$33+ Cheap flights from Ontario (ONT) to Aurora, CO
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DEN
Oct 5 — Oct 121
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Aurora 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Ontario to Aurora are usually found in February or January, booked 67 days in advance, depart on a Friday or Saturday and return on a Tuesday
Cheap flight deals from Ontario to Aurora
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to AuroraExplore the most affordable flight options available from Ontario to Aurora. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
Explore the most affordable flight options available from Ontario to Aurora. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
This Super.com deal was found by Cheapflights users on 9/1. 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.
Tue 9/226:15 am -
Nonstop2h 20m
Tue 9/299:05 am -
Nonstop2h 25m
Deal found 9/1![Frontier logo]()
$96
This Orbitz deal was found by Cheapflights users on 9/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:45 am -
Nonstop2h 22m
Tue 10/610:29 pm -
Nonstop2h 18m
Deal found 9/1![Frontier logo]()
$97
This Booking.com deal was found by Cheapflights users on 9/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:15 am -
Nonstop2h 20m
Tue 10/209:01 am -
Nonstop2h 28m
Deal found 9/1![Frontier logo]()
$98
This Justfly.com deal was found by Cheapflights users on 9/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:15 am -
Nonstop2h 20m
Sat 10/310:29 pm -
Nonstop2h 18m
Deal found 9/1![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 9/3. 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.
Thu 9/246:15 am -
Nonstop2h 20m
Fri 9/259:05 am -
Nonstop2h 25m
Deal found 9/3![Frontier logo]()
$103
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:15 am -
Nonstop2h 20m
Fri 10/29:05 am -
Nonstop2h 25m
Deal found 9/2![Frontier logo]()
$104
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:15 am -
Nonstop2h 26m
Tue 10/139:01 am -
Nonstop2h 28m
Deal found 9/3![Frontier logo]()
$105
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:52 am -
Nonstop2h 26m
Mon 10/2610:29 pm -
Nonstop2h 21m
Deal found 9/3![Frontier logo]()
$106
This Priceline deal was found by Cheapflights users on 9/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:45 am -
Nonstop2h 22m
Sat 10/1010:29 pm -
Nonstop2h 21m
Deal found 9/1![Frontier logo]()
$107
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:45 am -
Nonstop2h 22m
Mon 9/2810:50 pm -
1 stop11h 19m
Deal found 9/2![Frontier logo]()
$110
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:25 pm -
1 stop15h 24m
Tue 10/2010:29 pm -
Nonstop2h 21m
Deal found 9/2![Frontier logo]()
$111
This Booking.com deal was found by Cheapflights users on 9/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:15 am -
Nonstop2h 20m
Thu 9/247:30 am -
1 stop4h 52m
Deal found 9/1![Frontier logo]()
$112
Best flights from Ontario to AuroraDiscover carefully curated flight deals from Ontario to Aurora that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
Discover carefully curated flight deals from Ontario to Aurora that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
This Southwest deal was found by Cheapflights users on 9/1. 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.
Sat 10/33:10 pm -
1 stop5h 30m
Tue 10/62:55 pm -
2 stops7h 25m
Deal found 9/1![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Mon 9/215:00 am -
Nonstop2h 21m
Thu 9/2411:26 am -
Nonstop2h 20m
Deal found 9/3![United Airlines logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:42 pm -
2 stops20h 50m
Mon 10/127:07 am -
1 stop7h 09m
Deal found 8/31![Alaska Airlines logo]()
$453
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:00 am -
2 stops5h 55m
Thu 9/245:40 pm -
1 stop4h 50m
Deal found 9/3![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 9/4. 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 10/304:15 pm -
1 stop3h 45m
Sat 10/316:40 am -
2 stops7h 20m
Deal found 9/4![Southwest logo]()
$388
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:13 am -
1 stop10h 24m
Wed 10/216:59 pm -
2 stops23h 06m
Deal found 8/30![Alaska Airlines logo]()
$455
This Southwest deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:30 pm -
2 stops5h 25m
Mon 10/196:35 pm -
1 stop3h 50m
Deal found 8/30![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 9/2. 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 11/135:00 am -
2 stops5h 10m
Sun 11/155:20 pm -
1 stop5h 35m
Deal found 9/2![Southwest logo]()
$393
This United Airlines deal was found by Cheapflights users on 9/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:00 am -
Nonstop2h 21m
Sun 9/276:00 am -
1 stop7h 18m
Deal found 9/4![United Airlines logo]()
$524
This Alaska Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/274:27 pm -
2 stops18h 53m
Wed 9/305:41 pm -
1 stop18h 35m
Deal found 9/2![Alaska Airlines logo]()
$483
Last-minute flights from Ontario to AuroraDiscover last-minute flight deals from Ontario to Aurora. Data last updated September 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Aurora. Data last updated September 5, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 9/1. 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.
Tue 9/226:15 am -
Nonstop2h 20m
Tue 9/299:05 am -
Nonstop2h 25m
Deal found 9/1![Frontier logo]()
$96
This Booking.com deal was found by Cheapflights users on 9/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:15 am -
Nonstop2h 20m
Thu 9/247:30 am -
1 stop4h 52m
Deal found 9/1![Frontier logo]()
$112
This Frontier deal was found by Cheapflights users on 9/3. 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.
