58:30 am
ONT
- MIA
1 stop8h 27m
Frontier
Deal found 4/18![Frontier logo]()
$200
This Trip.com deal was found by Cheapflights users on 4/22. 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 5/146:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/22![Frontier logo]()
$201
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 April 23, 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 April 23, 2026.
This Delta deal was found by Cheapflights users on 4/22. 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.
Tue 5/197:00 am
MIA
- ONT
1 stop8h 19m
Delta
Tue 6/212:07 pm
ONT
- MIA
1 stop9h 36m
Delta
Deal found 4/22![Delta logo]()
$257
This Delta deal was found by Cheapflights users on 4/22. 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 5/217:00 am
MIA
- ONT
1 stop8h 19m
Delta
Tue 6/210:00 pm
ONT
- MIA
1 stop8h 29m
Delta
Deal found 4/22![Delta logo]()
$307
This Delta deal was found by Cheapflights users on 4/17. 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.
Wed 6/247:00 am
MIA
- ONT
1 stop8h 10m
Delta
Mon 6/295:24 pm
ONT
- MIA
1 stop9h 18m
Delta
Deal found 4/17![Delta logo]()
$342
This Delta deal was found by Cheapflights users on 4/18. 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 7/177:10 am
MIA
- ONT
2 stops12h 25m
Delta
Tue 7/2111:48 am
ONT
- MIA
1 stop10h 07m
Delta
Deal found 4/18![Delta logo]()
$347
This Delta deal was found by Cheapflights users on 4/19. 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 5/87:00 am
MIA
- ONT
1 stop8h 19m
Delta
Sat 5/912:07 pm
ONT
- MIA
1 stop6h 53m
Delta
Deal found 4/19![Delta logo]()
$378
This Delta deal was found by Cheapflights users on 4/18. 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 6/56:00 am
MIA
- ONT
1 stop7h 57m
Delta
Sun 6/1410:00 pm
ONT
- MIA
1 stop8h 33m
Delta
Deal found 4/18![Delta logo]()
$418
This Delta deal was found by Cheapflights users on 4/21. 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 5/104:05 pm
MIA
- ONT
1 stop8h 43m
Delta
Tue 5/1910:00 pm
ONT
- MIA
1 stop8h 29m
Delta
Deal found 4/21![Delta logo]()
$418
This Delta deal was found by Cheapflights users on 4/20. 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 5/226:00 am
MIA
- ONT
1 stop7h 57m
Delta
Sat 5/2312:07 pm
ONT
- MIA
1 stop9h 36m
Delta
Deal found 4/20![Delta logo]()
$418
This Delta deal was found by Cheapflights users on 4/22. 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 5/217:00 am
MIA
- ONT
1 stop8h 19m
Delta
Sat 5/3012:07 pm
ONT
- MIA
1 stop9h 41m
Delta
Deal found 4/22![Delta logo]()
$418
This Delta deal was found by Cheapflights users on 4/18. 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 6/66:00 am
MIA
- ONT
1 stop7h 57m
Delta
Sun 6/1410:00 pm
ONT
- MIA
1 stop8h 33m
Delta
Deal found 4/18![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 4/20. 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 7/177:00 am
MIA
- ONT
1 stop8h 08m
Delta
Mon 7/2710:00 pm
ONT
- MIA
1 stop8h 30m
Delta
Deal found 4/20![Delta logo]()
$464
Last-minute flights from Miami to OntarioDiscover last-minute flight deals from Miami to Ontario. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Miami to Ontario. Data last updated April 23, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 4/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 am
MIA
- ONT
1 stop19h 55m
Frontier
Tue 5/58:30 am
ONT
- MIA
1 stop8h 27m
Frontier
Deal found 4/18![Frontier logo]()
$200
This Booking.com deal was found by Cheapflights users on 4/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/19![Frontier logo]()
$187
This Mytrip deal was found by Cheapflights users on 4/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Sun 5/108:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/19![Frontier logo]()
$192
This Mytrip deal was found by Cheapflights users on 4/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:30 am
MIA
- ONT
1 stop13h 34m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/18![Frontier logo]()
$172
This Booking.com deal was found by Cheapflights users on 4/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:30 am
MIA
- ONT
1 stop13h 34m
Frontier
Thu 5/148:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/22![Frontier logo]()
$193
This Jetabroad deal was found by Cheapflights users on 4/20. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Thu 5/148:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/20![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 4/20. 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 5/136:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/20![Frontier logo]()
$160
This Booking.com deal was found by Cheapflights users on 4/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Sun 5/178:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/18![Frontier logo]()
$162
This Trip.com deal was found by Cheapflights users on 4/22. 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 5/146:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Sat 5/166:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/22![Frontier logo]()
$201
This Booking.com deal was found by Cheapflights users on 4/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/219:15 am
MIA
- ONT
1 stop24h 53m
Frontier
Sat 5/235:59 pm
ONT
- MIA
1 stop27h 45m
Frontier
Deal found 4/20![Frontier logo]()
$198
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 April 23, 2026.
