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$131+ Cheap flights from Ontario to Denver (DEN)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DEN
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
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Cheap flight deals from Ontario to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 19, 2024.

Round-trip from

$290
(Kiwi.com)

One-way from

$131
(Kiwi.com)
From Ontario to Denver Intl
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One-way flight from Ontario to Denver Intl
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Find flight deals from Ontario to Denver

Cheapest flights from Ontario to Denver
Explore the most affordable flight options available from Ontario to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 19, 2024.

This Kiwi.com deal was found by Cheapflights users on 12/18. 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.
Mon 12/3010:35 pmYYZ - DEN
2 stops31h 19mMultiple Airlines
Tue 1/146:00 amDEN - YYZ
1 stop13h 50mMultiple Airlines
Deal found 12/18$364
This Air Canada deal was found by Cheapflights users on 12/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/308:35 amYYZ - DEN
Nonstop3h 53mAir Canada
Tue 1/1411:46 amDEN - YYZ
1 stop9h 36mAir Canada
Deal found 12/18$594
This Kiwi.com deal was found by Cheapflights users on 12/18. 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 12/249:20 amYOW - DEN
2 stops13h 42mMultiple Airlines
Tue 12/3110:26 pmDEN - YOW
1 stop16h 19mMultiple Airlines
Deal found 12/18$611
This Kiwi.com deal was found by Cheapflights users on 12/18. 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 12/276:45 amYUL - DEN
2 stops27h 07mMultiple Airlines
Fri 1/310:21 pmDEN - YUL
1 stop16h 14mMultiple Airlines
Deal found 12/18$687
This United Airlines deal was found by Cheapflights users on 12/18. 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 12/282:45 pmYYZ - DEN
Nonstop3h 53mUnited Airlines
Wed 1/17:50 amDEN - YYZ
1 stop5h 55mUnited Airlines
Deal found 12/18$690
This WestJet deal was found by Cheapflights users on 12/18. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3010:30 amYYZ - DEN
2 stops30h 44mWestJet
Tue 1/146:05 pmDEN - YYZ
2 stops23h 01mWestJet
Deal found 12/18$710
This Air Canada deal was found by Cheapflights users on 12/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/225:45 amYOW - DEN
1 stop6h 50mAir Canada
Wed 1/111:15 amDEN - YOW
1 stop6h 07mAir Canada
Deal found 12/18$731
This American Airlines deal was found by Cheapflights users on 12/18. 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 12/256:15 amYYZ - DEN
1 stop9h 17mAmerican Airlines
Fri 12/275:00 amDEN - YYZ
1 stop9h 19mAmerican Airlines
Deal found 12/18$770
This Delta deal was found by Cheapflights users on 12/18. 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 12/256:00 amYYZ - DEN
1 stop10h 10mDelta
Thu 12/2612:20 amDEN - YYZ
1 stop6h 49mDelta
Deal found 12/18$860
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/205:30 amYOW - DEN
1 stop6h 58mUnited Airlines
Fri 12/276:00 amDEN - YOW
2 stops13h 37mUnited Airlines
Deal found 12/19$882
This WestJet deal was found by Cheapflights users on 12/18. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/226:15 amYOW - DEN
2 stops18h 43mWestJet
Wed 1/112:10 pmDEN - YOW
2 stops26h 38mWestJet
Deal found 12/18$885
This Mytrip deal was found by Cheapflights users on 12/18. 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.
Tue 12/246:45 amYTZ - DEN
2 stops12h 32mMultiple Airlines
Fri 12/276:45 pmDEN - YTZ
3 stops22h 08mMultiple Airlines
Deal found 12/18$886

Find flights from Ontario to Denver within your budget

Customize your flight search to find flights from Ontario to Denver 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 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Wed 1/8

