$131+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ONT
Jul 8 — Jul 151
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Miami to Ontario
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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 June 8, 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 June 8, 2026.
This Frontier deal was found by Cheapflights users on 6/7. 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 7/1410:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sat 7/183:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/7![Frontier logo]()
$264
This Booking.com deal was found by Cheapflights users on 6/7. 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 8/56:00 am
MIA
- ONT
1 stop20h 50m
Frontier
Wed 8/1910:50 am
ONT
- MIA
1 stop16h 04m
Frontier
Deal found 6/7![Frontier logo]()
$266
This Frontier deal was found by Cheapflights users on 6/6. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Tue 7/73:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/6![Frontier logo]()
$271
This Booking.com deal was found by Cheapflights users on 6/6. 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 7/810:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sun 7/266:00 am
ONT
- MIA
1 stop20h 51m
Frontier
Deal found 6/6![Frontier logo]()
$273
This CheapOair deal was found by Cheapflights users on 6/7. 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 8/199:35 am
MIA
- ONT
1 stop11h 17m
Frontier
Tue 8/2510:50 am
ONT
- MIA
1 stop16h 04m
Frontier
Deal found 6/7![Frontier logo]()
$274
This Frontier deal was found by Cheapflights users on 6/8. 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 7/210:11 pm
MIA
- ONT
1 stop19h 57m
Frontier
Wed 7/89:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/8![Frontier logo]()
$275
This Frontier deal was found by Cheapflights users on 6/7. 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.
Fri 7/1010:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sat 7/189:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/7![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 6/3. 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.
Fri 7/36:20 am
MIA
- ONT
1 stop13h 28m
Frontier
Fri 7/109:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/3![Frontier logo]()
$277
This Frontier deal was found by Cheapflights users on 6/6. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Mon 7/63:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/6![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 6/6. 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.
Fri 7/1710:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Mon 7/203:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/6![Frontier logo]()
$279
This Booking.com deal was found by Cheapflights users on 6/6. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Fri 7/35:43 pm
ONT
- MIA
1 stop27h 58m
Frontier
Deal found 6/6![Frontier logo]()
$280
This Booking.com deal was found by Cheapflights users on 6/6. 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.
Fri 7/36:20 am
MIA
- ONT
1 stop13h 28m
Frontier
Mon 7/63:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/6![Frontier logo]()
$281
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 June 8, 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 June 8, 2026.
This Delta deal was found by Cheapflights users on 6/6. 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 9/56:00 am
MIA
- ONT
1 stop7h 42m
Delta
Sun 9/65:05 pm
ONT
- MIA
1 stop9h 55m
Delta
Deal found 6/6![Delta logo]()
$430
This Southwest deal was found by Cheapflights users on 6/5. 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.
Thu 7/25:10 am
MIA
- ONT
1 stop6h 45m
Southwest
Sun 7/510:15 pm
ONT
- MIA
2 stops14h 05m
Southwest
Deal found 6/5![Southwest logo]()
$488
This United Airlines deal was found by Cheapflights users on 6/3. 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 8/183:52 pm
MIA
- ONT
1 stop8h 01m
United Airlines
Wed 8/196:00 am
ONT
- MIA
1 stop8h 35m
United Airlines
Deal found 6/3![United Airlines logo]()
$557
This Delta deal was found by Cheapflights users on 6/4. 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 8/137:15 am
MIA
- ONT
1 stop7h 50m
Delta
Tue 8/1812:00 pm
ONT
- MIA
1 stop9h 47m
Delta
Deal found 6/4![Delta logo]()
$437
This Delta deal was found by Cheapflights users on 6/4. 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 stop7h 50m
Delta
Tue 8/185:05 pm
ONT
- MIA
1 stop9h 55m
Delta
Deal found 6/4![Delta logo]()
$437
This Southwest deal was found by Cheapflights users on 6/7. 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 7/105:00 pm
MIA
- ONT
2 stops9h 35m
Southwest
Mon 7/1311:55 pm
ONT
- MIA
2 stops11h 30m
Southwest
Deal found 6/7![Southwest logo]()
$508
This Delta deal was found by Cheapflights users on 6/6. 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 9/36:00 am
MIA
- ONT
1 stop7h 42m
Delta
Sun 9/65:05 pm
ONT
- MIA
1 stop9h 55m
Delta
Deal found 6/6![Delta logo]()
$447
This Southwest deal was found by Cheapflights users on 6/4. 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 7/36:20 am
MIA
- ONT
2 stops10h 30m
Southwest
Sun 7/510:15 pm
ONT
- MIA
2 stops14h 05m
Southwest
Deal found 6/4![Southwest logo]()
$513
This United Airlines deal was found by Cheapflights users on 6/5. 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.
