$79+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — COS
May 1 — May 81
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 February, booked 51 days in advance, depart on a Friday or Thursday and return on a Saturday
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 April 1, 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 April 1, 2026.
This Frontier deal was found by Cheapflights users on 3/28. 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 5/126:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Tue 5/198:41 am
DEN
- ONT
Nonstop2h 24m
Frontier
Deal found 3/28![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 3/30. 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 4/2912:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Sat 5/210:29 pm
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/30![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 5/46:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/30![Frontier logo]()
$91
This Cheapflightsfares deal was found by Cheapflights users on 3/29. 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.
Sun 4/1912:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 4/206:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/29![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 3/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:33 pm
ONT
- DEN
Nonstop2h 25m
Frontier
Sun 4/196:00 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/31![Frontier logo]()
$93
This Trip.com deal was found by Cheapflights users on 3/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Tue 5/268:41 am
DEN
- ONT
Nonstop2h 24m
Frontier
Deal found 3/29![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 3/30. 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.
Wed 4/1512:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 4/206:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/30![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 3/28. 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.
Wed 4/1512:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Sat 4/2510:29 pm
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/28![Frontier logo]()
$99
This Frontier deal was found by Cheapflights users on 3/28. 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.
Fri 4/1712:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 4/273:53 pm
DEN
- ONT
1 stop8h 50m
Frontier
Deal found 3/28![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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.
Fri 5/112:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 5/46:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/28![Frontier logo]()
$102
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 April 1, 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 April 1, 2026.
This Southwest deal was found by Cheapflights users on 3/29. 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.
Mon 5/41:55 pm
ONT
- DEN
1 stop4h 20m
Southwest
Tue 5/126:45 am
DEN
- ONT
2 stops5h 50m
Southwest
Deal found 3/29![Southwest logo]()
$224
This Delta deal was found by Cheapflights users on 3/30. 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.
Tue 4/145:05 pm
ONT
- DEN
1 stop4h 24m
Delta
Mon 4/206:27 pm
DEN
- ONT
1 stop6h 17m
Delta
Deal found 3/30![Delta logo]()
$278
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:34 pm
ONT
- DEN
Nonstop2h 22m
United Airlines
Mon 4/277:10 pm
DEN
- ONT
Nonstop2h 26m
United Airlines
Deal found 3/27![United Airlines logo]()
$280
This Southwest deal was found by Cheapflights users on 3/29. 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.
Fri 5/13:00 pm
ONT
- DEN
1 stop4h 45m
Southwest
Tue 5/56:45 am
DEN
- ONT
2 stops5h 50m
Southwest
Deal found 3/29![Southwest logo]()
$253
This Southwest deal was found by Cheapflights users on 3/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:15 am
ONT
- DEN
2 stops5h 30m
Southwest
Tue 5/192:05 pm
DEN
- ONT
2 stops5h 50m
Southwest
Deal found 3/28![Southwest logo]()
$269
This Delta deal was found by Cheapflights users on 3/27. 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.
Wed 4/156:00 am
ONT
- DEN
1 stop4h 32m
Delta
Wed 4/226:27 pm
DEN
- ONT
1 stop6h 17m
Delta
Deal found 3/27![Delta logo]()
$300
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:18 pm
ONT
- DEN
Nonstop2h 20m
United Airlines
Tue 5/264:05 pm
DEN
- ONT
Nonstop2h 23m
United Airlines
Deal found 3/27![United Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:00 am
ONT
- DEN
Nonstop2h 22m
United Airlines
Fri 5/1511:15 am
DEN
- ONT
Nonstop2h 23m
United Airlines
Deal found 3/31![United Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 3/29. 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.
Mon 4/273:55 pm
ONT
- DEN
1 stop6h 10m
Southwest
Mon 5/411:05 am
DEN
- ONT
2 stops6h 20m
Southwest
Deal found 3/29![Southwest logo]()
$326
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/151:34 pm
ONT
- DEN
Nonstop2h 22m
United Airlines
Sat 4/1811:15 am
DEN
- ONT
Nonstop2h 23m
United Airlines
Deal found 3/30![United Airlines logo]()
$397
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/261:00 pm
ONT
- DEN
Nonstop2h 14m
United Airlines
Tue 9/297:05 pm
DEN
- ONT
Nonstop2h 15m
United Airlines
Deal found 3/27![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 3/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/235:50 am
ONT
- DEN
Nonstop2h 15m
Southwest
Mon 7/275:30 pm
DEN
- ONT
1 stop3h 40m
Southwest
Deal found 3/27![Southwest logo]()
$443
Last-minute flights from Ontario to PuebloDiscover last-minute flight deals from Ontario to Pueblo. Data last updated April 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Pueblo. Data last updated April 1, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 3/30. 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.
Wed 4/1512:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 4/206:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/30![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 3/28. 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.
Wed 4/1512:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Sat 4/2510:29 pm
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/28![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 3/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:33 pm
ONT
- DEN
Nonstop2h 25m
Frontier
Sun 4/196:00 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/31![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 3/28. 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.
Fri 4/1712:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 4/273:53 pm
DEN
- ONT
1 stop8h 50m
Frontier
Deal found 3/28![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 3/29. 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.
Sun 4/1912:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 4/206:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/29![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 4/2710:29 pm
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/30![Frontier logo]()
$91
This deal was found by Cheapflights users on 3/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 5/46:26 am
DEN
- ONT
1 stop6h 01m
Frontier
Deal found 3/29![Frontier logo]()
$101
This Frontier deal was found by Cheapflights users on 3/30. 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 4/2912:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Sat 5/210:29 pm
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/30![Frontier logo]()
$90
This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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.
