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$46+ Cheap flights from Ontario (ONT) to Colorado

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DEN
Oct 7 — Oct 141
From?
To?
Mon 10/7
Mon 10/14
1 adult, Economy
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Cheap Ontario to Colorado flights in October & November 2024

Find cheap flight options from Ontario to Colorado specifically for the months of October and November 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,666,977 searches. Prices were last updated on October 2, 2024.
Scroll through some of the best deals on flights from Ontario to Colorado in 2024. Check back soon for alternative fares.
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/306:30 amONT - DEN
Nonstop2h 22mFrontier
Sun 11/310:32 pmDEN - ONT
Nonstop2h 20mFrontier
Deal found 10/2$75
This Southwest deal was found by Cheapflights users on 10/1. 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.
Fri 11/81:45 pmONT - COS
1 stop8h 25mSouthwest
Mon 11/117:10 pmCOS - ONT
1 stop5h 25mSouthwest
Deal found 10/1$287
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/146:05 amONT - ASE
1 stop6h 43mAmerican Airlines
Sun 11/172:24 pmASE - ONT
1 stop8h 50mAmerican Airlines
Deal found 10/2$298
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/29:50 amONT - COS
2 stops9h 42mAmerican Airlines
Fri 11/84:43 pmCOS - ONT
1 stop6h 31mAmerican Airlines
Deal found 10/1$307
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/135:05 amONT - COS
1 stop8h 17mUnited Airlines
Sat 11/161:22 pmCOS - ONT
1 stop8h 22mUnited Airlines
Deal found 10/1$315
This Delta deal was found by Cheapflights users on 9/30. 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.
Thu 11/71:20 pmONT - COS
1 stop5h 17mDelta
Sat 11/98:20 amCOS - ONT
1 stop4h 37mDelta
Deal found 9/30$316
This United deal was found by Cheapflights users on 9/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/95:05 amONT - EGE
1 stop6h 29mUnited Airlines
Sat 11/167:19 amEGE - ONT
1 stop6h 21mUnited Airlines
Deal found 9/30$324
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/147:40 pmONT - DRO
1 stop3h 34mAmerican Airlines
Mon 10/215:45 amDRO - ONT
1 stop4h 15mAmerican Airlines
Deal found 10/2$373
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/121:42 pmONT - GJT
1 stop5h 55mUnited Airlines
Tue 11/197:00 amGJT - ONT
1 stop6h 40mUnited Airlines
Deal found 10/1$396

Ontario to Colorado 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Colorado in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,666,977 searches. Data last updated October 2, 2024.
Scroll through some of the best deals on flights from Ontario to Colorado in 2024. Check back soon for alternative fares.
This Cheapflightsfares deal was found by Cheapflights users on 10/1. 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.
Thu 10/316:10 pmONT - DEN
Nonstop2h 22mFrontier
Fri 11/16:00 amDEN - ONT
Nonstop2h 25mFrontier
Deal found 10/1$77
This Expedia deal was found by Cheapflights users on 10/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1312:49 amONT - DEN
Nonstop2h 21mMultiple Airlines
Sun 1/197:00 amDEN - ONT
1 stop9h 16mMultiple Airlines
Deal found 10/1$192
This Southwest deal was found by Cheapflights users on 10/2. 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.
Tue 12/39:05 amONT - COS
1 stop4h 00mSouthwest
Sat 12/74:35 pmCOS - ONT
1 stop4h 25mSouthwest
Deal found 10/2$243
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/146:05 amONT - ASE
1 stop6h 43mAmerican Airlines
Sun 11/172:24 pmASE - ONT
1 stop8h 50mAmerican Airlines
Deal found 10/2$298
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/29:50 amONT - COS
2 stops9h 42mAmerican Airlines
Fri 11/84:43 pmCOS - ONT
1 stop6h 31mAmerican Airlines
Deal found 10/1$307
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/135:05 amONT - COS
1 stop8h 17mUnited Airlines
Sat 11/161:22 pmCOS - ONT
1 stop8h 22mUnited Airlines
Deal found 10/1$315
This Delta deal was found by Cheapflights users on 9/30. 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.
Thu 11/71:20 pmONT - COS
1 stop5h 17mDelta
Sat 11/98:20 amCOS - ONT
1 stop4h 37mDelta
Deal found 9/30$316
This United deal was found by Cheapflights users on 10/2. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/91:42 pmONT - EGE
1 stop5h 22mUnited Airlines
Sat 11/163:22 pmEGE - ONT
1 stop6h 22mUnited Airlines
Deal found 10/2$324
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/106:10 amONT - DRO
1 stop4h 29mAmerican Airlines
Fri 12/206:00 amDRO - ONT
1 stop4h 12mAmerican Airlines
Deal found 10/1$344

