$58+ Cheap flights from Ontario (ONT) to Aurora, CO
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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DEN
Mar 11 — Mar 181
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 April, booked 51 days in advance, depart on a Friday or Thursday and return on a Saturday
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 February 9, 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 February 9, 2026.
This Super.com deal was found by Cheapflights users on 2/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Sun 3/810:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/5![Frontier logo]()
$78
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:05 am
ONT
- DEN
Nonstop2h 20m
Frontier
Mon 3/910:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/6![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 2/9. 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 3/146:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Tue 3/1710:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/9![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Sun 4/1912:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Thu 4/2310:29 pm
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 2/9![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 2/9. 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 3/126:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Tue 3/1710:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/9![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 5/712:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 5/116:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 2/9![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 2/7. 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.
Tue 3/38:40 am
ONT
- DEN
Nonstop2h 24m
Frontier
Sat 3/710:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/7![Frontier logo]()
$86
This Frontier deal was found by Cheapflights users on 2/7. 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 4/106:20 am
ONT
- DEN
Nonstop2h 23m
Frontier
Tue 4/1410:29 pm
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 2/7![Frontier logo]()
$87
This Cheapflightsfares deal was found by Cheapflights users on 2/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/155:33 pm
ONT
- DEN
Nonstop2h 25m
Frontier
Sun 5/176:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 2/7![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 2/7. 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.
Thu 3/56:05 am
ONT
- DEN
Nonstop2h 20m
Frontier
Sun 3/810:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/7![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 2/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Wed 3/1110:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/8![Frontier logo]()
$90
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 February 9, 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 February 9, 2026.
This Super.com deal was found by Cheapflights users on 2/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Tue 3/1010:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/8![Frontier logo]()
$90
This Southwest deal was found by Cheapflights users on 2/9. 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 4/185:30 am
ONT
- DEN
2 stops5h 50m
Southwest
Wed 4/226:30 am
DEN
- ONT
1 stop4h 20m
Southwest
Deal found 2/9![Southwest logo]()
$200
This Delta deal was found by Cheapflights users on 2/9. 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 3/115:09 pm
ONT
- DEN
1 stop4h 21m
Delta
Mon 3/166:15 pm
DEN
- ONT
1 stop6h 36m
Delta
Deal found 2/9![Delta logo]()
$205
This Super.com deal was found by Cheapflights users on 2/9. 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 3/146:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Tue 3/178:17 am
DEN
- ONT
1 stop7h 48m
Frontier
Deal found 2/9![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 2/6. 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 3/206:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Sun 3/2210:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/6![Frontier logo]()
$125
This Frontier deal was found by Cheapflights users on 2/8. 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 4/910:27 pm
ONT
- DEN
1 stop4h 32m
Frontier
Tue 4/142:30 pm
DEN
- ONT
1 stop5h 04m
Frontier
Deal found 2/8![Frontier logo]()
$160
This Delta deal was found by Cheapflights users on 2/9. 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 3/115:09 pm
ONT
- DEN
1 stop4h 21m
Delta
Thu 3/126:15 pm
DEN
- ONT
1 stop6h 36m
Delta
Deal found 2/9![Delta logo]()
$205
This Delta deal was found by Cheapflights users on 2/9. 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 3/126:00 am
ONT
- DEN
1 stop4h 33m
Delta
Tue 3/178:00 am
DEN
- ONT
1 stop5h 23m
Delta
Deal found 2/9![Delta logo]()
$205
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:44 pm
ONT
- DEN
1 stop8h 35m
Frontier
Thu 4/169:10 am
DEN
- ONT
1 stop26h 39m
Frontier
Deal found 2/6![Frontier logo]()
$174
This Delta deal was found by Cheapflights users on 2/9. 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 3/116:00 am
ONT
- DEN
1 stop4h 33m
Delta
Wed 3/116:15 pm
DEN
- ONT
1 stop6h 36m
Delta
Deal found 2/9![Delta logo]()
$205
This Cheapflightsfares deal was found by Cheapflights users on 2/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/192:06 pm
ONT
- DEN
1 stop12h 50m
Frontier
Sun 3/2210:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/8![Frontier logo]()
$192
This Frontier deal was found by Cheapflights users on 2/8. 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.
Mon 2/166:10 am
ONT
- DEN
Nonstop2h 20m
Frontier
Tue 2/178:00 pm
DEN
- ONT
Nonstop2h 34m
Frontier
Deal found 2/8![Frontier logo]()
$198
Last-minute flights from Ontario to AuroraDiscover last-minute flight deals from Ontario to Aurora. Data last updated February 9, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Aurora. Data last updated February 9, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 2/5. 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.
Sat 2/286:00 am
ONT
- DEN
Nonstop2h 20m
Frontier
Fri 3/610:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/5![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 2/7. 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.
Tue 3/38:40 am
ONT
- DEN
Nonstop2h 24m
Frontier
Sat 3/710:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/7![Frontier logo]()
$86
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/42:06 pm
ONT
- DEN
1 stop12h 50m
Frontier
Sat 3/710:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/6![Frontier logo]()
$87
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:05 am
ONT
- DEN
Nonstop2h 20m
Frontier
Mon 3/910:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/6![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 2/7. 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.
