$178 Find Cheap Flights from Ottawa to Colorado

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to Colorado departing on 1/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Colorado

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Colorado, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Colorado, as well as popular online travel agencies
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Flight Deals

Book Cheap Ottawa to Colorado Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to Colorado that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ottawa to Colorado

Sat, Jan 17 - Sat, Jan 24
United Airlines Logo
7:27 pm - 8:52 am
YOW
-
COS
15h 25m2 stops
United Airlines Logo
7:00 am - 9:18 pm
COS
-
YOW
12h 18m2 stops
$301United Airlines
Sat, Jan 10 - Sat, Jan 17
Multiple Airlines Logo
8:40 am - 8:25 pm
YOW
-
DEN
13h 45m2 stops
Multiple Airlines Logo
6:59 pm - 11:58 pm
DEN
-
YOW
26h 59m1 stop
$304Multiple Airlines
Tue, Feb 3 - Sat, Feb 7
Multiple Airlines Logo
4:15 pm - 12:19 pm
YOW
-
DEN
22h 04m2 stops
Multiple Airlines Logo
7:00 am - 5:15 pm
DEN
-
YOW
8h 15m1 stop
$307Multiple Airlines
Fri, Jan 30 - Wed, Feb 4
Multiple Airlines Logo
7:15 pm - 12:19 pm
YOW
-
DEN
19h 04m2 stops
Multiple Airlines Logo
1:20 pm - 5:15 pm
DEN
-
YOW
25h 55m1 stop
$310Multiple Airlines
Sun, Feb 1 - Sat, Feb 7
Multiple Airlines Logo
4:15 pm - 9:38 am
YOW
-
DEN
43h 23m2 stops
Multiple Airlines Logo
7:00 am - 5:15 pm
DEN
-
YOW
8h 15m1 stop
$316Multiple Airlines
Fri, Jan 30 - Sat, Feb 7
Multiple Airlines Logo
7:15 pm - 12:19 pm
YOW
-
DEN
19h 04m2 stops
Multiple Airlines Logo
7:00 am - 5:15 pm
DEN
-
YOW
8h 15m1 stop
$320Multiple Airlines
Fri, Jan 30 - Sat, Feb 7
Multiple Airlines Logo
4:20 pm - 10:00 am
YOW
-
DEN
19h 40m1 stop
Multiple Airlines Logo
7:00 am - 5:15 pm
DEN
-
YOW
8h 15m1 stop
$326Multiple Airlines
Sun, Apr 5 - Sat, Apr 11
Air Canada Logo
6:00 am - 2:20 pm
YOW
-
COS
10h 20m2 stops
Air Canada Logo
7:00 am - 6:34 pm
COS
-
YOW
9h 34m2 stops
$367Air Canada
Sat, Jan 17 - Sat, Jan 24
American Airlines Logo
8:30 am - 9:51 am
YOW
-
COS
27h 21m3 stops
American Airlines Logo
3:05 pm - 4:53 pm
COS
-
YOW
23h 48m2 stops
$708American Airlines
Sat, Jan 17 - Sat, Jan 24
American Airlines Logo
8:30 am - 9:51 am
YOW
-
COS
27h 21m3 stops
American Airlines Logo
3:05 pm - 4:53 pm
COS
-
YOW
23h 48m3 stops
$806American Airlines
Booking Insights

KAYAK's insights & trends for Ottawa to Colorado flights

Get data-powered insights and trends into flights from Ottawa to Colorado to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Ottawa to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ottawa to Colorado is September, when tickets cost $325 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $663 and $597 respectively.

What’s the cheapest day of the week to fly from Ottawa to Colorado?

The average price of all round-trip flights from Ottawa to Colorado clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ottawa to Colorado, look for departures on Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Colorado, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ottawa to Colorado, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ottawa to Colorado, you should book around 4 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$178
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 23% increase in price.
Flight from Ottawa to Colorado Springs

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Ottawa 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 Ottawa to Colorado.

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

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

  • What is the Hacker Fare option on flights from Ottawa 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 Ottawa 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 Ottawa 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 Ottawa to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Colorado is generally in the morning, when round-trip flights cost $466 on average. Morning departures are around 38% 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 $748.

Reviews of the top airlines flying from Ottawa to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ottawa 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 9065 reviews
7.7Boarding
7.3Comfort
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

8.0 ExcellentTommy, Nov 2025
YYZ - EWR
Read more United Airlines reviews

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

I dread trans-Pacific flights. They are very long. This was my first time on Universal, and it was my best crossing ever. The staff were professional, the hospitality was great, and the food was delicious. The entertainment system filled the long flight hours. I will seek out Universal flights from now onwards. 🙂

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Terrible. They wouldn't allow me on my flight on the 14th..

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Wifi was great. Kind air crew and comfortable seating. Also liked the entertainment options.

Flying with Air Canada is still better than the discount airlines like Flair. The seats are more comfortable and the on-board entertainment is better, with each seat having a built in screen and lots of content to watch. Onboard WIFI is also great to have, as well as plugs for charging. I think passengers in general are getting better at not bringing too much luggage onboard, and Air Canada is better at managing this without customers feeling like they are being taken advantage of with extra fees. I have travelled on different airlines and all seem to be loading faster, with fewer people bringing both a carry on and a personal item. Now I just bring one item and it fits under the seat so I don't need to worry about finding a place in the overhead bins. Overall, across the industry, asking customers to pay for carry on baggage is fair because it allows customers to only pay for what they need, and it helps to keep the planes on time. Kudos to Air Canada for its approach - the desired result is achieved without customers feeling that they are being surprised and caught with unexpected extra fees.

Due to the strike by AC flight attendants, my flight was cancelled. Very disappointing! A refund is being processed. This was not a Kayak issue. I will be sure to come back to Kayak in the future.

I did not noticed baggage was separate - I had assumed international flights included luggage, so it surprised me I had to pay to check a bag.

Staff was very courteous and kept things organized. We will definitely use Air Canada for further travel

In a nutshell, my bag, the one I have to pay for, because now you can’t even bring a carry on, did not make it. I am still waiting for an update. The fact that not only were have to pay for it, but on top of that we are stuck without getting it, it’s ridiculous..

Great flights. 90 minute departure delay for maintenance issues, not a great start but, afer that very good. Didn't pay extra for seats and lucked into a window and an aisle seat. Price was excellent at the super low economy level.

Just a little improvement on food but everything is excellent

flight landed late almost 1.00hr and we 4 passengers missed our connected flight to indianapolis, we need to get the hotel and taxi for the next day flight to home in indianapolis, cost us $ 300 more

They lost my checked in luggage, why do I pay for my cargo not arriving at the same destination as me?

Everything you need to know for your flight from Ottawa to Colorado

Information on your arrival and departure airports