Thu 9/246:15 am -
Nonstop2h 20m
Fri 9/259:05 am -
Nonstop2h 25m
Deal found 9/3![Frontier logo]()
$103
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:45 am -
Nonstop2h 22m
Mon 9/2810:50 pm -
1 stop11h 19m
Deal found 9/2![Frontier logo]()
$110
This Justfly.com deal was found by Cheapflights users on 9/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:15 am -
Nonstop2h 20m
Sat 10/310:29 pm -
Nonstop2h 18m
Deal found 9/1![Frontier logo]()
$100
This Orbitz deal was found by Cheapflights users on 9/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:45 am -
Nonstop2h 22m
Tue 10/610:29 pm -
Nonstop2h 18m
Deal found 9/1![Frontier logo]()
$97
This Booking.com deal was found by Cheapflights users on 9/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:15 am -
Nonstop2h 20m
Tue 10/209:01 am -
Nonstop2h 28m
Deal found 9/1![Frontier logo]()
$98
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:15 am -
Nonstop2h 20m
Fri 10/29:05 am -
Nonstop2h 25m
Deal found 9/2![Frontier logo]()
$104
This Priceline deal was found by Cheapflights users on 9/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:45 am -
Nonstop2h 22m
Sat 10/1010:29 pm -
Nonstop2h 21m
Deal found 9/1![Frontier logo]()
$107
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:15 am -
Nonstop2h 26m
Tue 10/139:01 am -
Nonstop2h 28m
Deal found 9/3![Frontier logo]()
$105
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:25 pm -
1 stop15h 24m
Tue 10/2010:29 pm -
Nonstop2h 21m
Deal found 9/2![Frontier logo]()
$111
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:52 am -
Nonstop2h 26m
Mon 10/2610:29 pm -
Nonstop2h 21m
Deal found 9/2![Frontier logo]()
$106
One-way flights from Ontario to AuroraSearch for one-way flight options from Ontario to Aurora. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
Search for one-way flight options from Ontario to Aurora. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
This Super.com deal was found by Cheapflights users on 9/3. 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.
Thu 10/811:52 am -
Nonstop2h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$33
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:52 am -
Nonstop2h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$34
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:45 am -
Nonstop2h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$42
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:45 am -
Nonstop2h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$43
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:20 am -
Nonstop2h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$44
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:25 am -
Nonstop2h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$54
This Cheapflightsfares deal was found by Cheapflights users on 9/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:25 am -
Nonstop2h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:45 am -
Nonstop2h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$70
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:15 am -
Nonstop2h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$71
This Super.com deal was found by Cheapflights users on 9/2. 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 10/211:45 am -
Nonstop2h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$72
This Cheapflightsfares deal was found by Cheapflights users on 9/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:52 am -
Nonstop2h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$73
Find flight deals from Ontario to Aurora
Keep the following information in mind while searching for Ontario to Aurora flight deals. Data was last updated September 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $96 (Super.com) |
One-way from | $33 (Super.com) |
Popular in | June |
Cheapest in | February |
Average price | $236 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Aurora 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 7,457,451 searches. Data last updated September 5, 2026.
Use the filters below to find and compare flights from Ontario to Aurora that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Mon 9/28
5:15 pm-10:40 pm
1 stop4h 25m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$99
Quickest round-trip
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Mon 2/22
5:00 am-8:11 am
Nonstop2h 11m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Mon 11/23
5:00 am-8:17 am
Nonstop2h 17m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Sat 2/27
1:00 pm-7:10 pm
1 stop5h 10m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Sat 2/27
5:00 am-8:11 am
Nonstop2h 11m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Thu 12/17
7:11 am-3:09 pm
1 stop6h 58m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$127
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Fri 12/4
7:11 am-3:09 pm
1 stop6h 58m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$135
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Sat 10/3
4:03 pm-11:23 pm
1 stop6h 20m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$159
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Tue 3/2
3:30 pm-11:28 pm
1 stop6h 58m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$182
OntarioDenver
ONT Ontario - DEN Denver Intl
ONTDEN
Ontario
Sun 12/20
6:20 am-9:44 am
Nonstop2h 24m
Denver Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from Ontario to Aurora
Have a flexible travel schedule? Discover the best time to fly to Aurora from Ontario with our price prediction graph.
ONT-DEN
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 Ontario to Aurora
ONT-9UR
ONT-DEN
What is the cheapest time of day to fly from ONT to 9UR?
Find hourly flight availability from Ontario to Aurora. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 5, 2026.
It’s optimal to fly from Ontario to Aurora in the evening. By choosing this option you can save up to 53% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Ontario to Aurora
Explore weekly flight availability from Ontario to Aurora. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 5, 2026.
The most flights from ONT to 9UR are scheduled on a Thursday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Ontario to Aurora?
Airfare is below average for this route at the moment.
Ontario to Aurora flights typically cost between $147 and $320 in September.The cheapest round-trip price found within the last 5 days was $96 on Frontier (Sep 22-Sep 29).
What is the cheapest day to fly from Ontario to Aurora?
Use this chart to determine the cheapest time to fly round-trip from Ontario to Aurora. Price data was last updated on August 29, 2026.
Travelers seeking maximum savings on their Ontario to Aurora flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Aurora
Get insights into the airlines that provide service to Aurora. 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 Aurora. Reviews last updated September 5, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Ontario to Aurora to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Ontario to Aurora. 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 Ontario to Aurora
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Ontario and Aurora flights
Browse other Ontario and Aurora flight options. Last updated on September 5, 2026.
Other flights from Ontario
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Top 4 airlines flying from Ontario to Aurora
Discover the top 4 airlines that operate flights from Ontario to Aurora. 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 7,457,451 searches. Data last updated September 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$62 | Average$188 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$277 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$157 | Average$314 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$381 | FlexibilityNo cancel fee | On-time63% |