How long is the flight from Colorado to Region of Ontario?

Airlines like American Airlines, United Airlines, and Delta fly from Colorado to Region of Ontario in about 7h 32m. The time it takes to get you to your destination can typically vary by up to 11h 45m. Airlines will cover a distance of 2155 km. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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

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

How can I find direct flights from Colorado to Ontario?

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

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

Yes. Cheapflights offers flight deals from Colorado 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.

C$ 190+ Cheap Flights from Colorado to Ontario

Cheap flight deals from Colorado to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Colorado to Ontario
Explore the most affordable flight options available from Colorado to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Thu 3/1211:59 p.m. -

1 stop11h 41m

Mon 7/129:35 a.m. -

2 stops38h 20m

Deal found 28/10C$ 425

Fri 4/1211:59 p.m. -

1 stop11h 41m

Mon 7/126:30 a.m. -

1 stop17h 00m

Deal found 28/10C$ 438

Thu 10/1211:59 p.m. -

1 stop11h 41m

Mon 14/121:40 p.m. -

1 stop8h 20m

Deal found 28/10C$ 443

Thu 19/116:30 a.m. -

2 stops33h 40m

Mon 23/111:40 p.m. -

1 stop9h 51m

Deal found 26/10C$ 455

Thu 19/116:30 a.m. -

2 stops33h 40m

Tue 24/111:40 p.m. -

1 stop9h 51m

Deal found 27/10C$ 469

Wed 25/116:00 a.m. -

2 stops40h 55m

Tue 1/121:40 p.m. -

1 stop8h 45m

Deal found 26/10C$ 473

Mon 14/1211:16 a.m. -

2 stops50h 04m

Mon 11/13:55 p.m. -

1 stop18h 33m

Deal found 29/10C$ 490

Thu 3/128:46 p.m. -

2 stops24h 59m

Tue 8/124:40 p.m. -

1 stop17h 33m

Deal found 28/10C$ 599

Thu 26/116:45 a.m. -

2 stops14h 55m

Thu 3/124:40 p.m. -

1 stop17h 29m

Deal found 29/10C$ 603

Wed 2/127:25 a.m. -

2 stops14h 15m

Tue 8/124:40 p.m. -

1 stop17h 33m

Deal found 28/10C$ 608

Fri 4/127:10 a.m. -

2 stops14h 35m

Tue 8/124:40 p.m. -

1 stop17h 33m

Deal found 28/10C$ 613

Tue 1/1210:18 a.m. -

2 stops35h 02m

Tue 8/124:40 p.m. -

1 stop17h 33m

Deal found 28/10C$ 620

Best flights from Colorado to Ontario
Discover carefully curated flight deals from Colorado to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Thu 26/116:45 a.m. -

