$25+ Cheap flights from Ontario (ONT) to Pueblo, 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — COS
Jun 15 — Jun 221
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Pueblo 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 Pueblo are usually found in September or October, booked 58 days in advance, depart on a Thursday or Friday and return on a Wednesday
Cheap flight deals from Ontario to Pueblo
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to PuebloExplore the most affordable flight options available from Ontario to Pueblo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
Explore the most affordable flight options available from Ontario to Pueblo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 7/13:34 pm
ONT
- DEN
1 stop8h 04m
Frontier
Wed 7/88:44 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 5/11![Frontier logo]()
$113
This Southwest deal was found by Cheapflights users on 5/12. 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 7/82:50 pm
ONT
- DEN
Nonstop2h 10m
Southwest
Wed 7/158:15 am
DEN
- ONT
Nonstop2h 20m
Southwest
Deal found 5/12![Southwest logo]()
$117
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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 6/166:00 am
ONT
- DEN
Nonstop2h 26m
Frontier
Tue 6/2310:29 pm
DEN
- ONT
Nonstop2h 20m
Frontier
Deal found 5/12![Frontier logo]()
$118
This WAYA deal was found by Cheapflights users on 5/12. 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.
Thu 6/411:51 am
ONT
- DEN
1 stop8h 36m
Frontier
Sat 6/610:29 pm
DEN
- ONT
Nonstop2h 20m
Frontier
Deal found 5/12![Frontier logo]()
$120
This Cheapflightsfares deal was found by Cheapflights users on 5/15. 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 9/266:00 am
ONT
- DEN
Nonstop2h 26m
Frontier
Tue 9/291:24 pm
DEN
- ONT
1 stop8h 30m
Frontier
Deal found 5/15![Frontier logo]()
$121
This Cheapflightsfares deal was found by Cheapflights users on 5/13. 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 9/26:00 am
ONT
- DEN
Nonstop2h 26m
Frontier
Tue 9/812:47 pm
DEN
- ONT
1 stop8h 01m
Frontier
Deal found 5/13![Frontier logo]()
$122
This Frontier deal was found by Cheapflights users on 5/13. 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 7/146:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Tue 7/1412:47 pm
DEN
- ONT
1 stop8h 06m
Frontier
Deal found 5/13![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 6/63:30 pm
ONT
- DEN
1 stop7h 39m
Frontier
Wed 6/108:44 am
DEN
- ONT
Nonstop2h 21m
Frontier
Deal found 5/12![Frontier logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 5/15. 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.
Mon 8/1010:49 am
ONT
- DEN
Nonstop2h 21m
Frontier
Mon 8/2410:29 pm
DEN
- ONT
Nonstop2h 20m
Frontier
Deal found 5/15![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/46:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Mon 6/88:41 am
DEN
- ONT
Nonstop2h 24m
Frontier
Deal found 5/13![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 5/12. 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 7/76:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Wed 7/158:44 am
DEN
- ONT
Nonstop2h 19m
Frontier
Deal found 5/12![Frontier logo]()
$128
Best flights from Ontario to PuebloDiscover carefully curated flight deals from Ontario to Pueblo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
Discover carefully curated flight deals from Ontario to Pueblo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
This Southwest deal was found by Cheapflights users on 5/11. 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 6/106:35 pm
ONT
- DEN
1 stop4h 30m
Southwest
Wed 6/176:00 am
DEN
- ONT
1 stop4h 05m
Southwest
Deal found 5/11![Southwest logo]()
$137
This United Airlines deal was found by Cheapflights users on 5/14. 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.
Wed 9/91:44 pm
ONT
- DEN
1 stop7h 27m
United Airlines
Thu 9/176:00 am
DEN
- ONT
1 stop7h 12m
United Airlines
Deal found 5/14![United Airlines logo]()
$197
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:06 pm
ONT
- DEN
1 stop4h 44m
Delta
Thu 8/135:18 am
DEN
- ONT
1 stop4h 30m
Delta
Deal found 5/11![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 5/15. 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 8/225:00 am
ONT
- DEN
Nonstop2h 21m
United Airlines
Wed 8/267:45 am
DEN
- ONT
1 stop5h 27m
United Airlines
Deal found 5/15![United Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 5/13. 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 8/136:20 am
ONT
- DEN
Nonstop2h 15m
Southwest
Thu 8/209:45 am
DEN
- ONT
2 stops6h 20m
Southwest
Deal found 5/13![Southwest logo]()
$272
This United Airlines deal was found by Cheapflights users on 5/11. 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 9/191:44 pm
ONT
- DEN
1 stop5h 22m
United Airlines
Thu 10/16:00 am
DEN
- ONT
1 stop5h 03m
United Airlines
Deal found 5/11![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 5/14. 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 7/144:10 pm
ONT
- DEN
2 stops5h 55m
Southwest
Wed 7/226:15 am
DEN
- ONT
1 stop4h 00m
Southwest
Deal found 5/14![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 5/13. 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.
