C$ 197 Find Cheap Flights from Ontario to Colorado

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Good to know

Low seasonJanuary
High seasonAugust
Cheapest flightC$ 197
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly and prices are also 4% lower on average.
Flight from Toronto Region of Waterloo Intl to Denver

Flights from Ontario to Colorado: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Ontario to Colorado 
Verified travelerFlew with Air CanadaYYZ-DENJul 2024
I only wished they had tv monitors. The flight and the crew were excellent!
F.Flew with United AirlinesYYZ-DENAug 2024
Make sure to check the airline delay flights rate and if you have important commitments choose another airline.
JoshuaFlew with Air CanadaYYZ-DENApr 2024
Toronto's customs was one of the faster experiences I've had. They opened four more lanes to expedite the process when the lane got too long, to ensure we would all get through within around 15 minutes. The public transportation within the city is also top notch, in my opinion.

FAQs for booking flights from Ontario to Colorado

  • How does KAYAK find such low prices on flights from Ontario to Colorado?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Colorado.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Colorado?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Colorado is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to Colorado with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Colorado?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Colorado?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Colorado is Denver Intl Airport (DEN), with an average flight price of C$ 350.

  • What is the cheapest day to fly to Colorado?

    Based on KAYAK data, the cheapest day to fly to Colorado is Wednesday when round-trip tickets can be as cheap as C$ 733. On the other hand, the most expensive day to fly is Monday, when round-trip prices are C$ 958 on average.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally in the afternoon, when round-trip flights cost C$ 425 on average. Morning departures are around 1% cheaper than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the evening, which is peak travel time and where the average cost of a ticket is C$ 584.

  • What is the cheapest flight to Colorado?

    The cheapest ticket to Colorado from Ontario found in the last 72 hours was to Denver, at C$ 202 round-trip. The most popular route is Toronto Pearson Intl Airport (YYZ) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 202.

  • What is the cheapest month to fly from Ontario to Colorado?

    The cheapest month for flights from Ontario to Colorado is September, when tickets cost C$ 599 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is C$ 753 and C$ 714 respectively.

  • How far in advance should I book a flight from Ontario to Colorado?

    To get a below-average price on the flight from Ontario to Colorado, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to Colorado?

    An average direct flight from Ontario to Colorado takes 11h 00m, covering a distance of 3730 km. The shortest route is Toronto Pearson Intl Airport (YYZ) to Denver (DEN) with an average flight time of 3h 34m.

  • What are the most popular destinations in Colorado?

    Based on KAYAK flight searches, the most popular destination is Denver (95% of total searches to Colorado). The next most popular destinations are Colorado Springs (3%) and Vail (1%). Searches for flights to Gunnison (0%), to Montrose (0%), and to Durango (0%) are also popular.

Top 3 airlines serving from Ontario to Colorado

Need help choosing which airline to fly with from Ontario to Colorado? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8696 reviews
7.3Comfort
6.6Food
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

The gate attendant let me walk right by her with a bag too big for the overhead compartment

10.0 ExcellentMarni, Apr 2025DEN - DRO
Read more United Airlines reviews

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

headphone jack didnt work for the first flight and not much variety

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Not as good as expected Air Can needs to improve totally rated on internet as worst

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

Internet on both flights was sketchy. Thus in flight entertainment was non- existent on MN - Balrimote leg.

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

It took 30 minutes to check in with the Westjet rep. They didn’t have enough seats and she needed to make a call… I am always “randomly” selected to be checked at security. Their “randomly “ selection system may need some updating. They treat people like criminals. It is not appropriate behavior.

Found the seats very crowded—too close together ! And waited a long time for our luggage All staff at both ends were excellent!!!

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

Will never book through you again. Very disappointed in the notices and action taken or provided when planes are rescheduled, enough to cause missed connections

Lost my luggage. Filed a report and there is no response. Received a phone call from another airline that said they had the bag and they did not know what to do with it

Very good over all , would have been nice to have entertainment on the flight

Absolutely the worst airline I have ever taken. They lost my baggage and told me my bag tags had been cancelled. When my bags arrived days later I had to pick them up at 3:15 am. My return flight was delayed another 6 hours and they broke my bag. Westjet does nothing to try and make it a better customer experience and all the customers services representatives I spoke with were useless and incompetent. Never flying westjet again.

Easy self checkin and baggage drop. No in seat entertainment, but wifi and app worked well

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

All was fine. Weather was a bit stormy, but nothing kayak can do about that! 😊

I paid for a comfort class seat and was seated in economy.

My plane was cancelled and had to be rebook for the evening was not happy.

The flight was cancelled and we had to rebook on Porter to make our cruise the next day. Air Canada has not compensated. We won’t be flying with them again. This is the second time this has happened. Also the return flight was delayed 2 hours who knows why.

