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

Airlines like American Airlines, Air Canada, and Delta fly from Colorado to Region of Ontario in about 7h 59m. The time it takes to get you to your destination can typically vary by up to 11h 17m. 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$ 176+ 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 13 September 2026.

Wed 21/108:55 p.m. -

1 stop19h 05m

Sat 24/101:45 p.m. -

1 stop20h 34m

Deal found 11/9C$ 426

Mon 19/108:10 a.m. -

1 stop5h 50m

Sat 24/1010:50 a.m. -

1 stop8h 31m

Deal found 11/9C$ 433

Sat 10/108:55 p.m. -

1 stop19h 05m

Mon 19/101:45 p.m. -

1 stop20h 34m

Deal found 9/9C$ 440

Thu 15/1012:15 p.m. -

1 stop8h 30m

Mon 19/104:45 p.m. -

1 stop26h 36m

Deal found 9/9C$ 451

Thu 10/124:00 p.m. -

1 stop29h 50m

Mon 14/122:25 p.m. -

1 stop10h 36m

Deal found 10/9C$ 452

Thu 22/108:55 p.m. -

1 stop19h 05m

Sat 24/101:45 p.m. -

1 stop20h 34m

Deal found 11/9C$ 456

Tue 20/108:55 p.m. -

1 stop19h 05m

Sat 24/101:45 p.m. -

1 stop20h 34m

Deal found 11/9C$ 459

Mon 19/108:10 a.m. -

1 stop11h 45m

Thu 22/101:30 p.m. -

2 stops32h 47m

Deal found 11/9C$ 470

Thu 15/108:55 p.m. -

1 stop15h 30m

Mon 19/1010:50 a.m. -

1 stop8h 31m

Deal found 9/9C$ 476

Mon 19/108:10 a.m. -

1 stop5h 50m

Fri 23/101:45 p.m. -

1 stop20h 34m

Deal found 11/9C$ 477

Sat 14/1110:39 a.m. -

1 stop29h 31m

Thu 19/119:35 a.m. -

2 stops16h 14m

Deal found 8/9C$ 480

Sun 4/1012:15 p.m. -

1 stop9h 55m

Sat 10/101:30 p.m. -

1 stop23h 50m

Deal found 13/9C$ 484

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 13 September 2026.

