How long does a flight from Denver to Ontario take?

The average direct flight takes 2h 20m , covering a distance of 817 miles.

How many flights are there between Denver and Ontario per day?

Each day, there are between 7 and 8 direct flights that take off from Denver and land in Ontario, with an average flight time of 2h 22m. The most common departure time is 18:00 and most flights take off in the morning. Each week, there are 53 flights. The most frequent day of departure is Monday, when 15% of all weekly flights depart. The fewest flights depart on a Tuesday.

What is the cheapest flight from Denver to Ontario?

In the last 5 days, the lowest price for a flight from Denver to Ontario was £60 for a one-way ticket and £59 for a return.

Which airlines fly most frequently between Denver and Ontario?

Southwest connects Denver to Ontario with 25 flights per week. Frontier also offers 14 flights per week, while United Airlines follows with 14 flights per week.

Which airports will I be using when flying from Denver to Ontario?

Denver airport is called Denver Intl and the only airport in Ontario is Ontario.

What’s the earliest departure time from Denver to Ontario?

Early birds can take the earliest flight from Denver at 08:00 and will be landing in Ontario at 09:25.

What’s the latest departure time from Denver to Ontario?

If you prefer to fly at night, the latest flight from Denver to Ontario jets off at 22:29 and lands at 23:50.

Which airlines offer Wi-Fi service onboard planes from Denver to Ontario?

Alaska Airlines, Delta, JetBlue, American Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the Denver to Ontario flight route.

Which aircraft models fly most regularly from Denver to Ontario?

The Airbus A320neo is the aircraft model that flies most regularly on the Denver to Ontario flight route.

On which days can I fly direct from Denver to Ontario?

There are direct flights from Denver to Ontario on a daily basis.

What is the cheapest month to fly from Denver to Ontario?

The cheapest month for flights from Denver to Ontario is May , where tickets cost £133 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £219 and £219 respectively.

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

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 Denver to Ontario.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Denver 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 Denver to Ontario?

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

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

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 to Ontario from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Which airlines provide the cheapest flights from Denver to Ontario?

In the past 5 days, the cheapest return tickets from Denver to Ontario were found on Frontier (£59) and Southwest (£119).

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

To get a below average price on the flight from Denver to Ontario, you should book around 2 weeks before departure , which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

How much is a return flight from Denver to Ontario?

Flight prices are below average for this route right now. Flights to Ontario from Denver usually cost between £113 and £209 in October. The lowest price found in the past 5 days was £59 on Frontier (24 Oct–28 Oct).

£59 CHEAP FLIGHTS from Denver to Ontario (DEN - ONT)

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest return fare

£59

Typical prices: £113-£209

Frontier

Sat 24/10Wed 28/10

DEN - ONT • Direct

Cheapest one-way flight

£60

Typical prices: £67-£160

Southwest

Wed 21/10

DEN - ONT • Direct

Direct flights

Every day

You can fly direct with Frontier, Southwest, and United Airlines. Average duration is 2h 22m

Direct flights

When to book

2 weeks

in advance

Our data shows that travellers who book at least 2 weeks in advance save around 28% compared to booking last minute.

Insights

When to travel

May

Cheapest • 23% price drop

October

Most popular

Good to know

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to Ontario!

Flight Deals

Cheap Flights from Denver to Ontario (DEN-ONT)