Ontario to Colorado flights leaving soon

Find last-minute flight options from Ontario to Colorado for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,666,977 searches. Data last updated October 2, 2024.
Consider one of these great deals we found on last-minute flights from Ontario to Colorado. Users should be sure to double check the price, date, and time of their last-minute flight.
This Cheapflightsfares deal was found by Cheapflights users on 10/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/166:30 amONT - DEN
Nonstop2h 22mFrontier
Wed 10/1610:38 pmDEN - ONT
Nonstop2h 20mFrontier
Deal found 10/2$57
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/115:15 amONT - ASE
1 stop4h 21mUnited Airlines
Tue 10/152:34 pmASE - ONT
1 stop6h 58mUnited Airlines
Deal found 10/1$493
This Southwest deal was found by Cheapflights users on 10/2. 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.
Thu 10/104:55 pmONT - COS
1 stop5h 25mSouthwest
Wed 10/167:30 amCOS - ONT
1 stop6h 15mSouthwest
Deal found 10/2$536
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/126:20 pmONT - GJT
1 stop25h 00mUnited Airlines
Wed 10/167:00 amGJT - ONT
1 stop6h 32mUnited Airlines
Deal found 10/1$552
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/96:20 pmONT - COS
1 stop4h 37mUnited Airlines
Fri 10/1112:55 pmCOS - ONT
1 stop5h 22mUnited Airlines
Deal found 10/1$561
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/75:15 amONT - DRO
1 stop6h 12mUnited Airlines
Sun 10/205:30 amDRO - ONT
1 stop16h 02mUnited Airlines
Deal found 10/1$607
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/86:30 amONT - COS
2 stops8h 43mAmerican Airlines
Fri 10/116:01 amCOS - ONT
1 stop8h 48mAmerican Airlines
Deal found 10/2$631
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/812:30 pmONT - GJT
2 stops9h 14mAmerican Airlines
Fri 10/1112:26 pmGJT - ONT
2 stops10h 33mAmerican Airlines
Deal found 10/2$762
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/115:15 amONT - MTJ
1 stop14h 03mUnited Airlines
Sat 10/121:26 pmMTJ - ONT
1 stop8h 06mUnited Airlines
Deal found 10/1$767

One-way flights to Colorado from Ontario

Search for one-way flight options from Ontario to Colorado. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,666,977 searches. Data last updated October 2, 2024.
Users in need of a one-way flight from Ontario to Colorado can choose from these deals. Users in need of a round-trip flight from Ontario to Colorado instead should update the search form at the top of page.
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/54:08 pmONT - DEN
Nonstop2h 18mFrontier
Deal found 10/2$46
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/110:02 amONT - DEN
1 stop4h 13mAmerican Airlines
Deal found 10/2$79
This Alaska Airlines deal was found by Cheapflights users on 10/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/82:19 pmONT - DEN
1 stop8h 10mAlaska Airlines
Deal found 10/1$81
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/15:05 amONT - DEN
Nonstop2h 20mUnited Airlines
Deal found 10/1$90
This Delta deal was found by Cheapflights users on 10/2. 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.
Thu 11/281:18 pmONT - DEN
1 stop4h 35mDelta
Deal found 10/2$98
This Southwest deal was found by Cheapflights users on 10/1. 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.
Tue 12/244:05 pmONT - COS
1 stop5h 15mSouthwest
Deal found 10/1$136
This Southwest deal was found by Cheapflights users on 9/30. 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.
Wed 10/307:20 amONT - DEN
2 stops6h 30mSouthwest
Deal found 9/30$143
This Delta deal was found by Cheapflights users on 10/1. 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.
Thu 10/311:28 pmONT - COS
1 stop5h 09mDelta
Deal found 10/1$148
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/301:42 pmONT - COS
1 stop18h 02mUnited Airlines
Deal found 10/1$169

