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 2.5 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 Frontier Airlines, United 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 Mexico City, Los Angeles, Las Vegas, Miami, Guadalajara, Orlando, Dallas, Chicago, Phoenix, Fort Lauderdale, Atlanta, San Diego, Chihuahua, San Francisco, Minneapolis, Seattle, Tampa, Houston, New York, Cancún.

Question 5

What are the most popular routes to and from Ontario?

Accepted Answer

Travelers frequently search for route combinations, such as Ontario and Dallas, Las Vegas, San Francisco, Portland, Guadalajara, Seattle, Phoenix, Minneapolis, Sacramento, Salt Lake City, Atlanta, Houston, Orlando, Boise, Chicago, Cleveland, San Jose, Albuquerque, Mexico City, Kansas City.

Question 6

What airports are near Denver?

Accepted Answer

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

Question 7

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, Imperial County, Santa Barbara Municipal, Meadows Field.

Question 8

Which airlines fly between Denver and Ontario?

Accepted Answer

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

Question 9

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 10

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 11

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 Denver International, Colorado Springs, Eagle County Regional, Pueblo Memorial, Laramie Regional, Cheyenne Regional

Question 12

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, Imperial County, Santa Barbara Municipal, Meadows Field.

Question 13

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 14

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 15

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 16

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 round-trip	$65
Average round-trip	$211
Nonstop flights in January	$34 – $341
Most popular airline	Frontier Airlines

Airline	Sun 12.01	Mon 13.01	Tue 14.01	Wed 15.01	Thu 16.01	Fri 17.01	Sat 18.01
United Airlines	---	---	---	2	2	2	2
Frontier Airlines	---	---	---	1	2	2	1
Weekly flights: 14 total	Daily flights: 2 average	Most flights: Wednesday 2 flights

Airline	Sun 19.01	Mon 20.01	Tue 21.01	Wed 22.01	Thu 23.01	Fri 24.01	Sat 25.01
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	1	2	1	1	2	2	1
Weekly flights: 24 total	Daily flights: 3.43 average	Most flights: Sunday 2 flights

Airline	Sun 26.01	Mon 27.01	Tue 28.01	Wed 29.01	Thu 30.01	Fri 31.01	Sat 01.02
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	1	2	1	1	2	2	1
Weekly flights: 24 total	Daily flights: 3.43 average	Most flights: Sunday 2 flights

Airline	Sun 02.02	Mon 03.02	Tue 04.02	Wed 05.02	Thu 06.02	Fri 07.02	Sat 08.02
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	1	2	1	1	2	2	1
Weekly flights: 24 total	Daily flights: 3.43 average	Most flights: Sunday 2 flights

Cheap flights from Denver, CO to Ontario, CA

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Cheapest one-way trip

Cheapest round-trip

Average round-trip

Nonstop flights in January

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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	12°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

Name	Carrier code	IATA Code	Passport needed during booking
Frontier Airlines	FFT	F9	No
United Airlines	UAL	UA	Yes