2 stops14h 55m

Thu 3/124:40 p.m. -

1 stop17h 29m

Deal found 29/10C$ 603

Sat 5/121:39 p.m. -

1 stop19h 17m

Tue 8/126:23 p.m. -

1 stop20h 46m

Deal found 26/10C$ 734

Sun 29/115:30 a.m. -

1 stop7h 32m

Wed 2/126:45 a.m. -

1 stop6h 17m

Deal found 27/10C$ 845

Tue 8/127:40 a.m. -

2 stops30h 25m

Sat 12/125:15 p.m. -

2 stops23h 09m

Deal found 30/10C$ 979

Tue 2/22:11 p.m. -

1 stop7h 45m

Tue 16/26:15 a.m. -

1 stop10h 19m

Deal found 25/10C$ 1,022

Mon 15/211:25 a.m. -

1 stop6h 27m

Sun 28/27:45 a.m. -

1 stop12h 28m

Deal found 26/10C$ 1,255

Thu 12/111:34 p.m. -

1 stop8h 12m

Sat 14/115:12 p.m. -

1 stop7h 34m

Deal found 29/10C$ 831

Tue 12/112:10 p.m. -

1 stop8h 27m

Wed 13/13:45 p.m. -

1 stop8h 06m

Deal found 27/10C$ 845

Sat 21/117:12 p.m. -

1 stop12h 35m

Mon 23/118:40 a.m. -

Nonstop3h 55m

Deal found 27/10C$ 859

Sun 29/117:00 a.m. -

1 stop6h 02m

Fri 4/124:10 p.m. -

1 stop6h 52m

Deal found 27/10C$ 845

Sat 12/128:16 p.m. -

2 stops16h 16m

Thu 17/125:40 p.m. -

2 stops20h 38m

Deal found 26/10C$ 864

Tue 10/111:10 p.m. -

1 stop7h 45m

Sat 14/116:10 a.m. -

1 stop8h 29m

Deal found 25/10C$ 890

Tue 10/117:05 a.m. -

1 stop5h 57m

Sat 14/114:10 p.m. -

1 stop6h 20m

Deal found 27/10C$ 845

Tue 8/129:50 a.m. -

Nonstop3h 12m

Sun 13/121:00 p.m. -

1 stop9h 27m

Deal found 29/10C$ 924

Wed 25/119:50 a.m. -

Nonstop3h 12m

Tue 1/124:10 p.m. -

Nonstop3h 54m

Deal found 26/10C$ 869

Wed 2/126:10 a.m. -

2 stops15h 30m

Fri 4/125:30 a.m. -

2 stops13h 44m

Deal found 28/10C$ 1,168

Sat 10/45:30 p.m. -

Nonstop3h 14m

Sat 17/42:00 p.m. -

1 stop8h 14m

Deal found 28/10C$ 944

Sun 29/117:00 a.m. -

2 stops12h 15m

Fri 4/128:35 a.m. -

2 stops10h 25m

Deal found 27/10C$ 1,267

Thu 3/129:50 a.m. -

Nonstop3h 12m

Mon 7/124:10 p.m. -

Nonstop3h 54m

Deal found 28/10C$ 870

Tue 1/1210:35 a.m. -

2 stops11h 05m

Sun 6/125:30 a.m. -

2 stops13h 44m

Deal found 28/10C$ 1,168

Fri 12/29:47 a.m. -

Nonstop3h 15m

Mon 15/22:00 p.m. -

1 stop8h 27m

Deal found 25/10C$ 957

Tue 24/119:50 a.m. -

Nonstop3h 12m

Tue 1/124:10 p.m. -

Nonstop3h 54m

Deal found 27/10C$ 870

Thu 3/126:10 a.m. -

2 stops15h 30m

Sun 6/125:30 a.m. -

2 stops13h 44m

Deal found 28/10C$ 1,168

Thu 3/126:10 a.m. -

2 stops15h 30m

Sat 5/125:30 a.m. -

2 stops13h 44m

Deal found 28/10C$ 1,168

Tue 1/1210:35 a.m. -

2 stops11h 05m

Fri 4/125:30 a.m. -

2 stops13h 44m

Deal found 28/10C$ 1,168

Thu 19/117:45 a.m. -

1 stop7h 02m

Tue 24/114:10 p.m. -

Nonstop3h 54m

Deal found 27/10C$ 966

Sat 19/1210:29 p.m. -

2 stops36h 41m

Mon 28/129:15 a.m. -

1 stop15h 32m

Deal found 27/10C$ 1,099

Wed 2/1210:35 a.m. -

2 stops11h 05m

Tue 8/125:30 a.m. -

2 stops13h 44m

Deal found 28/10C$ 1,168

Mon 21/129:44 a.m. -

Nonstop3h 18m

Sun 3/17:26 p.m. -

1 stop6h 27m

Deal found 28/10C$ 966

Tue 8/123:28 p.m. -

2 stops20h 35m

Wed 9/124:10 p.m. -

1 stop6h 31m

Deal found 27/10C$ 1,001

Find flight deals from Colorado to Ontario

Round-trip from	C$ 425
One-way from	C$ 190
Popular in	August
Cheapest in	February
Average price	C$ 838
Good one-way deal	C$ 396 or less

3/12-7/12
3 total stops
50h 01m total
Colorado to Ontario

Search Deals

26/11-31/12
1 total stop
29h 15m total
Colorado to Ontario

Search Deals

Highest demand for flights based on searches. 3% potential increase in price (C$ 46 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease (C$ 10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a one-way flight from Colorado to Ontario.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Mon 21/12

8:35 a.m.-11:55 p.m.

2 stops13h 20m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 231

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Mon 16/11

4:14 p.m.-9:52 p.m.

1 stop27h 38m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 278

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Sat 12/12

10:29 p.m.-11:40 p.m.