Mon 6/227:37 am
MIA
- ONT
1 stop8h 10m
United Airlines
Fri 6/261:18 pm
ONT
- MIA
1 stop7h 41m
United Airlines
Deal found 6/5![United Airlines logo]()
$567
This Delta deal was found by Cheapflights users on 6/5. 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 9/56:00 am
MIA
- ONT
1 stop7h 42m
Delta
Mon 9/710:00 pm
ONT
- MIA
1 stop9h 59m
Delta
Deal found 6/5![Delta logo]()
$447
This Southwest deal was found by Cheapflights users on 6/7. 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 7/184:40 pm
MIA
- ONT
2 stops9h 15m
Southwest
Tue 7/215:15 am
ONT
- MIA
2 stops9h 00m
Southwest
Deal found 6/7![Southwest logo]()
$514
This Delta deal was found by Cheapflights users on 6/6. 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.
Mon 8/177:15 am
MIA
- ONT
1 stop8h 01m
Delta
Tue 8/185:05 pm
ONT
- MIA
1 stop9h 55m
Delta
Deal found 6/6![Delta logo]()
$503
Last-minute flights from Miami to OntarioDiscover last-minute flight deals from Miami to Ontario. Data last updated June 8, 2026 and is based on user searches.
Discover last-minute flight deals from Miami to Ontario. Data last updated June 8, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/6. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Tue 7/73:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/6![Frontier logo]()
$271
This Frontier deal was found by Cheapflights users on 6/7. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Tue 7/289:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/7![Frontier logo]()
$274
This Frontier deal was found by Cheapflights users on 6/8. 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 7/210:11 pm
MIA
- ONT
1 stop19h 57m
Frontier
Wed 7/89:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/8![Frontier logo]()
$275
This Booking.com deal was found by Cheapflights users on 6/6. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Fri 7/35:43 pm
ONT
- MIA
1 stop27h 58m
Frontier
Deal found 6/6![Frontier logo]()
$280
This Frontier deal was found by Cheapflights users on 6/7. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Sun 7/53:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/7![Frontier logo]()
$288
This Frontier deal was found by Cheapflights users on 6/3. 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.
Fri 7/36:20 am
MIA
- ONT
1 stop13h 28m
Frontier
Fri 7/109:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/3![Frontier logo]()
$277
This Expedia deal was found by Cheapflights users on 6/6. 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.
Fri 7/36:20 am
MIA
- ONT
1 stop13h 28m
Frontier
Sun 7/53:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/6![Frontier logo]()
$278
This Booking.com deal was found by Cheapflights users on 6/6. 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.
Fri 7/36:20 am
MIA
- ONT
1 stop13h 28m
Frontier
Sat 7/411:58 am
ONT
- MIA
1 stop16h 13m
Frontier
Deal found 6/6![Frontier logo]()
$281
This Booking.com deal was found by Cheapflights users on 6/6. 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 7/810:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sun 7/266:00 am
ONT
- MIA
1 stop20h 51m
Frontier
Deal found 6/6![Frontier logo]()
$273
This Frontier deal was found by Cheapflights users on 6/7. 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.