Thu 1/107:12 p.m. -

2 stops18h 48m

Mon 5/1010:50 a.m. -

1 stop8h 26m

Deal found 10/9C$ 573

Sat 5/121:34 p.m. -

1 stop19h 16m

Tue 8/126:21 p.m. -

1 stop20h 43m

Deal found 10/9C$ 737

Fri 23/1011:33 a.m. -

1 stop7h 59m

Fri 30/108:40 a.m. -

1 stop5h 41m

Deal found 8/9C$ 750

Fri 2/1010:28 a.m. -

2 stops11h 52m

Sun 11/106:55 a.m. -

2 stops16h 56m

Deal found 12/9C$ 752

Tue 12/15:50 a.m. -

1 stop8h 57m

Wed 13/14:00 p.m. -

1 stop7h 58m

Deal found 8/9C$ 879

Thu 8/1012:15 p.m. -

1 stop29h 35m

Sun 11/108:40 p.m. -

1 stop16h 40m

Deal found 13/9C$ 915

Thu 1/107:50 p.m. -

2 stops20h 08m

Tue 6/102:00 p.m. -

3 stops28h 58m

Deal found 8/9C$ 585

Fri 9/108:55 p.m. -

1 stop15h 30m

Wed 14/101:45 p.m. -

1 stop20h 34m

Deal found 8/9C$ 601

Tue 6/106:20 a.m. -

2 stops9h 15m

Mon 12/106:50 a.m. -

2 stops17h 01m

Deal found 12/9C$ 752

Wed 14/1010:38 a.m. -

1 stop27h 22m

Sat 17/1010:50 a.m. -

1 stop8h 31m

Deal found 13/9C$ 621

Fri 23/1010:27 a.m. -

2 stops11h 02m

Fri 30/106:00 a.m. -

2 stops11h 00m

Deal found 8/9C$ 803

Thu 15/1011:25 a.m. -

1 stop6h 25m

Mon 19/108:30 p.m. -

1 stop16h 01m

Deal found 8/9C$ 814

Thu 28/17:00 a.m. -

1 stop8h 51m

Mon 1/29:45 a.m. -

2 stops12h 15m

Deal found 9/9C$ 766

Wed 28/108:55 p.m. -

1 stop16h 11m

Wed 4/111:10 p.m. -

2 stops21h 03m

Deal found 13/9C$ 649

Thu 8/106:05 p.m. -

Nonstop3h 11m

Tue 13/1011:10 p.m. -

1 stop13h 21m

Deal found 8/9C$ 814

Tue 22/129:44 a.m. -

Nonstop3h 18m

Fri 1/14:10 p.m. -

Nonstop4h 03m

Deal found 10/9C$ 907

Tue 23/21:40 p.m. -

1 stop8h 11m

Tue 2/37:00 a.m. -

1 stop7h 58m

Deal found 12/9C$ 767

Thu 15/1010:02 a.m. -

Nonstop3h 12m

Sun 18/1010:45 a.m. -

Nonstop3h 38m

Deal found 13/9C$ 907

Sun 27/912:15 p.m. -

1 stop15h 20m

Tue 29/97:00 a.m. -

2 stops28h 32m

Deal found 10/9C$ 694

Tue 29/95:13 p.m. -

1 stop13h 22m

Mon 5/106:00 a.m. -

2 stops15h 40m

Deal found 8/9C$ 781

Sat 3/1011:25 a.m. -

1 stop8h 05m

Sat 17/1012:15 p.m. -

1 stop7h 35m

Deal found 9/9C$ 906

Fri 9/104:17 p.m. -

Nonstop3h 15m

Fri 16/104:18 p.m. -

Nonstop3h 38m

Deal found 10/9C$ 907

Mon 12/108:55 p.m. -

1 stop15h 30m

Fri 16/101:40 p.m. -

2 stops20h 26m

Deal found 9/9C$ 707

Thu 15/1012:15 p.m. -

1 stop29h 35m

Mon 19/108:40 p.m. -

2 stops22h 16m

Deal found 8/9C$ 1,187

Tue 20/103:14 p.m. -

2 stops18h 30m

Thu 22/101:06 p.m. -

2 stops10h 41m

Deal found 9/9C$ 1,083

Wed 18/117:05 a.m. -

1 stop9h 53m

Thu 26/117:10 a.m. -

2 stops15h 20m

Deal found 10/9C$ 821

Mon 21/129:44 a.m. -

Nonstop3h 18m

Sun 3/14:10 p.m. -

Nonstop4h 03m

Deal found 12/9C$ 907

Thu 24/96:40 a.m. -

2 stops31h 20m

Thu 1/101:45 p.m. -

1 stop20h 30m

Deal found 13/9C$ 709

Tue 6/108:20 a.m. -

2 stops33h 30m

Sun 11/108:40 p.m. -

1 stop16h 40m

Deal found 9/9C$ 1,204

Sat 17/106:00 a.m. -

2 stops15h 25m

Thu 22/109:30 a.m. -

2 stops12h 46m

Deal found 13/9C$ 824

Find flight deals from Colorado to Ontario

Round-trip from	C$ 426
One-way from	C$ 176
Popular in	February
Cheapest in	October
Average price	C$ 888
Good round-trip deal	C$ 261 or less
Good one-way deal	C$ 430 or less

21/10-24/10
2 total stops
39h 39m total
Colorado to Ontario

Search Deals

31/10-31/12
1 total stop
30h 36m total
Colorado to Ontario

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (C$ 58 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from Colorado to Ontario.

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

Thu 15/10

12:15 p.m.-10:45 p.m.

1 stop8h 30m

Toronto Pearson Intl

Wed 31/12

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

Nonstop0h 00m

C$ 198

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Thu 1/10

10:47 p.m.-9:35 p.m.

3 stops20h 48m

Toronto Pearson Intl

Wed 31/12

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

Nonstop0h 00m

C$ 222

DenverToronto

DEN Denver Intl - YTZ Toronto Island

DENYTZ

Denver Intl

Wed 30/9

6:40 a.m.-4:00 p.m.

2 stops31h 20m

Toronto Island

Wed 31/12

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

Nonstop0h 00m

C$ 233

DenverToronto

DEN Denver Intl - YTZ Toronto Island

DENYTZ

Denver Intl

Thu 1/10

7:12 p.m.-4:00 p.m.

2 stops18h 48m

Toronto Island

Wed 31/12

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

Nonstop0h 00m

C$ 236

DenverOttawa

DEN Denver Intl - YOW Ottawa

DENYOW

Denver Intl

Fri 25/9

12:15 p.m.-12:30 p.m.

2 stops22h 15m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 237

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Fri 25/9

12:15 p.m.-12:45 p.m.

2 stops22h 30m

Toronto Pearson Intl

Wed 31/12

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

Nonstop0h 00m

C$ 237

DenverHamilton

DEN Denver Intl - YHM Hamilton

DENYHM

Denver Intl

Sun 27/9

12:15 p.m.-5:15 p.m.

1 stop27h 00m

Hamilton

Wed 31/12

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

Nonstop0h 00m

C$ 246

DenverToronto

DEN Denver Intl - YKF Toronto Region of Waterloo Intl

DENYKF

Denver Intl

Fri 25/9

12:15 p.m.-7:50 p.m.

1 stop29h 35m

Toronto Region of Waterloo Intl

Wed 31/12

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

Nonstop0h 00m

C$ 246

DenverToronto

DEN Denver Intl - YKF Toronto Region of Waterloo Intl

DENYKF

Denver Intl

Sun 27/9

12:15 p.m.-7:50 p.m.

1 stop29h 35m

Toronto Region of Waterloo Intl

Wed 31/12

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

Nonstop0h 00m

C$ 248

DenverToronto

DEN Denver Intl - YKF Toronto Region of Waterloo Intl

DENYKF

Denver Intl

Fri 2/10

12:15 p.m.-7:50 p.m.

