What is the cheapest airline that flies from Ottawa to Denver Intl?

Air Canada and WestJet are the most popular carriers operating from Ottawa to Denver Intl

What airlines fly to Denver?

Air Canada, United Airlines and WestJet are the top three most popular airlines that fly to Denver from Ottawa according to our data. Air Canada is the first choice among our users, with 75% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 3 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ottawa Airport to Denver Intl Airport?

Prices for flights from Ottawa Airport to Denver Intl Airport were last updated today.

How many operators does momondo search for flights from Ottawa Airport to Denver Intl Airport?

There are 3 operators available for flights from Ottawa Airport to Denver Intl Airport as of July 2025.

How old do you have to be to fly from Ottawa Airport to Denver Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The travel and health documents required for your trip to Denver Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Denver Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$183 Cheap Flights from Ottawa to Denver in 2025

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Find the cheapest flights from Ottawa to Denver

Round-trip

One-way

Last minute

Cheap round-trip flights

5:55 am - 6:48 pmYOW-DEN

14h 53m2 stops

12:15 pm - 12:40 amDEN-YOW

10h 25m1 stop

$292WestJet

Find Deal

Sun, Sep 7 - Thu, Sep 18

3:45 pm - 11:24 amYOW-DEN

21h 39m1 stop

12:15 pm - 12:40 amDEN-YOW

10h 25m1 stop

$293WestJet

Find Deal

Sat, Sep 6 - Thu, Sep 18

12:20 pm - 11:24 amYOW-DEN

25h 04m2 stops

12:15 pm - 12:40 amDEN-YOW

10h 25m1 stop

$297WestJet

Find Deal

Sat, Sep 6 - Tue, Sep 16

12:20 pm - 11:24 amYOW-DEN

25h 04m2 stops

12:15 pm - 12:40 amDEN-YOW

10h 25m1 stop

$298WestJet

Find Deal

Sat, Sep 6 - Thu, Sep 18

9:25 am - 7:30 pmYOW-DEN

12h 05m1 stop

7:05 pm - 8:19 amDEN-YOW

11h 14m1 stop

$310Air Canada

Find Deal

Mon, Aug 18 - Mon, Aug 25

9:25 am - 7:30 pmYOW-DEN

12h 05m1 stop

7:45 am - 5:05 pmDEN-YOW

7h 20m1 stop

$314Air Canada

Find Deal

Wed, Aug 20 - Tue, Aug 26

6:33 am - 8:12 pmYOW-DEN

15h 39m1 stop

7:48 am - 9:35 pmDEN-YOW

11h 47m1 stop

$334United Airlines

Find Deal

Mon, Aug 25 - Sun, Aug 31

3:35 pm - 10:21 amYOW-DEN

20h 46m2 stops

4:14 pm - 2:56 pmDEN-YOW

20h 42m1 stop

$348

Find Deal

Mon, Aug 25 - Wed, Sep 17

4:25 pm - 8:02 amYOW-DEN

17h 37m1 stop

12:04 am - 4:57 pmDEN-YOW

14h 53m1 stop

$363

Find Deal

Thu, Aug 14 - Mon, Sep 8

5:25 pm - 9:59 pmYOW-DEN

6h 34m1 stop

11:59 pm - 9:58 amDEN-YOW

7h 59m1 stop

$387United Airlines

Find Deal

Tue, Sep 9 - Wed, Sep 17

Air Canada flights from Ottawa to Denver

Our best Air Canada deals on Ottawa to Denver flight tickets

Air Canada

Aug 18

YOW9:25 amOttawa

12h 05m

1 stop

DEN7:30 pmDenver Intl

Aug 25

DEN7:05 pmDenver Intl

11h 14m

1 stop

YOW8:19 amOttawa

$310

Find similar

Air Canada

Aug 20

YOW9:25 amOttawa

12h 05m

1 stop

DEN7:30 pmDenver Intl

Aug 26

DEN7:45 amDenver Intl

7h 20m

1 stop

YOW5:05 pmOttawa

$314

Find similar

Air Canada

Sep 5

YOW9:35 amOttawa

11h 48m

1 stop

DEN7:23 pmDenver Intl

Sep 8

DEN7:05 pmDenver Intl

11h 18m

1 stop

YOW8:23 amOttawa

$317

Find similar

WestJet flights from Ottawa to Denver

Our best WestJet deals on Ottawa to Denver flight tickets

WestJet

Sep 7

YOW5:55 amOttawa

14h 53m

2 stops

DEN6:48 pmDenver Intl

Sep 18

DEN12:15 pmDenver Intl

10h 25m

1 stop

YOW12:40 amOttawa

$292

Find similar

WestJet

Sep 6

YOW3:45 pmOttawa

21h 39m

1 stop

DEN11:24 amDenver Intl

Sep 18

DEN12:15 pmDenver Intl

10h 25m

1 stop

YOW12:40 amOttawa

$293

Find similar

WestJet

Sep 6

YOW12:20 pmOttawa

25h 04m

2 stops

DEN11:24 amDenver Intl

Sep 16

DEN12:15 pmDenver Intl

10h 25m

1 stop

YOW12:40 amOttawa

$297

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Sun 9/7

5:55 am-6:48 pm

2 stops14h 53m

Denver Intl

Thu 9/18

12:15 pm-12:40 am

1 stop10h 25m

$292

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Sat 9/6

3:45 pm-11:24 am

1 stop21h 39m

Denver Intl

Thu 9/18

12:15 pm-12:40 am

1 stop10h 25m

$293

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Sat 9/6

12:20 pm-11:24 am

2 stops25h 04m

Denver Intl

Tue 9/16

12:15 pm-12:40 am

1 stop10h 25m

$297

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Sat 9/6

12:20 pm-11:24 am

2 stops25h 04m

Denver Intl

Thu 9/18

12:15 pm-12:40 am

1 stop10h 25m

$298

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Mon 8/18

9:25 am-7:30 pm

1 stop12h 05m

Denver Intl

Mon 8/25

7:05 pm-8:19 am

1 stop11h 14m

$310

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Wed 8/20

9:25 am-7:30 pm

1 stop12h 05m

Denver Intl

Tue 8/26