Thu 3/56:05 am
ONT
- DEN
Nonstop2h 20m
Frontier
Sun 3/810:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/7![Frontier logo]()
$89
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:08 pm
ONT
- DEN
Nonstop2h 23m
Frontier
Thu 3/510:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/6![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 2/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Sun 3/810:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/5![Frontier logo]()
$78
This Super.com deal was found by Cheapflights users on 2/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Tue 3/1010:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/8![Frontier logo]()
$90
This Cheapflightsfares deal was found by Cheapflights users on 2/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Wed 3/1110:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/7![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 2/9. 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 3/126:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Tue 3/1710:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/9![Frontier logo]()
$84
This Super.com deal was found by Cheapflights users on 2/9. 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 3/146:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Mon 3/1610:29 pm
DEN
- ONT
Nonstop2h 30m
Frontier
Deal found 2/9![Frontier logo]()
$82
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 February 9, 2026.
Search for one-way flight options from Ontario to Aurora. Find affordable one-way fares based on user searches. Data last updated February 9, 2026.
This WAYA deal was found by Cheapflights users on 2/8. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:40 pm
ONT
- DEN
1 stop5h 16m
Frontier
Deal found 2/8![Frontier logo]()
$58
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/152:44 pm
ONT
- DEN
1 stop8h 35m
Frontier
Deal found 2/9![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:22 pm
ONT
- DEN
1 stop11h 34m
Frontier
Deal found 2/6![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/14:52 pm
ONT
- DEN
1 stop6h 28m
Frontier
Deal found 2/9![Frontier logo]()
$62
This Super.com deal was found by Cheapflights users on 2/9. 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 3/206:15 am
ONT
- DEN
Nonstop2h 20m
Frontier
Deal found 2/9![Frontier logo]()
$63
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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 4/106:20 am
ONT
- DEN
Nonstop2h 23m
Frontier
Deal found 2/9![Frontier logo]()
$64
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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.
Sat 2/286:00 am
ONT
- DEN
Nonstop2h 20m
Frontier
Deal found 2/9![Frontier logo]()
$65
This Trip.com deal was found by Cheapflights users on 2/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/309:49 pm
ONT
- DEN
1 stop5h 07m
Frontier
Deal found 2/6![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:59 pm
ONT
- DEN
1 stop6h 00m
Frontier
Deal found 2/7![Frontier logo]()
$68
This WAYA deal was found by Cheapflights users on 2/9. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/242:23 pm
ONT
- DEN
1 stop8h 56m
Frontier
Deal found 2/9![Frontier logo]()
$69
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/42:06 pm
ONT
- DEN
1 stop12h 50m
Frontier
Deal found 2/6![Frontier logo]()
$70
This WAYA deal was found by Cheapflights users on 2/6. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/172:23 pm
ONT
- DEN
1 stop4h 31m
Frontier
Deal found 2/6![Frontier logo]()
$71
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 February 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $78 (Super.com) |
One-way from | $58 (WAYA) |
Popular in | December |
Cheapest in | February |
Average price | $155 |
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 2,558,603 searches. Data last updated February 9, 2026.
Use the filters below to find and compare flights from Ontario to Aurora that are best for you.
Fly from
Ontario
Fly to
Aurora
Route
Depart
Return
Price
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Fri 3/6
6:15 am-9:35 am
Nonstop2h 20m
Denver Intl
Tue 3/10
10:29 pm-11:59 pm
Nonstop2h 30m
$90
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 3/14
6:15 am-9:35 am
Nonstop2h 20m
Denver Intl
Tue 3/17
8:17 am-3:05 pm
1 stop7h 48m
$120
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Fri 3/20
6:15 am-9:35 am
Nonstop2h 20m
Denver Intl
Sun 3/22
10:29 pm-11:59 pm
Nonstop2h 30m
$125
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 4/9
10:27 pm-3:59 am
1 stop4h 32m
Denver Intl
Tue 4/14
2:30 pm-6:34 pm
1 stop5h 04m
$160
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 4/15
2:44 pm-12:19 am
1 stop8h 35m
Denver Intl
Thu 4/16
9:10 am-10:49 am
1 stop26h 39m
$174
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 3/19
2:06 pm-3:56 am
1 stop12h 50m
Denver Intl
Sun 3/22
10:29 pm-11:59 pm
Nonstop2h 30m
$192
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Mon 2/16
6:10 am-9:30 am
Nonstop2h 20m
Denver Intl
Tue 2/17
8:00 pm-9:34 pm
Nonstop2h 34m
$198
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 4/18
5:30 am-12:20 pm
2 stops5h 50m
Denver Intl
Wed 4/22
6:30 am-9:50 am
1 stop4h 20m
$200
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 3/11
5:09 pm-10:30 pm
1 stop4h 21m
Denver Intl
Mon 3/16
6:15 pm-11:51 pm
1 stop6h 36m
$205
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 3/11
5:09 pm-10:30 pm
1 stop4h 21m
Denver Intl
Thu 3/12
6:15 pm-11:51 pm
1 stop6h 36m
$205
Showing 1-10 of 24 results
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
How far ahead should I book a flight from Ontario to Aurora?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Aurora. Price data was last updated on February 6, 2026.
The best time to book flights from Ontario to Aurora is 51 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Ontario to Aurora?
Currently, March is the cheapest month in which you can book a flight from Ontario to Aurora (average of $36). Flying from Ontario to Aurora in September is currently the most expensive (average of $75). 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.
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 February 9, 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.
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 February 7, 2026.
Travelers seeking maximum savings on their Ontario to Aurora flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday 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 February 9, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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.
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
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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Complete your trip
Complete your trip to Aurora by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Aurora by cabin class
Find flights from Ontario to Aurora, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Aurora flights
Browse other Ontario and Aurora flight options. Last updated on February 9, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on February 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Aurora flights
Consider these flights traveling from Ontario to Aurora.
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 2,558,603 searches. Data last updated February 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$152 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$109 | Average$265 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$117 | Average$312 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$130 | Average$320 | FlexibilityNo cancel fee | On-time69% |