Separated me and my wife and wife’s sister in far apart different seats even though I booked them all together. Just scams after scams to make us pay more. Worst airline

The only issues I have are the seats are very small and so is the overhead storage. You should mention that while booking flights. I had plenty of knee room but I am wider than my seat, and I am not fat at all. The Mitsubishi 900 models need to be upgraded to western size people. I do not know how a 300 pound woman fit into those seats. I had to continuously lean away from the aisle to keep people and flight crew from bumping into my shoulder. 3 hour flight so no entertainment or food, just snacks and a drink, which was no big deal. The buttery/garlic pretzels were pretty tasty.

Book cheap flights from Ontario to Colorado

Recent round-trip flight deals

22/5Thu
1 stopWestJet
22h 27mYYZ-DEN
28/5Wed
2 stopsWestJet
10h 20mDEN-YYZ
C$ 311
22/5Thu
1 stopWestJet
15h 02mYYZ-DEN
28/5Wed
1 stopWestJet
8h 41mDEN-YYZ
C$ 318
8/6Sun
1 stop
9h 52mYYZ-DEN
11/6Wed
1 stop
17h 01mDEN-YYZ
C$ 415
13/6Fri
1 stop
8h 28mYTZ-DEN
20/6Fri
1 stop
10h 17mDEN-YTZ
C$ 432
29/5Thu
1 stopUnited Airlines
6h 24mYYZ-COS
5/6Thu
1 stopUnited Airlines
13h 18mCOS-YYZ
C$ 454
12/6Thu
1 stopDelta
9h 29mYYZ-COS
19/6Thu
2 stopsDelta
11h 01mCOS-YYZ
C$ 455
12/6Thu
1 stopDelta
9h 29mYYZ-COS
19/6Thu
1 stopDelta
7h 30mCOS-YYZ
C$ 469
1/6Sun
1 stopUnited Airlines
15h 46mYUL-COS
14/6Sat
1 stopUnited Airlines
13h 56mCOS-YUL
C$ 484
6/8Wed
2 stopsAir Canada
10h 38mYUL-COS
10/8Sun
2 stopsAir Canada
9h 26mCOS-YUL
C$ 550
15/7Tue
directAir Canada
4h 16mYUL-DEN
21/7Mon
directAir Canada
3h 46mDEN-YUL
C$ 610

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Recent one-way flight deals

23/5Fri
1 stopWestJet
14h 52mYKF-DEN
C$ 197
15/6Sun
1 stopWestJet
14h 22mYYZ-DEN
C$ 202
20/5Tue
1 stopWestJet
15h 02mYYZ-DEN
C$ 215
15/6Sun
1 stop
24h 18mYTZ-DEN
C$ 227
13/6Fri
1 stop
8h 28mYTZ-DEN
C$ 228
13/5Tue
1 stopUnited Airlines
7h 58mYYZ-COS
C$ 266
28/9Sun
1 stopSun Country Air
7h 49mYUL-DEN
C$ 273
6/7Sun
1 stopUnited Airlines
15h 50mYUL-COS
C$ 331
29/7Tue
directAir Canada
4h 16mYUL-DEN
C$ 345
30/6Mon
directAir Canada
4h 16mYUL-DEN
C$ 347

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Last minute flights from Ontario to Colorado

Last minute flight, train and bus deals

4/5Sun
multi-stop
10h 14mYYZ-DEN
13/5Tue
multi-stop
8h 41mDEN-YYZ
C$ 703
4/5Sun
multi-stop
10h 14mYYZ-DEN
14/5Wed
multi-stop
10h 11mDEN-YYZ
C$ 713
4/5Sun
multi-stopUnited Airlines
7h 39mYYZ-COS
11/5Sun
multi-stopUnited Airlines
12h 06mCOS-YYZ
C$ 723
2/5Fri
multi-stopUnited Airlines
7h 15mYYZ-COS
5/5Mon
multi-stopUnited Airlines
11h 01mCOS-YYZ
C$ 781
5/5Mon
multi-stopWestJet
19h 18mYYZ-DEN
13/5Tue
multi-stopWestJet
8h 41mDEN-YYZ
C$ 786
3/5Sat
multi-stopWestJet
9h 35mYYZ-DEN
14/5Wed
multi-stopWestJet
10h 11mDEN-YYZ
C$ 904
5/5Mon
multi-stopAlaska Airlines
30h 30mYYZ-DEN
8/5Thu
multi-stopAlaska Airlines
28h 40mDEN-YYZ
C$ 1,046
2/5Fri
multi-stopAlaska Airlines
20h 36mYYZ-DEN
6/5Tue
multi-stopAlaska Airlines
28h 40mDEN-YYZ
C$ 1,116
4/5Sun
directAir Canada
4h 15mYUL-DEN
11/5Sun
directAir Canada
3h 46mDEN-YUL
C$ 1,603
1/5Thu
directAir Canada
4h 22mYUL-DEN
2/5Fri
directAir Canada
3h 46mDEN-YUL
C$ 1,802

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Everything you need to know for your flight to Colorado

Cabin class types available on flights to Ontario

Cabin classes available on flights to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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