Thu 6/46:30 pm
ONT
- DEN
Nonstop2h 21m
United Airlines
Mon 6/87:24 pm
DEN
- ONT
Nonstop2h 22m
United Airlines
Deal found 5/13![United Airlines logo]()
$298
This Southwest deal was found by Cheapflights users on 5/14. 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 9/92:10 pm
ONT
- DEN
2 stops6h 10m
Southwest
Thu 9/174:10 pm
DEN
- ONT
2 stops6h 15m
Southwest
Deal found 5/14![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 5/14. 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.
Thu 6/46:30 pm
ONT
- DEN
Nonstop2h 21m
United Airlines
Sun 6/77:40 am
DEN
- ONT
1 stop5h 32m
United Airlines
Deal found 5/14![United Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 5/12. 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.
Mon 6/83:40 pm
ONT
- DEN
1 stop4h 20m
Southwest
Wed 6/1011:55 am
DEN
- ONT
2 stops6h 10m
Southwest
Deal found 5/12![Southwest logo]()
$340
This Southwest deal was found by Cheapflights users on 5/11. 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 8/206:30 am
ONT
- DEN
2 stops7h 00m
Southwest
Mon 8/314:40 pm
DEN
- ONT
1 stop6h 05m
Southwest
Deal found 5/11![Southwest logo]()
$380
Last-minute flights from Ontario to PuebloDiscover last-minute flight deals from Ontario to Pueblo. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Pueblo. Data last updated May 16, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 5/13. 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 5/213:30 pm
ONT
- DEN
1 stop10h 55m
Frontier
Wed 5/279:06 pm
DEN
- ONT
1 stop11h 02m
Frontier
Deal found 5/13![Frontier logo]()
$244
This Cheapflightsfares deal was found by Cheapflights users on 5/13. 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 5/228:59 am
ONT
- DEN
1 stop26h 51m
Frontier
Tue 5/267:00 am
DEN
- ONT
1 stop25h 35m
Frontier
Deal found 5/13![Frontier logo]()
$259
This Frontier deal was found by Cheapflights users on 5/11. 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 5/233:30 pm
ONT
- DEN
1 stop7h 39m
Frontier
Tue 6/28:41 am
DEN
- ONT
Nonstop2h 24m
Frontier
Deal found 5/11![Frontier logo]()
$219
This Frontier deal was found by Cheapflights users on 5/12. 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.
Sun 5/243:30 pm
ONT
- DEN
1 stop10h 55m
Frontier
Sun 5/319:06 pm
DEN
- ONT
1 stop11h 02m
Frontier
Deal found 5/12![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 5/12. 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 5/258:06 pm
ONT
- DEN
1 stop11h 00m
Frontier
Wed 5/276:05 am
DEN
- ONT
1 stop7h 49m
Frontier
Deal found 5/12![Frontier logo]()
$245
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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.