3 stops23h 11m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 290

Colorado SpringsToronto

COS Colorado Springs - YYZ Toronto Pearson Intl

COSYYZ

Colorado Springs

Thu 12/11

12:54 p.m.-11:47 p.m.

2 stops8h 53m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 376

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Sun 27/12

6:35 a.m.-3:14 p.m.

1 stop6h 39m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 387

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Thu 10/12

9:50 a.m.-3:02 p.m.

Nonstop3h 12m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 399

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Sat 26/12

9:44 a.m.-3:02 p.m.

Nonstop3h 18m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 399

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Sun 15/11

11:25 a.m.-9:35 p.m.

1 stop8h 10m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 403

Quickest round-trip

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Mon 16/11

5:40 p.m.-10:51 p.m.

Nonstop3h 11m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 404

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Mon 21/12

9:44 a.m.-3:02 p.m.

Nonstop3h 18m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 406

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 43 resultsSorted by cheapest first

...

Best time to book a flight from Colorado to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Colorado with our price prediction graph.

DEN-YYZ

COS-YYZ

DEN-YOW

EGE-YYZ

GJT-YYZ

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.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Ontario

USCO-CAON

DEN-YYZ

COS-YYZ

DEN-YOW

EGE-YYZ

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Region of Ontario (average of C$ 828). Flying from Colorado to Region of Ontario in February is currently the most expensive (average of C$ 959). 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 CO to ON?

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

How much does it cost to fly round-trip from Colorado to Region of Ontario?

Airfare is below average for this route at the moment.

Colorado to Region of Ontario flights typically cost between C$ 639 and C$ 1,018 in December.
The cheapest round-trip price found within the last 5 days was C$ 425 on Multiple Airlines (3 Dec-7 Dec).

How far ahead should I book a flight from Colorado to Region of Ontario?

To ensure you get the cheapest price possible for a flight from Colorado to Region of Ontario, you should look to book at least 20 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Air Canada from Colorado to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Canada

7.1

Good

11,833 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

Air Canada

7.1

Good

11,833 reviews

Air Canada

7.1

Good

11,833 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

Related info for your journey

How long is the flight from Colorado to Region of Ontario?
Airlines like American Airlines, United Airlines, and Delta fly from Colorado to Region of Ontario in about 7h 32m. The time it takes to get you to your destination can typically vary by up to 11h 45m. Airlines will cover a distance of 2155 km. This flight may include one or multiple stops.
Can I find deals for flights from Colorado to Ontario that include hotel bookings?
Yes. In addition to deals on Colorado to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colorado to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Ontario.
Can I find deals for business class flights from Colorado to Ontario?
Yes. Cheapflights offers flight deals from Colorado 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 Colorado to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from Colorado to Region of Ontario (average of C$ 828). Flying from Colorado to Region of Ontario in February is currently the most expensive (average of C$ 959). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to Canada