Find flights from Ontario to Colorado within your budget

Customize your flight search to find flights from Ontario to Colorado 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 2,666,977 searches. Data last updated October 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$66 - $315

Route

Depart

Return

Price

OntarioDenver Intl

ONT - DEN

ONTDEN

Ontario

Sat 10/26

Nonstop2h 22m

Denver Intl

Fri 11/1

Nonstop2h 25m

$66

OntarioDenver Intl

ONT - DEN

ONTDEN

Ontario

Fri 12/13

Nonstop2h 21m

Denver Intl

Sun 1/19

1 stop9h 16m

$192

OntarioDenver Intl

ONT - DEN

ONTDEN

Ontario

Sun 11/17

Nonstop2h 20m

Denver Intl

Thu 11/21

1 stop4h 54m

$209

OntarioDenver Intl

ONT - DEN

ONTDEN

Ontario

Wed 11/13

2 stops14h 13m

Denver Intl

Sat 11/16

1 stop11h 35m

$214

OntarioColorado Springs

ONT - COS

ONTCOS

Ontario

Thu 1/9

1 stop8h 17m

Colorado Springs

Mon 1/13

1 stop6h 35m

$238

OntarioColorado Springs

ONT - COS

ONTCOS

Ontario

Tue 12/3

1 stop4h 00m

Colorado Springs

Sat 12/7

1 stop4h 25m

$243

OntarioColorado Springs

ONT - COS

ONTCOS

Ontario

Wed 2/12

1 stop4h 55m

Colorado Springs

Wed 2/19

1 stop5h 28m

$296

OntarioAspen Pitkin County

ONT - ASE

ONTASE

Ontario

Thu 11/14

1 stop6h 43m

Aspen Pitkin County

Sun 11/17

1 stop8h 50m

$298

OntarioColorado Springs

ONT - COS

ONTCOS

Ontario

Wed 11/13

1 stop8h 17m

Colorado Springs

Sat 11/16

1 stop8h 22m

$315

Flights are sorted by cheapest first

Deals found on 10/1

Best time to book a flight from Ontario to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado 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.

Travel insights for flights from Ontario to Colorado

Get recent, data-driven insights about flights from Ontario to Colorado including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario to Colorado?

Currently, December is the cheapest month in which you can book a flight from Ontario to Colorado (average of $19). Flying from Ontario to Colorado in February is currently the most expensive (average of $65). 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 CO?

Find hourly flight availability from Ontario to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 2, 2024.

It’s typically best to fly out from Ontario to Colorado in the afternoon. Doing so could potentially save you 21% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Ontario to Colorado?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Colorado. Price data was last updated on September 29, 2024.

Travelers seeking maximum savings on their Ontario to Colorado flight should consider departing on Tuesday evenings 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.

Find deals

Weekly flight availability from Ontario to Colorado

Explore weekly flight availability from Ontario to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 2, 2024.

The most flights from ONT to USCO are scheduled on a Wednesday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

What are the most popular airlines that fly from Ontario to Colorado?

Our users search for these airlines the most when looking for flights from Ontario to Colorado. Data last updated on October 2, 2024.

Frontier, United Airlines and American Airlines are the most popular airlines when flying from Ontario to Colorado.