6:10 pm-9:29 am

1 stop17h 19m

Denver Intl

Sun 1/12

10:42 pm-4:45 pm

1 stop16h 03m

$290

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Mon 2/3

1:30 pm-1:24 am

2 stops13h 54m

Denver Intl

Thu 2/6

6:00 am-4:35 pm

1 stop8h 35m

$319

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Fri 5/30

6:45 am-6:52 pm

2 stops14h 07m

Denver Intl

Thu 6/5

12:15 pm-12:43 am

1 stop10h 28m

$328

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Fri 1/10

2:00 pm-1:24 am

2 stops13h 24m

Denver Intl

Sat 1/11

12:50 am-1:55 pm

1 stop11h 05m

$352

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 1/9

6:46 pm-10:13 am

1 stop17h 27m

Denver Intl

Wed 1/15

7:05 am-8:31 pm

1 stop11h 26m

$364

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Tue 2/18

7:14 am-7:03 pm

1 stop13h 49m

Denver Intl

Tue 2/25

6:00 am-4:55 pm

2 stops8h 55m

$380

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Mon 3/10

4:10 pm-11:49 pm

1 stop9h 39m

Denver Intl

Tue 3/25

5:38 pm-2:50 pm

1 stop19h 12m

$414

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 1/16

8:35 am-10:28 am

Nonstop3h 53m

Denver Intl

Thu 1/23

5:40 pm-10:52 pm

Nonstop3h 12m

$418

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Fri 3/21

1:05 pm-9:58 pm

1 stop10h 53m

Denver Intl

Mon 3/24

5:40 pm-10:52 pm

Nonstop3h 12m

$421

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

Fri 2/7

11:20 am-8:12 pm

1 stop10h 52m

Denver Intl

Sun 2/16

8:55 pm-3:47 pm

1 stop16h 52m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 42 results
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Best time to book a flight from Ontario to Denver

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

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

What is the cheapest month to book a flight from Region of Ontario to Denver?

Currently, October is the cheapest month in which you can book a flight from Region of Ontario to Denver (average of $197). Flying from Region of Ontario to Denver in March is currently the most expensive (average of $278). 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 ON to DEN?

Find hourly flight availability from Ontario to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 19, 2024.

When flying from Region of Ontario to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Region of Ontario to Denver

Explore weekly flight availability from Ontario to Denver. 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 December 19, 2024.

The most flights from CAON to DEN are scheduled on a Monday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Denver by month

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

In terms of precipitation, rainfall in Denver 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 Denver when rainfall is around 0.5 in.

Temperature in Denver by month

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

If weather is an important factor for your trip to Denver, 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 Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated December 19, 2024.
Read reviews from past customers who have flown United Airlines, WestJet and Delta from Ontario to Denver. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,551 reviews

Boarding

8.2

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Alaska Airlines
8.0
Very good
9,551 reviews
Alaska Airlines
8.0
Very good
9,551 reviews

Boarding

8.2

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Delta
8.0
Very good
8,600 reviews
Alaska Airlines
8.0
Very good
9,551 reviews

Boarding

8.2

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

United Airlines
7.4
Good
9,048 reviews
Alaska Airlines
8.0
Very good
9,551 reviews

Boarding

8.2

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

WestJet
7.3
Good
2,819 reviews
Alaska Airlines
8.0
Very good
9,551 reviews

Boarding

8.2

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,551 reviews

Boarding

8.2

Food

7.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Denver. 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 into for flights to Denver from Ontario?

    For a flight from Ontario to Denver, you will be flying into Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city.

  • What are the cheapest airlines to fly from Region of Ontario to Denver one-way?

    $220 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and Alaska Airlines, with prices starting from $221 and $226, respectively.

  • What are the most popular routes from Region of Ontario to Denver?

    While some choose either Montreal Pierre Elliott Trudeau Intl - Denver Intl or Ottawa - Denver Intl, Toronto Pearson Intl - Denver Intl is the most popular route from Region of Ontario to Denver.

  • What are the most reliable airlines from Region of Ontario to Denver?

    The top 3 most reliable airlines when flying from Region of Ontario to Denver are Air Canada (77%), United Airlines (77%) and Austrian Airlines (64%).

  • What are the cheapest flights from Region of Ontario to Denver?

    Looking for the cheapest flight from Region of Ontario to Denver? While on average our users pay $1,033, our data indicates the cheapest price to be $233. The most popular route (Toronto Pearson Intl - Denver Intl), is priced around $241.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Denver 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 Region of Ontario to Denver?

    Currently, October is the cheapest month in which you can book a flight from Region of Ontario to Denver (average of $197). Flying from Region of Ontario to Denver in March is currently the most expensive (average of $278). 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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Alternative routes for Ontario to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ontario to Denver

Discover the top 2 airlines that operate flights from Ontario to Denver. 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 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$234Average$478FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$254Average$487FlexibilityNo cancel feeOn-time67%
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