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Direct

Recent return flight deals from Denver to Ontario

Sat, 24 Oct - Wed, 28 Oct

09:01 - 10:29DEN Denver Intl-ONT Ontario

2h 28mdirect

06:25 - 09:46ONT Ontario-DEN Denver Intl

2h 21mdirect

£59Frontier

Sat, 24 Oct - Wed, 28 Oct

09:01 - 10:29DEN Denver Intl-ONT Ontario

2h 28mdirect

17:07 - 23:49ONT Ontario-DEN Denver Intl

5h 42m1 stop Las Vegas Harry Reid Intl

£85Frontier

Mon, 26 Oct - Thu, 29 Oct

22:29 - 23:50DEN Denver Intl-ONT Ontario

2h 21mdirect

11:52 - 15:13ONT Ontario-DEN Denver Intl

2h 21mdirect

£88Frontier

Mon, 26 Oct - Thu, 29 Oct

22:29 - 23:50DEN Denver Intl-ONT Ontario

2h 21mdirect

14:23 - 23:49ONT Ontario-DEN Denver Intl

8h 26m1 stop Las Vegas Harry Reid Intl

£93Frontier

Sat, 12 Dec - Sat, 12 Dec

08:40 - 10:05DEN Denver Intl-ONT Ontario

2h 25mdirect

11:20 - 14:30ONT Ontario-DEN Denver Intl

2h 10mdirect

£119Southwest

Sat, 24 Oct - Wed, 28 Oct

06:05 - 16:48DEN Denver Intl-ONT Ontario

11h 43m1 stop Dallas/Fort Worth

17:07 - 23:49ONT Ontario-DEN Denver Intl

5h 42m1 stop Las Vegas Harry Reid Intl

£120Frontier

Mon, 26 Oct - Thu, 29 Oct

20:45 - 09:40DEN Denver Intl-ONT Ontario

13h 55m1 stop Las Vegas Harry Reid Intl

12:01 - 09:40ONT Ontario-DEN Denver Intl

20h 39m1 stop San Francisco

£126Frontier

Mon, 11 Jan - Sat, 16 Jan

14:55 - 20:02DEN Denver Intl-ONT Ontario

6h 07m1 stop Portland

07:10 - 14:07ONT Ontario-DEN Denver Intl

5h 57m1 stop Portland

£134Alaska Airlines

Sat, 5 Dec - Mon, 7 Dec

12:30 - 19:10DEN Denver Intl-ONT Ontario

7h 40m2 stops Portland Sacramento Intl

07:05 - 12:25ONT Ontario-DEN Denver Intl

4h 20m1 stop San Jose

£138Southwest

Sat, 5 Dec - Mon, 7 Dec

19:45 - 21:11DEN Denver Intl-ONT Ontario

2h 26mdirect

05:00 - 08:17ONT Ontario-DEN Denver Intl

2h 17mdirect

£141United Airlines

Booking Insights

KAYAK’s insights & trends for Denver to Ontario flights

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

Prices

Airlines

How much is a return flight from Denver to Ontario? This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Ontario departing in October.
What is the cheapest month to fly from Denver to Ontario? To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Ontario, 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 Denver to Ontario is May, where tickets cost £133 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £219 and £219 respectively.
How far in advance should I book a flight from Denver to Ontario? To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Ontario, 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 Denver to Ontario, you should book around 2 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Find deals

Low season	August
High season	October
Cheapest flight	£59

Best time to beat the crowds but there is an average 12% increase in price.

Most popular time to fly and prices are also 10% lower on average.

Flight from Denver to Ontario

When to book flights from Denver to Ontario

Are your dates flexible? Find out the best times to travel from Denver to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from Denver to Ontario?
In the last 5 days, the lowest price for a flight from Denver to Ontario was £60 for a one-way ticket and £59 for a return.
Which airports will I be using when flying from Denver to Ontario?
Denver airport is called Denver Intl and the only airport in Ontario is Ontario.
Which airlines offer Wi-Fi service onboard planes from Denver to Ontario?
Alaska Airlines, Delta, JetBlue, American Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the Denver to Ontario flight route.
Which aircraft models fly most regularly from Denver to Ontario?
The Airbus A320neo is the aircraft model that flies most regularly on the Denver to Ontario flight route.
On which days can I fly direct from Denver to Ontario?
There are direct flights from Denver to Ontario on a daily basis.
How does KAYAK find such low prices on flights from Denver to Ontario?
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 Denver to Ontario.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Ontario?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Denver 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 Denver to Ontario?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Ontario with an airline and back to Denver with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Ontario?
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 to Ontario from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Looking for a cheap flight from Ontario to Denver? 25% of our users found flights on this route for £120 or less one-way.

Direct departures

Denver Intl to Ontario

Monday