Flights by cabin class

Other flight options

Popular flights

Return Flight Options

Top destinations

Alternative routes for Colorado to Ontario

Newark to Toronto Island flights

Newark to Pearson Intl flights

LaGuardia to Pearson Intl flights

Newark to Pierre Elliott Trudeau Intl flights

LaGuardia to Pierre Elliott Trudeau Intl flights

John F Kennedy Intl to Pearson Intl flights

San Francisco to Vancouver Intl flights

John F Kennedy Intl to Vancouver Intl flights

Los Angeles to Vancouver Intl flights

Newark to Vancouver Intl flights

LaGuardia to Toronto Island flights

Seattle to Vancouver Intl flights

John F Kennedy Intl to Pierre Elliott Trudeau Intl flights

Reagan-National to Pearson Intl flights

Dulles Intl to Pearson Intl flights

Boston to Toronto Island flights

O'Hare Intl to Pearson Intl flights

Boston to Pearson Intl flights

Dulles Intl to Pierre Elliott Trudeau Intl flights

Dallas/Fort Worth to Pearson Intl flights

O'Hare Intl to Pierre Elliott Trudeau Intl flights

LaGuardia to Vancouver Intl flights

John F Kennedy Intl to Toronto Island flights

Boston to Pierre Elliott Trudeau Intl flights

Reagan-National to Pierre Elliott Trudeau Intl flights

Newark to Québec City flights

San Francisco to Pearson Intl flights

Fort Lauderdale to Pierre Elliott Trudeau Intl flights

Dulles Intl to Toronto Island flights

Newark to Calgary flights

Los Angeles to Pearson Intl flights

Los Angeles to Calgary flights

Atlanta to Pearson Intl flights

Los Angeles to Pierre Elliott Trudeau Intl flights

Newark to Hamilton flights

Dallas/Fort Worth to Vancouver Intl flights

O'Hare Intl to Toronto Island flights

Seattle to Pearson Intl flights

John F Kennedy Intl to Calgary flights

Ontario to Vancouver Intl flights

San Diego to Vancouver Intl flights

O'Hare Intl to Calgary flights

Baltimore to Pearson Intl flights

Denver to Vancouver Intl flights

O'Hare Intl to Vancouver Intl flights

Minneapolis to Pearson Intl flights

San Francisco to Calgary flights

Hobby to Vancouver Intl flights

San Francisco to Pierre Elliott Trudeau Intl flights

Hobby to Pearson Intl flights

Top airline flying from Colorado to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 362	AverageC$ 944	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

How does Cheapflights help users find flights from Colorado to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Colorado today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Colorado to Ontario?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Colorado to Ontario.

Can Cheapflights find flights from Colorado to Ontario with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Colorado to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Colorado to Ontario become cheaper?

Not ready to book yet? You can track prices for flights from Colorado to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Colorado to Ontario from C$ 190

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Colorado to Ontario

Cheapest flights from Colorado to OntarioExplore the most affordable flight options available from Colorado to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from Colorado to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Colorado to OntarioDiscover carefully curated flight deals from Colorado to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from Colorado to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Colorado to OntarioExplore direct flight options from Colorado to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Explore direct flight options from Colorado to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Colorado to OntarioDiscover last-minute flight deals from Colorado to Ontario. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Colorado to Ontario. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Colorado to OntarioSearch for one-way flight options from Colorado to Ontario. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from Colorado to Ontario. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Find flight deals from Colorado to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado to Ontario that are best for you.

Best time to book a flight from Colorado to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Colorado with our price prediction graph.

Cheapflights Insights

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

What is the cheapest time of day to fly from CO to ON?

Find hourly flight availability from Colorado 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 30 October 2026.

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

How much does it cost to fly round-trip from Colorado to Region of Ontario?

Airfare is below average for this route at the moment.

Colorado to Region of Ontario flights typically cost between C$ 639 and C$ 1,018 in December.The cheapest round-trip price found within the last 5 days was C$ 425 on Multiple Airlines (3 Dec-7 Dec).

How far ahead should I book a flight from Colorado to Region of Ontario?

To ensure you get the cheapest price possible for a flight from Colorado to Region of Ontario, you should look to book at least 20 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Air Canada from Colorado to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Colorado to Region of Ontario?

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

How can I find direct flights from Colorado to Ontario?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to Canada

Book a non-stop flight to one of these other cities located in Canada.

Search flights from Colorado to Ontario by cabin class

Find flights from Colorado to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Colorado and Ontario flights

Browse other Colorado and Ontario flight options. Last updated on 30 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Ontario

Find the right flight back to Colorado after your stay in Ontario

Colorado to Ontario flights

Consider these flights travelling from Colorado to Ontario.

Top airline flying from Colorado to Ontario

Fly with Cheapflights

How does Cheapflights help users find flights from Colorado to Ontario?

Why should you use Cheapflights to find cheap flight tickets from Colorado to Ontario?

Can Cheapflights find flights from Colorado to Ontario with no change fees?

Can Cheapflights notify me if prices for flights from Colorado to Ontario become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Colorado to Ontario
Explore the most affordable flight options available from Colorado to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Colorado to Ontario
Discover carefully curated flight deals from Colorado to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Colorado to Ontario
Explore direct flight options from Colorado to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Colorado to Ontario
Discover last-minute flight deals from Colorado to Ontario. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Colorado to Ontario
Search for one-way flight options from Colorado to Ontario. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Colorado to Region of Ontario flights typically cost between C$ 639 and C$ 1,018 in December.
The cheapest round-trip price found within the last 5 days was C$ 425 on Multiple Airlines (3 Dec-7 Dec).