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$103+ Cheap flights from Denver (DEN) to Ontario

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YYZ
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Denver to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Ontario (CAON). 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 22, 2024.

Round-trip from

$253
(Kiwi.com)

One-way from

$103
(Kiwi.com)
From Denver Intl to Ontario
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One-way flight from Denver Intl to Ontario
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Find flight deals from Denver to Ontario

Cheapest flights from Denver to Ontario
Explore the most affordable flight options available from Denver to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2024.

This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/286:55 amDEN - YYZ
1 stop9h 55mMultiple Airlines
Wed 1/110:05 pmYYZ - DEN
2 stops31h 49mMultiple Airlines
Deal found 12/21$508
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/316:44 pmDEN - YOW
2 stops23h 25mMultiple Airlines
Fri 1/34:25 pmYOW - DEN
1 stop9h 09mMultiple Airlines
Deal found 12/21$655
This Air Canada deal was found by Cheapflights users on 12/21. 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.
Tue 12/3111:25 amDEN - YOW
1 stop5h 33mAir Canada
Fri 1/35:45 amYOW - DEN
1 stop6h 50mAir Canada
Deal found 12/21$700
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/286:55 amDEN - YUL
1 stop14h 20mMultiple Airlines
Sat 1/45:35 pmYUL - DEN
1 stop12h 19mMultiple Airlines
Deal found 12/21$724
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/2810:21 pmDEN - YTZ
2 stops22h 02mMultiple Airlines
Wed 1/13:55 pmYTZ - DEN
1 stop10h 25mMultiple Airlines
Deal found 12/21$726
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/316:00 amDEN - YOW
2 stops13h 37mUnited Airlines
Fri 1/36:00 amYOW - DEN
2 stops8h 42mUnited Airlines
Deal found 12/21$736
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:19 pmDEN - YUL
1 stop5h 24mWestJet
Wed 1/86:00 amYUL - DEN
1 stop13h 03mWestJet
Deal found 12/21$770
This American Airlines deal was found by Cheapflights users on 12/21. 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 12/3110:22 amDEN - YUL
1 stop10h 28mAmerican Airlines
Wed 1/82:20 pmYUL - DEN
1 stop21h 03mAmerican Airlines
Deal found 12/21$802
This Delta deal was found by Cheapflights users on 12/21. 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.
Sun 12/2912:20 amDEN - YUL
2 stops9h 54mDelta
Wed 1/811:20 amYUL - DEN
1 stop11h 25mDelta
Deal found 12/21$950
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/242:00 pmDEN - YYZ
1 stop7h 08mWestJet
Mon 12/305:00 pmYYZ - DEN
1 stop7h 58mWestJet
Deal found 12/21$987
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Sun 12/296:50 amDEN - YYZ
1 stop6h 55mAmerican Airlines
Thu 1/211:40 amYYZ - DEN
1 stop13h 27mAmerican Airlines
Deal found 12/21$988
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/287:50 amDEN - YYZ
1 stop5h 55mUnited Airlines
Wed 1/14:10 pmYYZ - DEN
Nonstop4h 02mUnited Airlines
Deal found 12/21$1,011

Find flights from Denver to Ontario within your budget

Customize your flight search to find flights from Denver to Ontario 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 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Mon 1/13