7:45 am-5:05 pm

1 stop7h 20m

$314

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Mon 8/25

6:33 am-8:12 pm

1 stop15h 39m

Denver Intl

Sun 8/31

7:48 am-9:35 pm

1 stop11h 47m

$334

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Mon 8/25

3:35 pm-10:21 am

2 stops20h 46m

Denver Intl

Wed 9/17

4:14 pm-2:56 pm

1 stop20h 42m

$348

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Thu 8/14

4:25 pm-8:02 am

1 stop17h 37m

Denver Intl

Mon 9/8

12:04 am-4:57 pm

1 stop14h 53m

$363

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 9/9

5:25 pm-9:59 pm

1 stop6h 34m

Denver Intl

Wed 9/17

11:59 pm-9:58 am

1 stop7h 59m

$387

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ottawa to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Ottawa is in November. Flight prices, which tend to average around $324, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in November, then you should wait until September to fly from Ottawa, when ticket prices are also cheap, with an average price of $325.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $285. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Friday, with ticket prices averaging around $806.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the morning when flights can be purchased for as low as $466. Flights in the afternoon are often more expensive with an average ticket price of $748.

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $465 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Ottawa for as low as $280 on momondo.

How have Ottawa to Denver flight prices changed over time?

As of July 2025, prices for Ottawa to Denver flights are approximately 10% cheaper when compared to flights at the same time last year.

When to book flights from Ottawa to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to Denver according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ottawa to Denver (YOW to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to Denver

Best Price Found	$183
Fastest flight time	6h 02m
Direct flights	None
Airports in Denver	1 airport

The best one-way flight to Denver from Ottawa in the past 72 hours is $183. The best round-trip flight deal from Ottawa to Denver found on momondo in the last 72 hours is $292.

The fastest flight from Ottawa to Denver takes 6h 02m

There are no direct flights from Ottawa to Denver. Popular non-direct route for this connection is Ottawa Airport - Denver Intl Airport.

There is 1 airport near Denver: Denver Intl (DEN)

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How far is Ottawa to Denver Intl by plane?
The straight-line distance from Ottawa to Denver Intl is 1530.4 mi. Typically, this will take 6h 02m by plane in normal conditions.
When did momondo last update prices for flights from Ottawa Airport to Denver Intl Airport?
Prices for flights from Ottawa Airport to Denver Intl Airport were last updated today.
How many operators does momondo search for flights from Ottawa Airport to Denver Intl Airport?
There are 3 operators available for flights from Ottawa Airport to Denver Intl Airport as of July 2025.
How old do you have to be to fly from Ottawa Airport to Denver Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The travel and health documents required for your trip to Denver Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Denver Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Ottawa to Denver?
momondo data reveals that the most frequently booked airline on the route from Ottawa to Denver is Air Canada, representing 72% of all bookings. The subsequent popular airlines are United Airlines at 16% and WestJet at 12%.

Best airlines flying from Ottawa to Denver

Compare and see reviews for airlines that fly from Ottawa to Denver with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom $229	Free Cancellation	Rating 7.2 2,978 reviews	Search WestJet flights
United Airlines	PriceFrom $234	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Air Canada	PriceFrom $254	Free Cancellation	Rating 7.1 9,851 reviews	Search Air Canada flights

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Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to Denver?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ottawa to Denver. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ottawa to Denver with flexible booking policies on momondo?

Yes. All flights to Denver from Ottawa on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ottawa to Denver?

momondo helps you find the best flight between Ottawa and Denver by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ottawa to Denver right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Denver from Ottawa. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.