Mon 5/253:30 pm
ONT
- DEN
1 stop17h 08m
Frontier
Sun 5/3110:29 pm
DEN
- ONT
1 stop17h 40m
Frontier
Deal found 5/12![Frontier logo]()
$249
This Frontier deal was found by Cheapflights users on 5/12. 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 5/264:39 pm
ONT
- DEN
1 stop9h 46m
Frontier
Fri 5/296:10 am
DEN
- ONT
1 stop9h 59m
Frontier
Deal found 5/12![Frontier logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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 5/264:39 pm
ONT
- DEN
1 stop9h 46m
Frontier
Thu 5/289:52 am
DEN
- ONT
1 stop10h 19m
Frontier
Deal found 5/12![Frontier logo]()
$229
This Frontier deal was found by Cheapflights users on 5/11. 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 5/268:06 pm
ONT
- DEN
1 stop11h 00m
Frontier
Sat 5/306:05 am
DEN
- ONT
1 stop6h 01m
Frontier
Deal found 5/11![Frontier logo]()
$230
One-way flights from Ontario to PuebloSearch for one-way flight options from Ontario to Pueblo. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
Search for one-way flight options from Ontario to Pueblo. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
This Super.com deal was found by Cheapflights users on 5/13. 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 8/56:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Deal found 5/13![Frontier logo]()
$25
This Kiwi.com deal was found by Cheapflights users on 5/14. 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 8/1210:49 am
ONT
- DEN
Nonstop2h 21m
Frontier
Deal found 5/14![Frontier logo]()
$27
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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 9/296:00 am
ONT
- DEN
Nonstop2h 26m
Frontier
Deal found 5/12![Frontier logo]()
$28
This Super.com deal was found by Cheapflights users on 5/14. 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 6/36:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Deal found 5/14![Frontier logo]()
$29
This Super.com deal was found by Cheapflights users on 5/11. 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 6/86:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Deal found 5/11![Frontier logo]()
$42
This Super.com deal was found by Cheapflights users on 5/12. 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 6/26:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Deal found 5/12![Frontier logo]()
$44
This Super.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Deal found 5/13![Frontier logo]()
$54
This Trip.com deal was found by Cheapflights users on 5/15. 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 7/286:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Deal found 5/15![Frontier logo]()
$57
This Trip.com deal was found by Cheapflights users on 5/14. 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.
Wed 7/156:00 am
ONT
- DEN
Nonstop2h 24m
Frontier
Deal found 5/14![Frontier logo]()
$58
This United Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 6/105:00 am
ONT
- DEN
Nonstop2h 20m
United Airlines
Deal found 5/13![United Airlines logo]()
$59
Find flight deals from Ontario to Pueblo
Keep the following information in mind while searching for Ontario to Pueblo flight deals. Data was last updated May 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $113 (Kiwi.com) |
One-way from | $25 (Super.com) |
Popular in | June |
Cheapest in | September |
Average price | $209 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Pueblo 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 16, 2026.
Use the filters below to find and compare flights from Ontario to Pueblo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 6/10
6:35 pm-12:05 am
1 stop4h 30m
Denver Intl
Wed 6/17
6:00 am-9:05 am
1 stop4h 05m
$137
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 9/9
1:44 pm-10:11 pm
1 stop7h 27m
Denver Intl
Thu 9/17
6:00 am-12:12 pm
1 stop7h 12m
$197
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 8/22
5:00 am-8:21 am
Nonstop2h 21m
Denver Intl
Wed 8/26
7:45 am-12:12 pm
1 stop5h 27m
$267
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 8/13
6:20 am-9:35 am
Nonstop2h 15m
Denver Intl
Thu 8/20
9:45 am-3:05 pm
2 stops6h 20m
$272
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 9/19
1:44 pm-8:06 pm
1 stop5h 22m
Denver Intl
Thu 10/1
6:00 am-10:03 am
1 stop5h 03m
$277
Quickest round-trip
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 6/4
6:30 pm-9:51 pm
Nonstop2h 21m
Denver Intl
Mon 6/8
7:24 pm-8:46 pm
Nonstop2h 22m
$298
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 7/14
4:10 pm-11:05 pm
2 stops5h 55m
Denver Intl
Wed 7/22
6:15 am-9:15 am
1 stop4h 00m
$302
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 6/4
6:30 pm-9:51 pm
Nonstop2h 21m
Denver Intl
Sun 6/7
7:40 am-12:12 pm
1 stop5h 32m
$329
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 9/9
2:10 pm-9:20 pm
2 stops6h 10m
Denver Intl
Thu 9/17
4:10 pm-9:25 pm
2 stops6h 15m
$337
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Fri 8/7
5:06 pm-10:50 pm
1 stop4h 44m
Denver Intl
Thu 8/13
5:18 am-8:48 am
1 stop4h 30m
$339
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Ontario to Pueblo
Have a flexible travel schedule? Discover the best time to fly to Pueblo 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 Pueblo
ONT-PU5
ONT-DEN
How much does it cost to fly round-trip from Ontario to Pueblo?
Reviews of airlines servicing Pueblo
Get insights into the airlines that provide service to Pueblo. 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 Pueblo. Reviews last updated May 16, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andFrontier from Ontario to Pueblo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
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 Pueblo. 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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Ontario and Pueblo flights
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Top 3 airlines flying from Ontario to Pueblo
Discover the top 3 airlines that operate flights from Ontario to Pueblo. 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$172 | Average$273 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$196 | Average$378 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$377 | FlexibilityNo cancel fee | On-time63% |