7:50 pm-6:46 am

1 stop8h 56m

Toronto Pearson Intl

Sat 1/18

6:30 am-9:03 pm

2 stops16h 33m

$253

DenverOttawa

DEN - YOW

DENYOW

Denver Intl

Sat 1/25

12:23 pm-2:20 pm

1 stop23h 57m

Ottawa

Mon 1/27

4:20 pm-8:44 am

1 stop18h 24m

$274

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Mon 1/20

10:41 pm-4:35 pm

1 stop15h 54m

Montreal Pierre Elliott Trudeau Intl

Mon 1/27

1:30 pm-9:27 am

2 stops21h 57m

$297

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Thu 6/19

7:40 pm-4:27 pm

1 stop18h 47m

Montreal Pierre Elliott Trudeau Intl

Mon 6/23

5:30 pm-11:27 am

1 stop19h 57m

$396

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Wed 6/18

7:15 pm-5:30 pm

1 stop20h 15m

Toronto Pearson Intl

Sun 6/22

6:36 pm-9:19 am

1 stop16h 43m

$398

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Thu 2/6

7:05 am-8:28 pm

1 stop11h 23m

Toronto Pearson Intl

Mon 2/10

7:55 am-4:34 pm

1 stop10h 39m

$440

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 3/7

7:55 pm-2:55 pm

1 stop17h 00m

Toronto Pearson Intl

Wed 3/19

4:05 pm-11:58 pm

1 stop9h 53m

$441

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Wed 1/22

7:05 am-9:06 pm

1 stop12h 01m

Montreal Pierre Elliott Trudeau Intl

Mon 1/27

6:00 am-8:45 pm

1 stop16h 45m

$460

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Tue 2/25

7:00 am-3:20 pm

1 stop6h 20m

Montreal Pierre Elliott Trudeau Intl

Wed 2/26

2:20 pm-8:33 pm

1 stop8h 13m

$480

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Sat 6/7

12:15 pm-12:24 am

1 stop10h 09m

Toronto Pearson Intl

Sat 6/14

5:00 pm-11:27 am

1 stop20h 27m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 41 results
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Best time to book a flight from Denver to Ontario

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

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

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

Currently, January is the cheapest month in which you can book a flight from Denver to Region of Ontario (average of $243). Flying from Denver to Region of Ontario in July is currently the most expensive (average of $359). 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 DEN to ON?

Find hourly flight availability from Denver to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Region of Ontario as you normally would.

Weekly flight availability from Denver to Region of Ontario

Explore weekly flight availability from Denver to Ontario. 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 22, 2024.

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

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Region of Ontario, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated December 22, 2024.
To help decide which airline to fly from Denver to Ontario, see what other customers have to say about Delta, Alaska Airlines and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,537 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

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
9,537 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

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
8,594 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

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.

Aeromexico
7.5
Good
1,917 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

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
9,028 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

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
9,537 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.2

Boarding

8.2

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 Denver to Ontario. 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 Denver to Ontario?

    If you book a flight to Ontario from Denver, you will be flying from Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver.

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

    $165 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Delta and Sun Country Air, with prices starting from $175 and $188, respectively.

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

    The most popular route from Denver to Region of Ontario is Denver Intl - Montreal Pierre Elliott Trudeau Intl. You may also consider Denver Intl - Toronto Pearson Intl or Denver Intl - Toronto Island.

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

    The top 3 most reliable airlines when flying from Denver to Region of Ontario are Air Canada (84%), United Airlines (84%) and Austrian Airlines (72%).

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

    Looking for the cheapest flight from Denver to Region of Ontario? While on average our users pay $1,137, our data indicates the cheapest price to be $255. The most popular route (Denver Intl - Montreal Pierre Elliott Trudeau Intl), is priced around $291.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Region of Ontario (average of $243). Flying from Denver to Region of Ontario in July is currently the most expensive (average of $359). 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 Denver to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Vancouver Intl flights
Denver to Calgary flights
Denver to Pierre Elliott Trudeau Intl flights
Denver to Pearson Intl flights
Denver to Abbotsford flights
Denver to Kelowna flights
Denver to Victoria flights
Denver to Winnipeg flights
Denver to Edmonton flights
Grand Junction to Vancouver Intl flights
Denver to Québec City flights
Denver to Yellowknife flights
Denver to Toronto Island flights
Denver to Halifax flights
Vail to Pearson Intl flights
Denver to Ottawa flights
Colorado Springs to Pearson Intl flights
Denver to Saskatoon flights
Colorado Springs to Vancouver Intl flights
Vail to Vancouver Intl flights
Denver to Regina flights
Durango to Calgary flights
Montrose to Calgary flights
Denver to Region of Waterloo Intl flights
Denver to Sydney flights
Colorado Springs to Pierre Elliott Trudeau Intl flights
Denver to Whitehorse flights
Colorado Springs to Victoria flights
Grand Junction to Calgary flights
Hayden to Calgary flights
Denver to Hamilton flights
Grand Junction to Thunder Bay flights
Colorado Springs to Calgary flights
Colorado Springs to Edmonton flights
Durango to Pearson Intl flights
Grand Junction to Edmonton flights
Montrose to Vancouver Intl flights
Colorado Springs to Ottawa flights
Colorado Springs to Québec City flights
Colorado Springs to Winnipeg flights
Denver to Moncton flights
Denver to London flights
Denver to St. John's flights
Denver to Charlottetown flights
Denver to Smithers flights
Aspen to Vancouver Intl flights
Denver to Terrace flights
Aspen to Ottawa flights

Top 2 airlines flying from Denver to Ontario

Discover the top 2 airlines that operate flights from Denver to Ontario. 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 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$199Average$527FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$232Average$552FlexibilityNo cancel feeOn-time69%
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