$89+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DEN
Aug 1 — Aug 81
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 October, booked 69 days in advance, depart on a Thursday or Friday and return on a Wednesday
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 July 2, 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 July 2, 2026.
This Frontier deal was found by Cheapflights users on 6/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Tue 8/48:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/30![Frontier logo]()
$143
This Frontier deal was found by Cheapflights users on 6/29. 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.
Tue 8/49:36 am
ONT
- DEN
1 stop9h 27m
Frontier
Tue 8/410:29 pm
DEN
- ONT
Nonstop2h 21m
Frontier
Deal found 6/29![Frontier logo]()
$144
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:59 am
ONT
- DEN
1 stop24h 34m
Frontier
Wed 9/910:34 pm
DEN
- ONT
Nonstop2h 21m
Frontier
Deal found 6/28![Frontier logo]()
$147
This Cheapflightsfares deal was found by Cheapflights users on 6/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:49 am
ONT
- DEN
Nonstop2h 21m
Frontier
Sat 8/18:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/29![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 7/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Tue 8/1810:00 am
DEN
- ONT
1 stop6h 54m
Frontier
Deal found 7/2![Frontier logo]()
$149
This Frontier deal was found by Cheapflights users on 6/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:35 pm
ONT
- DEN
Nonstop2h 22m
Frontier
Tue 11/1710:34 pm
DEN
- ONT
Nonstop2h 21m
Frontier
Deal found 6/28![Frontier logo]()
$150
This Super.com deal was found by Cheapflights users on 6/30. 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.
Tue 7/2110:49 am
ONT
- DEN
Nonstop2h 21m
Frontier
Tue 7/288:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/30![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Tue 7/2810:00 am
DEN
- ONT
1 stop23h 03m
Frontier
Deal found 6/28![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 6/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:32 am
ONT
- DEN
1 stop9h 31m
Frontier
Tue 8/48:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/28![Frontier logo]()
$159
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:49 pm
ONT
- DEN
1 stop5h 03m
Frontier
Sat 9/2612:32 pm
DEN
- ONT
Nonstop2h 25m
Frontier
Deal found 6/28![Frontier logo]()
$163
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:38 pm
ONT
- DEN
1 stop13h 10m
Frontier
Wed 7/298:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/30![Frontier logo]()
$165
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 July 2, 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 July 2, 2026.
This Southwest deal was found by Cheapflights users on 7/1. 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.
Wed 7/295:45 am
ONT
- DEN
Nonstop2h 10m
Southwest
Wed 8/52:00 pm
DEN
- ONT
1 stop4h 35m
Southwest
Deal found 7/1![Southwest logo]()
$187
This Delta deal was found by Cheapflights users on 6/29. 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.
Tue 7/216:00 am
ONT
- DEN
1 stop4h 47m
Delta
Tue 7/287:05 am
DEN
- ONT
1 stop6h 05m
Delta
Deal found 6/29![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Sat 8/15:00 am
ONT
- DEN
Nonstop2h 20m
United Airlines
Sat 8/87:20 pm
DEN
- ONT
Nonstop2h 22m
United Airlines
Deal found 6/28![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/261:04 pm
ONT
- DEN
1 stop5h 36m
Delta
Tue 9/291:00 pm
DEN
- ONT
1 stop4h 35m
Delta
Deal found 6/27![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 9/96:40 am
ONT
- DEN
1 stop4h 10m
Southwest
Wed 9/167:20 am
DEN
- ONT
1 stop4h 05m
Southwest
Deal found 7/2![Southwest logo]()
$197
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:17 pm
ONT
- DEN
1 stop5h 14m
Delta
Tue 10/138:06 am
DEN
- ONT
1 stop5h 16m
Delta
Deal found 7/2![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/281:00 pm
ONT
- DEN
1 stop6h 01m
Delta
Tue 8/46:28 pm
DEN
- ONT
1 stop6h 06m
Delta
Deal found 6/27![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:45 am
ONT
- DEN
1 stop6h 15m
Delta
Wed 10/145:30 am
DEN
- ONT
1 stop4h 25m
Delta
Deal found 7/2![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 6/30. 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.
Tue 9/82:10 pm
ONT
- DEN
2 stops6h 10m
Southwest
Wed 9/1612:25 pm
DEN
- ONT
1 stop4h 35m
Southwest
Deal found 6/30![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 6/30. 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 7/226:00 am
ONT
- DEN
1 stop4h 47m
Delta
Tue 7/285:40 am
DEN
- ONT
1 stop4h 07m
Delta
Deal found 6/30![Delta logo]()
$228
This Southwest deal was found by Cheapflights users on 6/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:30 am
ONT
- DEN
2 stops6h 05m
Southwest
Tue 7/288:05 pm
DEN
- ONT
1 stop4h 00m
Southwest
Deal found 6/29![Southwest logo]()
$292
Last-minute flights from Ontario to AuroraDiscover last-minute flight deals from Ontario to Aurora. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Aurora. Data last updated July 2, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/30. 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.
Tue 7/2110:49 am
ONT
- DEN
Nonstop2h 21m
Frontier
Sat 7/258:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/30![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:38 pm
ONT
- DEN
1 stop13h 10m
Frontier
Wed 7/298:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/30![Frontier logo]()
$165
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Tue 7/2810:00 am
DEN
- ONT
1 stop23h 03m
Frontier
Deal found 6/28![Frontier logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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.
