$103+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ONT
Jun 2 — Jun 91
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 May 3, 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 May 3, 2026.
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Tue 5/196:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/29![Frontier logo]()
$190
This Gotogate deal was found by Cheapflights users on 4/30. 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 Gotogate 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 5/165:59 pm
ONT
- MIA
1 stop27h 45m
Frontier
Deal found 4/30![Frontier logo]()
$200
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Wed 6/105:43 pm
ONT
- MIA
1 stop27h 29m
Frontier
Deal found 4/30![Frontier logo]()
$210
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Sun 5/248:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/30![Frontier logo]()
$211
This CheapOair deal was found by Cheapflights users on 4/30. 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 5/276:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Mon 6/18:06 pm
ONT
- MIA
1 stop17h 21m
Frontier
Deal found 4/30![Frontier logo]()
$215
This Trip.com deal was found by Cheapflights users on 4/30. 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.
Thu 5/146:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Tue 5/196:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/30![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Thu 5/142:25 pm
MIA
- ONT
1 stop20h 10m
Multiple Airlines
Mon 5/188:06 pm
ONT
- MIA
2 stops38h 14m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$217
This CheapOair deal was found by Cheapflights users on 5/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Sun 5/318:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 5/1![Frontier logo]()
$220
This CheapOair deal was found by Cheapflights users on 4/30. 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 8/198:18 pm
MIA
- ONT
1 stop26h 30m
Frontier
Tue 8/253:34 pm
ONT
- MIA
1 stop12h 42m
Frontier
Deal found 4/30![Frontier logo]()
$221
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1010:06 pm
MIA
- ONT
1 stop20h 02m
Frontier
Wed 7/85:43 pm
ONT
- MIA
1 stop27h 38m
Frontier
Deal found 4/28![Frontier logo]()
$223
This Frontier deal was found by Cheapflights users on 5/1. 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.
Wed 7/17:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Tue 7/73:40 pm
ONT
- MIA
1 stop12h 46m
Frontier
Deal found 5/1![Frontier logo]()
$224
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sat 5/96:30 am
MIA
- ONT
1 stop13h 34m
Frontier
Sat 5/169:15 am
ONT
- MIA
1 stop9h 30m
Frontier
Deal found 4/29![Frontier logo]()
$225
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 May 3, 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 May 3, 2026.
This Delta deal was found by Cheapflights users on 4/29. 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 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 6/97:05 am
ONT
- MIA
1 stop8h 04m
Delta
Deal found 4/29![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:52 pm
MIA
- ONT
1 stop8h 06m
United Airlines
Tue 5/196:00 am
ONT
- MIA
1 stop9h 18m
United Airlines
Deal found 4/28![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 5/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:00 pm
MIA
- ONT
2 stops9h 30m
Southwest
Mon 7/2011:55 pm
ONT
- MIA
2 stops11h 30m
Southwest
Deal found 5/1![Southwest logo]()
$488
This Delta deal was found by Cheapflights users on 5/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:01 pm
MIA
- ONT
1 stop7h 35m
Delta
Sat 6/612:07 pm
ONT
- MIA
1 stop9h 36m
Delta
Deal found 5/1![Delta logo]()
$420
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:52 pm
MIA
- ONT
1 stop8h 06m
United Airlines
Sat 5/166:00 am
ONT
- MIA
1 stop9h 18m
United Airlines
Deal found 4/28![United Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 4/28. 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.
Mon 5/117:00 am
MIA
- ONT
1 stop8h 19m
Delta
Tue 5/2610:00 pm
ONT
- MIA
1 stop8h 29m
Delta
Deal found 4/28![Delta logo]()
$428
This Delta deal was found by Cheapflights users on 5/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:05 pm
MIA
- ONT
1 stop8h 43m
Delta
Wed 5/204:57 pm
ONT
- MIA
1 stop9h 48m
Delta
Deal found 5/1![Delta logo]()
$433
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:05 pm
MIA
- ONT
2 stops10h 29m
Delta
Fri 5/2910:00 pm
ONT
- MIA
2 stops17h 20m
Delta
Deal found 4/29![Delta logo]()
$462
This Delta deal was found by Cheapflights users on 4/29. 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 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
Wed 6/107:05 am
ONT
- MIA
1 stop8h 04m
Delta
Deal found 4/29![Delta logo]()
$466
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:00 am
MIA
- ONT
1 stop8h 19m
Delta
Sat 6/67:05 am
ONT
- MIA
1 stop8h 29m
Delta
Deal found 4/29![Delta logo]()
$468
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 5/274:05 pm
MIA
- ONT
1 stop8h 43m
Delta
Tue 6/210:00 pm
ONT
- MIA
1 stop8h 29m
Delta
Deal found 4/30![Delta logo]()
$503
Last-minute flights from Miami to OntarioDiscover last-minute flight deals from Miami to Ontario. Data last updated May 3, 2026 and is based on user searches.
Discover last-minute flight deals from Miami to Ontario. Data last updated May 3, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sat 5/96:30 am
MIA
- ONT
1 stop13h 34m
Frontier
Sat 5/169:15 am
ONT
- MIA
1 stop9h 30m
Frontier
Deal found 4/29![Frontier logo]()
$225
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:30 am
MIA
- ONT
1 stop20h 19m
Frontier
Tue 5/196:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/29![Frontier logo]()
$190
This Gotogate deal was found by Cheapflights users on 4/30. 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 Gotogate 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 5/165:59 pm
ONT
- MIA
1 stop27h 45m
Frontier
Deal found 4/30![Frontier logo]()
$200
This Trip.com deal was found by Cheapflights users on 4/30. 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.