Fri 7/1010:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sat 7/189:32 am
ONT
- MIA
1 stop11h 59m
Frontier
Deal found 6/7![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 6/7. 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 7/1410:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Sat 7/183:40 pm
ONT
- MIA
1 stop11h 50m
Frontier
Deal found 6/7![Frontier logo]()
$264
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 June 8, 2026.
Search for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated June 8, 2026.
This Super.com deal was found by Cheapflights users on 6/7. 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 6/7![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 6/6. 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 11/147:20 am
MIA
- ONT
1 stop9h 20m
Frontier
Deal found 6/6![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 6/7. 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 7/810:15 pm
MIA
- ONT
1 stop20h 39m
Frontier
Deal found 6/7![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 6/6. 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 8/226:00 am
MIA
- ONT
1 stop13h 48m
Frontier
Deal found 6/6![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 6/7. 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 8/1210:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 6/7![Frontier logo]()
$138
This Frontier deal was found by Cheapflights users on 6/5. 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 9/26:00 am
MIA
- ONT
1 stop13h 48m
Frontier
Deal found 6/5![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 6/3. 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 10/77:20 am
MIA
- ONT
1 stop9h 37m
Frontier
Deal found 6/3![Frontier logo]()
$140
This Super.com deal was found by Cheapflights users on 6/6. 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.
Sun 7/510:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 6/6![Frontier logo]()
$142
This Super.com deal was found by Cheapflights users on 6/6. 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 7/36:20 am
MIA
- ONT
1 stop13h 28m
Frontier
Deal found 6/6![Frontier logo]()
$143
This Super.com deal was found by Cheapflights users on 6/3. 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 7/610:15 pm
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 6/3![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 6/4. 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 7/27:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 6/4![Frontier logo]()
$145
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 June 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $264 (Expedia) |
One-way from | $131 (Super.com) |
Popular in | November |
Cheapest in | August |
Average price | $341 |
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 June 8, 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 9/5
6:00 am-10:42 am
1 stop7h 42m
Ontario
Sun 9/6
5:05 pm-6:00 am
1 stop9h 55m
$430
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 8/13
7:15 am-12:05 pm
1 stop7h 50m
Ontario
Tue 8/18
12:00 pm-12:47 am
1 stop9h 47m
$437
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 8/14
7:15 am-12:05 pm
1 stop7h 50m
Ontario
Tue 8/18
5:05 pm-6:00 am
1 stop9h 55m
$437
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 9/3
6:00 am-10:42 am
1 stop7h 42m
Ontario
Sun 9/6
5:05 pm-6:00 am
1 stop9h 55m
$447
MiamiOntario
MIA - ONT
MIAONT
Miami
Sat 9/5
6:00 am-10:42 am
1 stop7h 42m
Ontario
Mon 9/7
10:00 pm-10:59 am
1 stop9h 59m
$447
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 7/2
5:10 am-8:55 am
1 stop6h 45m
Ontario
Sun 7/5
10:15 pm-3:20 pm
2 stops14h 05m
$488
MiamiOntario
MIA - ONT
MIAONT
Miami
Mon 8/17
7:15 am-12:16 pm
1 stop8h 01m
Ontario
Tue 8/18
5:05 pm-6:00 am
1 stop9h 55m
$503
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 7/10
5:00 pm-11:35 pm
2 stops9h 35m
Ontario
Mon 7/13
11:55 pm-2:25 pm
2 stops11h 30m
$508
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 7/3
6:20 am-1:50 pm
2 stops10h 30m
Ontario
Sun 7/5
10:15 pm-3:20 pm
2 stops14h 05m
$513
MiamiOntario
MIA - ONT
MIAONT
Miami
Sat 7/18
4:40 pm-10:55 pm
2 stops9h 15m
Ontario
Tue 7/21
5:15 am-5:15 pm
2 stops9h 00m
$514
Showing 1-10 of 24 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 June.
| 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 $512). 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 June 8, 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.
Overall
7.9
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
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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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 June 8, 2026.
Miami and Ontario flights
Browse other Miami and Ontario flight options. Last updated on June 8, 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 June 8, 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 June 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$305 | 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 |