Sat 7/256:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Sat 7/2510:29 pm
DEN
- ONT
Nonstop2h 21m
Frontier
Deal found 7/1![Frontier logo]()
$166
This Frontier deal was found by Cheapflights users on 6/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:32 am
ONT
- DEN
1 stop9h 31m
Frontier
Tue 8/48:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/28![Frontier logo]()
$159
This Frontier deal was found by Cheapflights users on 6/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Tue 8/48:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/30![Frontier logo]()
$143
This Cheapflightsfares deal was found by Cheapflights users on 6/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:49 am
ONT
- DEN
Nonstop2h 21m
Frontier
Sat 8/18:45 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 6/29![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 6/29. 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.
Tue 8/49:36 am
ONT
- DEN
1 stop9h 27m
Frontier
Tue 8/410:29 pm
DEN
- ONT
Nonstop2h 21m
Frontier
Deal found 6/29![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Wed 8/129:06 pm
DEN
- ONT
1 stop11h 26m
Frontier
Deal found 6/27![Frontier logo]()
$149
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 July 2, 2026.
Search for one-way flight options from Ontario to Aurora. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:00 am
ONT
- DEN
Nonstop2h 20m
United Airlines
Deal found 6/29![United Airlines logo]()
$89
This Super.com deal was found by Cheapflights users on 6/30. 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.
Tue 7/2110:49 am
ONT
- DEN
Nonstop2h 21m
Frontier
Deal found 6/30![Frontier logo]()
$98
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 7/281:00 pm
ONT
- DEN
1 stop6h 01m
Delta
Deal found 7/1![Delta logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 6/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:40 pm
ONT
- DEN
1 stop5h 01m
Frontier
Deal found 6/29![Frontier logo]()
$103
This Cheapflightsfares deal was found by Cheapflights users on 6/27. 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 10/292:35 pm
ONT
- DEN
Nonstop2h 22m
Frontier
Deal found 6/27![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 6/29. 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.
Wed 11/412:57 pm
ONT
- DEN
1 stop4h 43m
Frontier
Deal found 6/29![Frontier logo]()
$105
This Expedia deal was found by Cheapflights users on 6/30. 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.
Mon 11/162:35 pm
ONT
- DEN
Nonstop2h 22m
Frontier
Deal found 6/30![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Sat 9/266:00 am
ONT
- DEN
Nonstop2h 26m
Frontier
Deal found 6/30![Frontier logo]()
$107
This Cheapflightsfares deal was found by Cheapflights users on 6/27. 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 10/1311:16 am
ONT
- DEN
1 stop11h 59m
Frontier
Deal found 6/27![Frontier logo]()
$109
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:38 pm
ONT
- DEN
1 stop7h 03m
Frontier
Deal found 6/28![Frontier logo]()
$113
This CheapOair deal was found by Cheapflights users on 6/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:58 am
ONT
- DEN
1 stop23h 43m
Frontier
Deal found 6/28![Frontier logo]()
$116
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 July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $143 (Frontier) |
One-way from | $89 (United Airlines) |
Popular in | June |
Cheapest in | February |
Average price | $187 |
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 July 2, 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 - DEN
ONTDEN
Ontario
Wed 7/29
5:45 am-8:55 am
Nonstop2h 10m
Denver Intl
Wed 8/5
2:00 pm-5:35 pm
1 stop4h 35m
$187
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 7/21
6:00 am-11:47 am
1 stop4h 47m
Denver Intl
Tue 7/28
7:05 am-12:10 pm
1 stop6h 05m
$197
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 9/26
1:04 pm-7:40 pm
1 stop5h 36m
Denver Intl
Tue 9/29
1:00 pm-4:35 pm
1 stop4h 35m
$197
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 9/9
6:40 am-11:50 am
1 stop4h 10m
Denver Intl
Wed 9/16
7:20 am-10:25 am
1 stop4h 05m
$197
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 10/6
1:17 pm-7:31 pm
1 stop5h 14m
Denver Intl
Tue 10/13
8:06 am-12:22 pm
1 stop5h 16m
$197
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 7/28
1:00 pm-8:01 pm
1 stop6h 01m
Denver Intl
Tue 8/4
6:28 pm-11:34 pm
1 stop6h 06m
$197
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 10/6
9:45 am-5:00 pm
1 stop6h 15m
Denver Intl
Wed 10/14
5:30 am-8:55 am
1 stop4h 25m
$197
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 7/22
6:00 am-11:47 am
1 stop4h 47m
Denver Intl
Tue 7/28
5:40 am-8:47 am
1 stop4h 07m
$228
Quickest round-trip
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 8/1
5:00 am-8:20 am
Nonstop2h 20m
Denver Intl
Sat 8/8
7:20 pm-8:42 pm
Nonstop2h 22m
$257
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 9/8
2:10 pm-9:20 pm
2 stops6h 10m
Denver Intl
Wed 9/16
12:25 pm-4:00 pm
1 stop4h 35m
$292
Showing 1-10 of 22 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 July 2, 2026.
It’s optimal to fly from Ontario to Aurora in the evening. By choosing this option you can save up to 54% on the cost of your flight, compared to a flight at noon.
How much does it cost to fly round-trip from Ontario to Aurora?
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 June 27, 2026.
Travelers seeking maximum savings on their Ontario to Aurora flight should consider departing on Tuesday afternoons 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 July 2, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andFrontier 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
7.9
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
7.9
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
7.9
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
7.9
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
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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 2,558,603 searches. Data last updated July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$61 | Average$170 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$364 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$157 | Average$312 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$172 | Average$273 | FlexibilityNo cancel fee | On-timeN/A |