Cheap flights from Denver to Ontario (DEN - ONT)

DEN — ONT
Aug 9 — Aug 164

The best prices from Denver Intl to Ontario are usually found in October or September, booked 51 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

How to find the cheapest flight from Denver (DEN) to Ontario (ONT)

All the information you need to plan the best DEN to ONT flight in 2022: compare Denver to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

DEN - ONT

Price

$87 - $214

ONT

Temperature

53.6 - 78.8 °F

ONT

Rainfall

0.1 - 3.4 inches

Popular inMarchHigh demand for flights, 29% potential price rise
Cheapest inOctoberBest time to find cheap flights, 43% potential price drop
Average price$97Average for round-trip flights in August 2022
Round-trip from$87From Denver Intl to Ontario

What is the cheapest day to fly round-trip from Denver to Ontario?

Wednesday is generally a great day to depart. Flying on this day could help you save up to 12%.

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

To save on the cost of your flight from Denver to Ontario, book at least 58 days before your planned departure. Booking around this time can save you about 46% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $189 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $217.

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

September is one of the best times of the year to fly to Ontario from Denver. Prices for September average $216 per person but you can even find prices for as low as $53. The most expensive prices can be found in the month of February. Opting for a September flight can save you 126% on your journey compared to booking in February

When is the cheapest time to fly from Denver to Ontario (DEN - ONT)?

One of the essential ways to save on airfare from Denver to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 27% on airfare.

Cheap flights from Denver to Ontario in August, September 2022

The best prices found for DEN to ONT flights for August, September
Aug 23 - Aug 30
DEN

Denver Intl

ONT

Ontario

1 stop

5h 54m
ONT

Ontario

DEN

Denver Intl

1 stop

10h 09m
$93

Frontier

Pick Dates

Deal found 1/8/22

Aug 23 - Aug 30
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$94

Frontier

Pick Dates

Deal found 1/8/22

Aug 24 - Sep 3
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 19m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$98

Frontier

Pick Dates

Deal found 3/8/22

Denver to Ontario 2022 flight deals

Cheap flights to Ontario from Denver found for this year
Aug 23 - Aug 30
DEN

Denver Intl

ONT

Ontario

1 stop

5h 54m
ONT

Ontario

DEN

Denver Intl

1 stop

10h 09m
$93

Frontier

Pick Dates

Deal found 1/8/22

Aug 23 - Aug 30
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$94

Frontier

Pick Dates

Deal found 1/8/22

Aug 24 - Sep 3
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 19m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$98

Frontier

Pick Dates

Deal found 3/8/22

Cheap Frontier flights from Denver to Ontario

Aug 23 - Aug 30
DEN

Denver Intl

ONT

Ontario

1 stop

5h 54m
ONT

Ontario

DEN

Denver Intl

1 stop

10h 09m
$93

Frontier

Pick Dates

Deal found 1/8/22

Aug 29 - Aug 31
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$94

Frontier

Pick Dates

Deal found 4/8/22

Aug 24 - Sep 3
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 19m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$98

Frontier

Pick Dates

Deal found 3/8/22

Non-stop flights to Ontario from Denver

Save time with Denver to Ontario direct flight deals
Aug 29 - Aug 31
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$94

Frontier

Pick Dates

Deal found 4/8/22

Aug 24 - Sep 3
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 19m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$98

Frontier

Pick Dates

Deal found 3/8/22

Sep 10 - Sep 14
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 24m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 21m
$99

Frontier

Pick Dates

Deal found 3/8/22

Last minute flights from Denver to Ontario

Late deals on return flights to Ontario from Denver, departing today and this week
Aug 9 - Aug 15
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 26m
$101

Frontier

Pick Dates

Deal found 3/8/22

Aug 9 - Aug 13
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 26m
$107

Frontier

Pick Dates

Deal found 2/8/22

Aug 9 - Aug 27
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 19m
ONT

Ontario

DEN

Denver Intl

Nonstop

2h 24m
$109

Frontier

Pick Dates

Deal found 3/8/22

One-way flights to Ontario from Denver

The cheapest one-way flights from Denver to Ontario
Aug 23
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
$47

Frontier

Pick Dates

Deal found 2/8/22

Aug 26
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
$50

Frontier

Pick Dates

Deal found 2/8/22

Aug 13
DEN

Denver Intl

ONT

Ontario

Nonstop

2h 20m
$51

Frontier

Pick Dates

Deal found 1/8/22

Related info for your journey

Useful info, stats and facts about Denver to Ontario flights.