Frontier

Frontier

From $49

United Airlines

United Airlines

From $149

American Airlines

American Airlines

From $196

Southwest

Southwest

From $178

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated October 2, 2024.
Get a feel of what it's like to fly with Frontier, United Airlines and Alaska Airlines from Ontario to Colorado by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
5,246 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.2
Very good
5,246 reviews
Southwest
8.2
Very good
5,246 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,377 reviews
Southwest
8.2
Very good
5,246 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
9,007 reviews
Southwest
8.2
Very good
5,246 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,390 reviews
Southwest
8.2
Very good
5,246 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.3
Good
10,000 reviews
Southwest
8.2
Very good
5,246 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Colorado. 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 Colorado?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Colorado.

  • Can I find flights from Ontario to Colorado for under $100 on Cheapflights?

    Yes, there are multiple flights from Ontario to Colorado for under $100. The cheapest flight booked recently is on Frontier for just $66, but on average you can expect to pay $347.

  • Are there nonstop flights from Ontario to Colorado for under $100 on Cheapflights?

    Cheapflights has at least 2 direct flights from Ontario to Colorado under $100. A good price for a nonstop flight from Ontario to Colorado is less than $141.

  • Are there last-minute flights available from Ontario to Colorado for under $100?

    There are currently 12+ open flights from Ontario to Colorado within the next 7 days for less than $100.

  • What days are nonstop flights available from Ontario to Colorado?

    Days when nonstop flights are available for this flight are: Wednesday, Thursday, Friday, Saturday.

  • How popular is this Ontario to Colorado flight route?

    The Ontario to Colorado flight path was viewed by 328 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How many flights depart from Ontario to Colorado on average per day?

    On average 7 flights depart from Ontario to Colorado per day.
    Early Morning (Midnight to 6am) - 29% of flight departures
    Evening (6pm - Midnight) - 71% of flight departures

  • How long is the flight from Ontario to Colorado?

    Airlines like Frontier, United Airlines, and Alaska Airlines fly from Ontario to Colorado in about 2h 20m. The time it takes to get you to your destination can typically vary by up to 11h 53m. The distance from Ontario to Colorado is about 822 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 Colorado one-way?

    The cheapest airlines for a one-way flight from Ontario to Colorado are Frontier ($46), American Airlines ($79), and Alaska Airlines ($81).

  • What are the most popular routes from Ontario to Colorado?

    The most popular route from Ontario to Colorado is Ontario - Denver Intl. You may also consider Ontario - Colorado Springs or Ontario - Aspen Pitkin County.

  • What are the most reliable airlines from Ontario to Colorado?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ontario to Colorado on time: Air Canada (89%), Southwest (89%), United Airlines (87%).

  • What are the cheapest flights from Ontario to Colorado?

    Looking at all options, your cheapest flight can be booked for $49. While the most popular route (Ontario - Denver Intl) can be booked for $66 on average our data indicates $630 when flying from Ontario to Colorado.

  • What does ONT to DEN mean?

    This is defined as Ontario Airport (ONT) and Denver Intl Airport (DEN). Codes like Denver Intl Airport are often used to just call airports uniquely. Colorado Springs Airport (COS), Grand Junction Regnl Airport (GJT), Aspen Pitkin County Airport (ASE), Durango La Plata County Airport (DRO), Vail Eagle County Airport (EGE) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Ontario to Colorado that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Colorado flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Colorado with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Colorado flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from Ontario to Colorado that allow pets onboard?

    Many airlines flying from Ontario to Colorado offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Colorado?

    Yes, you can often find last-minute deals on Ontario to Colorado flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Colorado flight deals updated?

    The Ontario to Colorado flight deals you see on this page were last updated on 10/2.

  • What is the cheapest month to book a flight from Ontario to Colorado?

    Currently, December is the cheapest month in which you can book a flight from Ontario to Colorado (average of $19). Flying from Ontario to Colorado in February is currently the most expensive (average of $65). 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.

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