Question 1

How long does it take to travel from Denver to Ontario?

Accepted Answer

A one-way nonstop (direct) flight between Denver and Ontario takes around 2.4 hours.

Question 2

What is the flight distance between Denver and Ontario?

Accepted Answer

The flight distance between Denver and Ontario is 1317 km.

Question 3

What airlines offer nonstop (direct) flights between Denver and Ontario?

Accepted Answer

Several carriers operate flights between Denver and Ontario. Airlines offering nonstop (direct) flights include United Airlines, Frontier Airlines.

Question 4

What are the most popular routes to and from Denver?

Accepted Answer

Travelers frequently search for route combinations, such as Denver and Las Vegas, Los Angeles, Chicago, Minneapolis, Dallas, Washington, D.C., Orlando, Phoenix, San Francisco, Houston, San Diego, Austin, Atlanta, Paris, Philadelphia, New York, Miami, London, Seattle, Tampa.

Question 5

What are the most popular routes to and from Ontario?

Accepted Answer

Travelers frequently search for route combinations, such as Ontario and Orlando, Austin, Atlanta, Sacramento, Seattle, San Francisco, Washington, D.C., San Jose, San Antonio, Raleigh, Phoenix, Charlotte, Portland, Detroit, Philadelphia, Las Vegas, Oakland, Nashville, Chicago, Fort Lauderdale.

Question 6

Which airports are there in Denver?

Accepted Answer

Denver is mainly served by Denver International. But there are other airports nearby, including Rocky Mountain Metropolitan Airport, Centennial Airport.

Question 7

What airports are near Denver?

Accepted Answer

The main airport in Denver is Denver International. It is also served by Colorado Springs, Pueblo Memorial, Cheyenne Regional, Eagle County Regional, Laramie Regional.

Question 8

What airports are near Ontario?

Accepted Answer

The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, Ontario International, John Wayne, Palm Springs International, Hollywood Burbank, Long Beach, Meadows Field, Santa Barbara Municipal, Imperial County.

Question 9

Is it possible to combine flights, buses, and trains in one itinerary when traveling between Denver and Ontario?

Accepted Answer

Yes, it's possible to combine different modes of transport between Denver and Ontario thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Denver and Ontario can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Question 10

What is Virtual Interlining and how do I use it?

Accepted Answer

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Question 11

Which airlines fly between Denver and Ontario?

Accepted Answer

Currently, you can fly between Denver and Ontario with Frontier Airlines, United Airlines.

Question 12

When's the best time to travel between Denver and Ontario?

Accepted Answer

If you don’t have specific dates for your trip between Denver and Ontario, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Question 13

What flights operate between Denver and Ontario?

Accepted Answer

Traveling between Denver and Ontario, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What's more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

Question 14

How many airports are there near Denver?

Accepted Answer

There are a number of airports in and around Denver. The main one is Denver International and other nearby airports include Colorado Springs, Pueblo Memorial, Cheyenne Regional, Eagle County Regional, Laramie Regional

Question 15

How many airports are there near Ontario?

Accepted Answer

There are a number of airports in and around Ontario. The main one is Ontario International and other nearby airports include Tijuana International, San Diego International, Ontario International, John Wayne, Palm Springs International, Hollywood Burbank, Long Beach, Meadows Field, Santa Barbara Municipal, Imperial County.

Question 16

What time do nonstop (direct) flights between Denver and Ontario depart?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Denver, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 17

What time do nonstop (direct) flights between Denver and Ontario arrive?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Ontario, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Question 18

What time do flights between Denver and Ontario depart?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Denver, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 19

What time do flights between Denver and Ontario arrive?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Ontario, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Cheapest one-way trip	$34
Cheapest nonstop round-trip	$34
Cheapest round-trip	$68
Average round-trip	$107
Nonstop flights in May	$34 – $285

Airline	Sun 21.04	Mon 22.04	Tue 23.04	Wed 24.04	Thu 25.04	Fri 26.04	Sat 27.04
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	2	2	2	2	2	2	2

Airline	Sun 28.04	Mon 29.04	Tue 30.04	Wed 01.05	Thu 02.05	Fri 03.05	Sat 04.05
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	2	2	2	2	2	2	2

Airline	Sun 05.05	Mon 06.05	Tue 07.05	Wed 08.05	Thu 09.05	Fri 10.05	Sat 11.05
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	2	2	2	2	2	2	2

Airline	Sun 12.05	Mon 13.05	Tue 14.05	Wed 15.05	Thu 16.05	Fri 17.05	Sat 18.05
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	2	2	2	2	2	2	2

Cheap flights from Denver, CO to Ontario, CA

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Weekly direct flights for Sun 21.04 - Sat 27.04

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Name	Carrier code	IATA Code	Passport needed during booking	Online check-in available
Frontier Airlines	FFT	F9	No	Opens 24 days before flight Closes 1 hours before flight
United Airlines	UAL	UA	Yes	No

Month	Average monthly max temperature	Average monthly min temperature
January	18°C	7°C
February	18°C	7°C
March	20°C	8°C
April	23°C	10°C
May	25°C	13°C
June	29°C	16°C
July	33°C	19°C
August	33°C	20°C
September	32°C	18°C
October	27°C	15°C
November	22°C	10°C
December	17°C	7°C