Fri 5/112:59 am
ONT
- DEN
Nonstop2h 16m
Frontier
Mon 5/46:05 am
DEN
- ONT
Nonstop2h 26m
Frontier
Deal found 3/28![Frontier logo]()
$102
This Frontier deal was found by Cheapflights users on 3/28. 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 5/126:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Tue 5/198:41 am
DEN
- ONT
Nonstop2h 24m
Frontier
Deal found 3/28![Frontier logo]()
$89
This Trip.com deal was found by Cheapflights users on 3/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
ONT
- DEN
Nonstop2h 22m
Frontier
Tue 5/268:41 am
DEN
- ONT
Nonstop2h 24m
Frontier
Deal found 3/29![Frontier logo]()
$95
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 April 1, 2026.
Search for one-way flight options from Ontario to Pueblo. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
This Trip.com deal was found by Cheapflights users on 3/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:10 am
ONT
- DEN
1 stop12h 10m
Frontier
Deal found 3/29![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Tue 5/264:39 pm
ONT
- DEN
1 stop9h 46m
Frontier
Deal found 3/30![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:44 am
ONT
- DEN
1 stop20h 21m
Frontier
Deal found 3/29![Frontier logo]()
$84
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:30 pm
ONT
- DEN
Nonstop2h 21m
United Airlines
Deal found 3/31![United Airlines logo]()
$85
This Super.com deal was found by Cheapflights users on 3/30. 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.
Thu 4/167:49 pm
ONT
- DEN
1 stop7h 10m
Frontier
Deal found 3/30![Frontier logo]()
$89
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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.
Tue 4/148:15 am
ONT
- DEN
1 stop8h 25m
Frontier
Deal found 3/30![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 6/63:30 pm
ONT
- DEN
1 stop7h 39m
Frontier
Deal found 3/30![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 3/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:10 pm
ONT
- DEN
1 stop13h 57m
Frontier
Deal found 3/27![Frontier logo]()
$95
This Cheapflightsfares deal was found by Cheapflights users on 3/29. 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.
Sat 4/187:44 pm
ONT
- DEN
1 stop7h 15m
Frontier
Deal found 3/29![Frontier logo]()
$96
This Jettzy deal was found by Cheapflights users on 3/29. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:06 pm
ONT
- DEN
1 stop11h 00m
Frontier
Deal found 3/29![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:00 am
ONT
- DEN
1 stop6h 34m
Frontier
Deal found 3/29![Frontier logo]()
$98
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 April 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $89 (Frontier) |
One-way from | $79 (Trip.com) |
Popular in | March |
Cheapest in | September |
Average price | $171 |
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 April 1, 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
Mon 5/4
1:55 pm-7:15 pm
1 stop4h 20m
Denver Intl
Tue 5/12
6:45 am-11:35 am
2 stops5h 50m
$224
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Fri 5/1
3:00 pm-8:45 pm
1 stop4h 45m
Denver Intl
Tue 5/5
6:45 am-11:35 am
2 stops5h 50m
$253
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 5/2
10:15 am-4:45 pm
2 stops5h 30m
Denver Intl
Tue 5/19
2:05 pm-6:55 pm
2 stops5h 50m
$269
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 4/14
5:05 pm-10:29 pm
1 stop4h 24m
Denver Intl
Mon 4/20
6:27 pm-11:44 pm
1 stop6h 17m
$278
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 4/25
1:34 pm-4:56 pm
Nonstop2h 22m
Denver Intl
Mon 4/27
7:10 pm-8:36 pm
Nonstop2h 26m
$280
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 4/15
6:00 am-11:32 am
1 stop4h 32m
Denver Intl
Wed 4/22
6:27 pm-11:44 pm
1 stop6h 17m
$300
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 5/21
1:18 pm-4:38 pm
Nonstop2h 20m
Denver Intl
Tue 5/26
4:05 pm-5:28 pm
Nonstop2h 23m
$318
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Mon 4/27
3:55 pm-11:05 pm
1 stop6h 10m
Denver Intl
Mon 5/4
11:05 am-4:25 pm
2 stops6h 20m
$326
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Tue 5/12
5:00 am-8:22 am
Nonstop2h 22m
Denver Intl
Fri 5/15
11:15 am-12:38 pm
Nonstop2h 23m
$341
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 4/15
1:34 pm-4:56 pm
Nonstop2h 22m
Denver Intl
Sat 4/18
11:15 am-12:38 pm
Nonstop2h 23m
$397
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.
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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 far ahead should I book a flight from Ontario to Pueblo?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Pueblo. Price data was last updated on March 13, 2026.
The best time to book flights from Ontario to Pueblo 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 Pueblo?
Currently, August is the cheapest month in which you can book a flight from Ontario to Pueblo (average of $45). Flying from Ontario to Pueblo in September is currently the most expensive (average of $158). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from 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 April 1, 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.
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
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 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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Alternative routes for Ontario to Pueblo
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Pueblo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Pueblo by cabin class
Find flights from Ontario to Pueblo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Pueblo flights
Browse other Ontario and Pueblo flight options. Last updated on April 1, 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 April 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Pueblo flights
Consider these flights traveling from Ontario to Pueblo.
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 April 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$109 | Average$272 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$196 | Average$381 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$219 | Average$361 | FlexibilityNo cancel fee | On-time63% |