What airports do I use to fly from Denver to Ontario?

You will need to book a flight from Denver Intl to Ontario if you want to fly from Denver to Ontario. At least 9 different airlines have flights from Denver Intl (DEN) to Ontario (ONT) on a regular basis. There are 12 flights to Ontario from the Denver airport per day. If you manage to book one that is nonstop, then you can expect the flight time from DEN to ONT to be around 2h 15m.

Which airlines flying from Denver Intl to Ontario have flexible cancellations due to COVID-19?

Some of our airline partners flying from Denver Intl to Ontario have new flexible policies in place due to COVID-19. Frontier, United Airlines, and Juneyao Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Frontier with this kind of flexibility.

Can I find flights from Denver to Ontario for under $100 on Cheapflights?

Yes, there are multiple flights from Denver to Ontario for under $100. The cheapest flight booked recently is on Frontier for just $93, but on average you can expect to pay $106.

Are there nonstop flights from Denver to Ontario for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Denver to Ontario under $100. A good price for a nonstop flight from Denver to Ontario is less than $111.

Are there last-minute flights available from Denver to Ontario for under $200?

There are currently 20+ open flights from Denver to Ontario within the next 7 days for less than $200.

What days are nonstop flights available from Denver to Ontario?

Days when nonstop flights are available for this flight are: Sunday, Thursday.

How popular is this Denver to Ontario flight route?

Flights from Denver Intl to Ontario have been viewed 66 times in the past calendar month.

How many flights depart from Denver to Ontario on average per day?

On average 1 flight departs from Denver to Ontario per day.
Evening (6pm - Midnight) - 100% of flight departures

How long is the flight from Denver to Ontario?

There are many flights that can get you from Denver to Ontario in 5h 54m. Fly via Frontier to get the fastest option. Airlines will cover a distance of 822 mi.

What is the cheapest airline to fly from Denver to Ontario round-trip?

According to our current data, Frontier ($93), offers the cheapest pricing from Denver to Ontario. Frontier is priced at 38% lower than the current average price of a flight leaving 3 months from now.

What are the most popular airlines that fly from Denver to Ontario?

Consider Undisclosed Carrier, American Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Denver to Ontario.

What are the most reliable airlines from Denver to Ontario?

Before booking your flight to Ontario from Denver, check out the most reliable airlines to get you to your destination on time: United Airlines (84%), SkyWest Airlines (84%), Frontier( 75%).

What are the cheapest flights from Denver to Ontario?

The cheapest flight price from Denver to Ontario is $57. On average you can expect to pay $364. The most popular route, (Denver Intl - Ontario), can usually be booked for $126.

Alternative routes for Denver to Ontario

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

Top 5 airlines flying from Denver to Ontario

The chart below displays the airlines Cheapflights users traveling from Denver to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$12Average$24FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
FrontierCheapest$47Average$148FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
DeltaCheapest$91Average$265FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$91Average$244FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
United AirlinesCheapest$98Average$257FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights

Hourly flight availability from Denver to Ontario

See what time of day planes typically take off from Denver to Ontario
11%of flight departuresEarly morningMidnight to 6 am
34%of flight departuresMorning6 am to noon
23%of flight departuresAfternoonNoon to 6 pm
32%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Denver to Ontario

See how many times per day planes take to the skies headed from Denver to Ontario
Sunday11daily flights
Monday12daily flights
Tuesday12daily flights
Wednesday13daily flights
Thursday11daily flights
Friday13daily flights
Saturday12daily flights