1 stop29h 35m

Toronto Region of Waterloo Intl

Wed 31/12

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

Nonstop0h 00m

C$ 257

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 60 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-YTZ

DEN-YYZ

DEN-YUL

COS-YYZ

DEN-YOW

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-YTZ

DEN-YYZ

DEN-YUL

COS-YYZ

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

Currently, November is the cheapest month in which you can book a flight from Colorado to Region of Ontario (average of C$ 768). Flying from Colorado to Region of Ontario in February is currently the most expensive (average of C$ 952). 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.

Weekly flight availability from Colorado to Region of Ontario

The most flights from USCO to CAON are scheduled on a Monday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (7 on average).

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

Airfare is typical for this route at the moment.

Colorado to Region of Ontario flights typically cost between C$ 363 and C$ 938 in October.
The cheapest round-trip price found within the last 5 days was C$ 451 on Multiple Airlines (15 Oct-19 Oct).

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 63 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

11,619 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

11,619 reviews

Air Canada

7.1

Good

11,619 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, Air Canada, and Delta fly from Colorado to Region of Ontario in about 7h 59m. The time it takes to get you to your destination can typically vary by up to 11h 17m. 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, November is the cheapest month in which you can book a flight from Colorado to Region of Ontario (average of C$ 768). Flying from Colorado to Region of Ontario in February is currently the most expensive (average of C$ 952). 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

Los Angeles to Vancouver Intl flights

LaGuardia to Pierre Elliott Trudeau Intl flights

John F Kennedy Intl to Pearson Intl flights

San Francisco to Vancouver Intl flights

LaGuardia to Pearson Intl flights

Newark to Pierre Elliott Trudeau Intl flights

Dulles Intl to Pierre Elliott Trudeau Intl flights

Reagan-National to Pierre Elliott Trudeau Intl flights

John F Kennedy Intl to Pierre Elliott Trudeau Intl flights

Seattle to Vancouver Intl flights

Dulles Intl to Pearson Intl flights

Reagan-National to Pearson Intl flights

John F Kennedy Intl to Vancouver Intl flights

Los Angeles to Pearson Intl flights

Newark to Vancouver Intl flights

John F Kennedy Intl to Toronto Island flights

O'Hare Intl to Pearson Intl flights

Boston to Toronto Island flights

O'Hare Intl to Pierre Elliott Trudeau Intl flights

San Francisco to Pearson Intl flights

Boston to Pierre Elliott Trudeau Intl flights

O'Hare Intl to Vancouver Intl flights

LaGuardia to Toronto Island flights

Newark to Hamilton flights

Boston to Pearson Intl flights

Los Angeles to Pierre Elliott Trudeau Intl flights

Newark to Calgary flights

Dallas/Fort Worth to Pearson Intl flights

Baltimore to Pierre Elliott Trudeau Intl flights

Los Angeles to Calgary flights

Newark to Québec City flights

O'Hare Intl to Calgary flights

Dulles Intl to Toronto Island flights

San Francisco to Calgary flights

Hobby to Pearson Intl flights

Dallas/Fort Worth to Vancouver Intl flights

Portland to Vancouver Intl flights

Seattle to Calgary flights

Fort Lauderdale to Pearson Intl flights

Atlanta to Pearson Intl flights

John F Kennedy Intl to Calgary flights

San Francisco to Pierre Elliott Trudeau Intl flights

Seattle to Pearson Intl flights

Ontario to Vancouver Intl flights

Philadelphia to Pierre Elliott Trudeau Intl flights

Baltimore to Pearson Intl flights

LaGuardia to Vancouver Intl flights

Top airline flying from Colorado to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 355	AverageC$ 936	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$ 176

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 31/10. 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 13 September 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 13 September 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 13 September 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 13 September 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 13 September 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 13 September 2026.

Last-minute flights from Colorado to OntarioDiscover last-minute flight deals from Colorado to Ontario. Data last updated 13 September 2026 and is based on user searches.

Discover last-minute flight deals from Colorado to Ontario. Data last updated 13 September 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 13 September 2026.

Search for one-way flight options from Colorado to Ontario. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Find flight deals from Colorado to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

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 13 September 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.

Weekly flight availability from Colorado to Region of Ontario

Explore weekly flight availability from Colorado 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 13 September 2026.

The most flights from USCO to CAON are scheduled on a Monday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (7 on average).

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

Airfare is typical for this route at the moment.

Colorado to Region of Ontario flights typically cost between C$ 363 and C$ 938 in October.The cheapest round-trip price found within the last 5 days was C$ 451 on Multiple Airlines (15 Oct-19 Oct).

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 63 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 13 September 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 13 September 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 13 September 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 13 September 2026.

Last-minute flights from Colorado to Ontario
Discover last-minute flight deals from Colorado to Ontario. Data last updated 13 September 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 13 September 2026.

Colorado to Region of Ontario flights typically cost between C$ 363 and C$ 938 in October.
The cheapest round-trip price found within the last 5 days was C$ 451 on Multiple Airlines (15 Oct-19 Oct).