Search for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Super.com deal was found by Cheapflights users on 4/19. 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.
Tue 5/2612:39 pm
MIA
- ONT
1 stop9h 32m
Frontier
Deal found 4/19![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 4/20. 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.
Mon 5/116:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Deal found 4/20![Frontier logo]()
$85
This CheapOair deal was found by Cheapflights users on 4/21. 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 5/156:00 am
MIA
- ONT
1 stop29h 20m
Frontier
Deal found 4/21![Frontier logo]()
$86
This Trip.com deal was found by Cheapflights users on 4/20. 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.
Fri 5/16:30 am
MIA
- ONT
1 stop13h 08m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$98
This Super.com deal was found by Cheapflights users on 4/22. 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.
Thu 5/76:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Deal found 4/22![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 4/19. 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 5/66:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Deal found 4/19![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 4/21. 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.
Tue 6/2310:06 pm
MIA
- ONT
1 stop20h 02m
Frontier
Deal found 4/21![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 4/20. 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.
Thu 5/146:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Deal found 4/20![Frontier logo]()
$110
This CheapOair deal was found by Cheapflights users on 4/18. 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 5/279:15 am
MIA
- ONT
1 stop24h 53m
Frontier
Deal found 4/18![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 4/19. 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 6/306:50 am
MIA
- ONT
1 stop12h 58m
Frontier
Deal found 4/19![Frontier logo]()
$112
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 April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (CheapOair) |
One-way from | $79 (Super.com) |
Popular in | November |
Cheapest in | August |
Average price | $361 |
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 April 23, 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
Tue 5/19
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Tue 6/2
12:07 pm-12:43 am
1 stop9h 36m
$257
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 5/21
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Tue 6/2
10:00 pm-9:29 am
1 stop8h 29m
$307
MiamiOntario
MIA - ONT
MIAONT
Miami
Wed 6/24
7:00 am-12:10 pm
1 stop8h 10m
Ontario
Mon 6/29
5:24 pm-5:42 am
1 stop9h 18m
$342
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 7/17
7:10 am-4:35 pm
2 stops12h 25m
Ontario
Tue 7/21
11:48 am-12:55 am
1 stop10h 07m
$347
Quickest round-trip
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 5/8
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Sat 5/9
12:07 pm-10:00 pm
1 stop6h 53m
$378
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 6/5
6:00 am-10:57 am
1 stop7h 57m
Ontario
Sun 6/14
10:00 pm-9:33 am
1 stop8h 33m
$418
MiamiOntario
MIA - ONT
MIAONT
Miami
Sun 5/10
4:05 pm-9:48 pm
1 stop8h 43m
Ontario
Tue 5/19
10:00 pm-9:29 am
1 stop8h 29m
$418
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 5/22
6:00 am-10:57 am
1 stop7h 57m
Ontario
Sat 5/23
12:07 pm-12:43 am
1 stop9h 36m
$418
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 5/21
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Sat 5/30
12:07 pm-12:48 am
1 stop9h 41m
$418
MiamiOntario
MIA - ONT
MIAONT
Miami
Sat 6/6
6:00 am-10:57 am
1 stop7h 57m
Ontario
Sun 6/14
10:00 pm-9:33 am
1 stop8h 33m
$439
Showing 1-10 of 23 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 April.
| 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 $508). 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 April 23, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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.
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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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Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Other flights from Miami
Popular flights
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 April 23, 2026.
Miami and Ontario flights
Browse other Miami and Ontario flight options. Last updated on April 23, 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 April 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Miami to Ontario
Discover the top 4 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 April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$374 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$326 | Average$508 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$336 | Average$416 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$365 | Average$478 | FlexibilityNo cancel fee | On-timeN/A |