Question 1

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

Accepted Answer

A one-way nonstop (direct) flight between Ontario and Denver takes around 2.3 hours.

Question 2

What is the flight distance between Ontario and Denver?

Accepted Answer

The flight distance between Ontario and Denver is 1317 km.

Question 3

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

Accepted Answer

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

Question 4

What are the most popular routes to and from Ontario?

Accepted Answer

Travelers frequently search for route combinations, such as Ontario and Orlando, Austin, Las Vegas, Atlanta, Sacramento, San Francisco, Seattle, San Antonio, Guadalajara, Charlotte, New Orleans, Fort Lauderdale, Philadelphia, Washington, D.C., Oakland, San Jose, Detroit, Minneapolis, Chicago, Houston.

Question 5

What are the most popular routes to and from Denver?

Accepted Answer

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

Question 6

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, John Wayne, Ontario International, Hollywood Burbank, Palm Springs International, Imperial County, Long Beach, Santa Barbara Municipal, Meadows Field.

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, Eagle County Regional, Cheyenne Regional, Laramie Regional.

Question 8

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

Accepted Answer

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

Question 9

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 10

Which airlines fly between Ontario and Denver?

Accepted Answer

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

Question 11

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

Accepted Answer

If you don’t have specific dates for your trip between Ontario and Denver, 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 12

What flights operate between Ontario and Denver?

Accepted Answer

Traveling between Ontario and Denver, 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 13

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, John Wayne, Ontario International, Hollywood Burbank, Palm Springs International, Imperial County, Long Beach, Santa Barbara Municipal, Meadows Field

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, Eagle County Regional, Cheyenne Regional, Laramie Regional.

Question 15

What time do nonstop (direct) flights between Ontario and Denver 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 Ontario, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 16

What time do nonstop (direct) flights between Ontario and Denver 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 Denver, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Question 17

What time do flights between Ontario and Denver 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 Ontario, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 18

What time do flights between Ontario and Denver 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 Denver, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Cheapest one-way trip	$43
Cheapest round-trip	$82
Average round-trip	$98
Nonstop flights in December	$43 – $211
Most popular airline	Frontier Airlines

Airline	Sun 19.11	Mon 20.11	Tue 21.11	Wed 22.11	Thu 23.11	Fri 24.11	Sat 25.11
United Airlines	2	2	2	2	1	2	2
Frontier Airlines	2	2	2	2	2	2	2

Airline	Sun 26.11	Mon 27.11	Tue 28.11	Wed 29.11	Thu 30.11	Fri 01.12	Sat 02.12
United Airlines	2	2	2	4	2	3	2
Frontier Airlines	2	2	2	2	2	2	2

Airline	Sun 03.12	Mon 04.12	Tue 05.12	Wed 06.12	Thu 07.12	Fri 08.12	Sat 09.12
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	2	2	2	2	2	2	2

Airline	Sun 10.12	Mon 11.12	Tue 12.12	Wed 13.12	Thu 14.12	Fri 15.12	Sat 16.12
United Airlines	2	2	2	2	2	2	2
Frontier Airlines	2	2	2	2	2	2	2

Cheap flights from Ontario, CA to Denver, CO

Flights starting at $43. Choose between Frontier Airlines, American Airlines, or United Airlines to find the best price.

Tips to know when travelling to Denver

Cheapest one-way trip

Cheapest round-trip

Average round-trip

Nonstop flights in December

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Weekly direct flights

Weekly direct flights for Sun 19.11 - Sat 25.11

Weekly direct flights for Sun 26.11 - Sat 02.12

Weekly direct flights for Sun 03.12 - Sat 09.12

Weekly direct flights for Sun 10.12 - Sat 16.12

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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
American Airlines	AAL	AA	No	No
United Airlines	UAL	UA	Yes	No
Alaska Airlines	ASA	AS	No	Opens 24 days before flight Closes 1 hours before flight
Spirit Airlines	NKS	NK	No	Opens 24 days before flight Closes 1 hours before flight