Thu 5/146:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Tue 5/196:00 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 4/30![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Thu 5/142:25 pm
MIA
- ONT
1 stop20h 10m
Multiple Airlines
Mon 5/188:06 pm
ONT
- MIA
2 stops38h 14m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Fri 5/1511:24 am
MIA
- ONT
1 stop23h 56m
Multiple Airlines
Mon 5/188:06 pm
ONT
- MIA
2 stops38h 14m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$229
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Sun 5/248:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/30![Frontier logo]()
$211
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Sun 5/248:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/30![Frontier logo]()
$228
This CheapOair deal was found by Cheapflights users on 4/30. 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 5/276:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Mon 6/18:06 pm
ONT
- MIA
1 stop17h 21m
Frontier
Deal found 4/30![Frontier logo]()
$215
This CheapOair deal was found by Cheapflights users on 5/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:30 am
MIA
- ONT
1 stop30h 35m
Frontier
Sun 5/318:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 5/1![Frontier logo]()
$220
This Travelocity deal was found by Cheapflights users on 4/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:15 am
MIA
- ONT
1 stop24h 53m
Frontier
Thu 6/48:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Deal found 4/28![Frontier logo]()
$226
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 May 3, 2026.
Search for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated May 3, 2026.
This Trip.com deal was found by Cheapflights users on 4/28. 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 5/146:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Deal found 4/28![Frontier logo]()
$103
This Super.com deal was found by Cheapflights users on 4/30. 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 5/156:00 am
MIA
- ONT
1 stop29h 20m
Frontier
Deal found 4/30![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 4/30. 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.
Sun 5/248:03 pm
MIA
- ONT
1 stop15h 01m
Frontier
Deal found 4/30![Frontier logo]()
$110
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:06 pm
MIA
- ONT
1 stop20h 01m
Frontier
Deal found 4/29![Frontier logo]()
$111
This Trip.com deal was found by Cheapflights users on 5/1. 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 8/1110:06 pm
MIA
- ONT
1 stop20h 01m
Frontier
Deal found 5/1![Frontier logo]()
$113
This Super.com deal was found by Cheapflights users on 5/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:03 pm
MIA
- ONT
1 stop15h 01m
Frontier
Deal found 5/1![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Fri 5/1511:24 am
MIA
- ONT
1 stop23h 56m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$116
This Jetabroad deal was found by Cheapflights users on 4/29. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/299:15 am
MIA
- ONT
1 stop25h 33m
Frontier
Deal found 4/29![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/811:24 am
MIA
- ONT
1 stop23h 56m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$120
This Flightnetwork deal was found by Cheapflights users on 5/3. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:00 am
MIA
- ONT
1 stop12h 48m
Frontier
Deal found 5/3![Frontier logo]()
$124
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 May 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $200 (Gotogate) |
One-way from | $103 (Trip.com) |
Popular in | November |
Cheapest in | August |
Average price | $396 |
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 May 3, 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
Quickest round-trip
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 5/21
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Tue 6/9
7:05 am-6:09 pm
1 stop8h 04m
$357
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 5/28
2:01 pm-6:36 pm
1 stop7h 35m
Ontario
Sat 6/6
12:07 pm-12:43 am
1 stop9h 36m
$420
MiamiOntario
MIA - ONT
MIAONT
Miami
Mon 5/11
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Tue 5/26
10:00 pm-9:29 am
1 stop8h 29m
$428
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 5/15
4:05 pm-9:48 pm
1 stop8h 43m
Ontario
Wed 5/20
4:57 pm-5:45 am
1 stop9h 48m
$433
MiamiOntario
MIA - ONT
MIAONT
Miami
Tue 5/12
4:52 pm-9:58 pm
1 stop8h 06m
Ontario
Tue 5/19
6:00 am-6:18 pm
1 stop9h 18m
$437
MiamiOntario
MIA - ONT
MIAONT
Miami
Tue 5/12
4:52 pm-9:58 pm
1 stop8h 06m
Ontario
Sat 5/16
6:00 am-6:18 pm
1 stop9h 18m
$452
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 5/28
4:05 pm-11:34 pm
2 stops10h 29m
Ontario
Fri 5/29
10:00 pm-6:20 pm
2 stops17h 20m
$462
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 5/21
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Wed 6/10
7:05 am-6:09 pm
1 stop8h 04m
$466
MiamiOntario
MIA - ONT
MIAONT
Miami
Mon 5/25
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Sat 6/6
7:05 am-6:34 pm
1 stop8h 29m
$468
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 7/16
5:00 pm-11:30 pm
2 stops9h 30m
Ontario
Mon 7/20
11:55 pm-2:25 pm
2 stops11h 30m
$488
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 May.
| 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 May 3, 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.
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
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 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 May 3, 2026.
Miami and Ontario flights
Browse other Miami and Ontario flight options. Last updated on May 3, 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 May 3, 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 May 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$375 | 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 |