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Pueblo

$63+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — COS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Ontario to Pueblo are usually found in January or February, booked 88 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Ontario to Pueblo

Cheapest flights from Ontario to Pueblo
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 December 18, 2025.

This CheapOair deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:00 amONT - DEN
1 stop20h 58mFrontier
Tue 1/68:45 pmDEN - ONT
Nonstop2h 27mFrontier
Deal found 12/16$111
This Flightnetwork deal was found by Cheapflights users on 12/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 amONT - DEN
1 stop20h 58mFrontier
Wed 1/79:45 pmDEN - ONT
Nonstop2h 29mFrontier
Deal found 12/16$116
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amONT - DEN
1 stop20h 58mFrontier
Wed 1/79:45 pmDEN - ONT
Nonstop2h 29mFrontier
Deal found 12/16$117
This Orbitz deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 amONT - DEN
1 stop20h 58mFrontier
Mon 1/1210:29 pmDEN - ONT
Nonstop2h 27mFrontier
Deal found 12/16$121
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/306:00 amONT - DEN
1 stop20h 58mFrontier
Tue 1/139:20 pmDEN - ONT
Nonstop2h 39mFrontier
Deal found 12/16$123
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/316:00 amONT - DEN
1 stop20h 58mFrontier
Tue 1/139:20 pmDEN - ONT
Nonstop2h 39mFrontier
Deal found 12/16$124
This CheapOair deal was found by Cheapflights users on 12/17. 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 12/246:00 amONT - DEN
1 stop20h 58mFrontier
Fri 1/2310:49 pmDEN - ONT
Nonstop2h 31mFrontier
Deal found 12/17$126
This Frontier deal was found by Cheapflights users on 12/16. 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 12/296:00 pmONT - DEN
1 stop4h 33mFrontier
Wed 1/149:20 pmDEN - ONT
Nonstop2h 39mFrontier
Deal found 12/16$131
This Frontier deal was found by Cheapflights users on 12/17. 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 12/256:07 pmONT - DEN
1 stop4h 26mFrontier
Wed 1/79:45 pmDEN - ONT
Nonstop2h 29mFrontier
Deal found 12/17$135
This Frontier deal was found by Cheapflights users on 12/16. 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 12/296:00 pmONT - DEN
1 stop4h 33mFrontier
Mon 1/1210:29 pmDEN - ONT
Nonstop2h 27mFrontier
Deal found 12/16$142

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 December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$81
(CheapOair)

One-way from

$63
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$197
Provider with most accurate pricing for Los Angeles-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Denver Intl flights.
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From Ontario to Pueblo
Search Deals
One-way flight from Ontario to Pueblo
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 2025.
Use the filters below to find and compare flights from Ontario to Pueblo that are best for you.

Fly from

Ontario

Fly to

Pueblo

Route

Depart

Return

Price

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Wed 1/14

8:55 am-12:10 pm

Nonstop2h 15m

Denver Intl

Wed 1/21

8:45 am-10:20 am

Nonstop2h 35m

$151

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sat 1/24

4:03 pm-11:35 pm

1 stop6h 32m

Denver Intl

Tue 1/27

7:00 am-3:08 pm

1 stop9h 08m

$173

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sat 2/21

5:00 am-8:16 am

Nonstop2h 16m

Denver Intl

Fri 2/27

7:20 pm-8:50 pm

Nonstop2h 30m

$177

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sat 1/10

6:27 am-11:34 am

1 stop4h 07m

Denver Intl

Tue 1/13

2:06 pm-6:20 pm

1 stop5h 14m

$193

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Fri 1/30

4:03 pm-11:35 pm

1 stop6h 32m

Denver Intl

Tue 2/3

11:49 am-5:03 pm

1 stop6h 14m

$193

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sat 2/28

6:20 am-3:45 pm

2 stops8h 25m

Denver Intl

Wed 3/4

6:00 am-9:20 am

1 stop4h 20m

$197

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sat 1/10

3:30 pm-11:25 pm

1 stop6h 55m

Denver Intl

Tue 1/13

6:29 am-1:56 pm

1 stop8h 27m

$205

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sat 1/10

6:00 am-11:47 am

1 stop4h 47m

Denver Intl

Wed 1/14

7:00 am-12:16 pm

1 stop6h 16m

$205

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Wed 1/14

1:11 pm-7:56 pm

1 stop5h 45m

Denver Intl

Thu 1/15

7:00 am-12:16 pm

1 stop6h 16m

$205

OntarioDenver

ONT - DEN

ONTDEN

Ontario

Sat 4/4

6:00 am-9:26 am

Nonstop2h 26m

Denver Intl

Sat 4/11

5:35 pm-9:17 pm

1 stop4h 42m

$206

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 21 results
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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.
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

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 December 12, 2025.

The best time to book flights from Ontario to Pueblo is 88 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.

What is the cheapest time of day to fly from ONT to PU5?

Find hourly flight availability from Ontario to Pueblo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Pueblo in the afternoon. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight at noon.

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 December 18, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines 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.
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,091 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,081 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • What airport do you fly from for flights from Ontario to Pueblo?

    If you book a flight to Pueblo from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 2 flights from Ontario to Pueblo per day from 3 different airlines.

  • How long is the flight from Ontario to Pueblo?

    Departing from Ontario to Pueblo will take you 2h 15m. The distance between Ontario and Pueblo is about 817 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Ontario to Pueblo one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $36. Users have also found prices from $68 and $78 on Southwest and United Airlines, respectively.

  • Can I find deals for flights from Ontario to Pueblo that include hotel bookings?

    Yes. In addition to deals on Ontario to Pueblo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Pueblo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Pueblo.

  • Can I find deals for business class flights from Ontario to Pueblo?

    Yes. Cheapflights offers flight deals from Ontario to Pueblo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$109Average$272FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$391FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$236Average$366FlexibilityNo cancel feeOn-time63%

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