Cheap flights from Denver to Ontario

Choose between Southwest Airlines, Frontier Airlines, or American Airlines to find the best price

Travelers usually depart from Denver International, Denver Union Station, or Denver Greyhound station when they travel from Denver to Ontario. Book your trip to arrive at Ontario International, Ontario, CA station, Montclair (Ontario), or Ontario Bus Stop. The distance between Denver and Ontario is 1317 km. The most popular airlines for this route are Southwest Airlines, Frontier Airlines, American Airlines, United Airlines, and Delta Air Lines. Denver and Ontario have 203 direct flights per week.

Weekly flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Number of flights22311653-1467

Fly direct with

Frontier Airlines on Mondays, Thursdays, Fridays, and Saturdays.

Southwest Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Check-in for a flight from Denver to Ontario

NameCarrier codeIATA CodePassport needed during bookingAirport check-in closesOnline check-in available
Southwest AirlinesSWAWNNoUnknownNo
Frontier AirlinesFFTF9NoUnknownNo
American AirlinesAALAAYesUnknownNo
United AirlinesUALUAYesUnknownNo
Delta Air LinesDALDLYesUnknownNo

Frequently asked questions

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

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

What is the flight distance between Denver and Ontario?

The flight distance between Denver and Ontario is 1317 km.

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

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

What are the most popular routes to and from Denver?

Travelers frequently search for route combinations, such as Denver and Los Angeles International, McCarran International, Miami International, Orlando International, Fort Lauderdale–Hollywood International, George Bush Intercontinental, Phoenix Sky Harbor International, O Hare International, Minneapolis–Saint Paul International, Austin–Bergstrom International, Detroit Metropolitan.

What are the most popular routes to and from Ontario?

Travelers frequently search for route combinations, such as Ontario and Denver International, Hartsfield–Jackson Atlanta International, Dallas Love Field, Baltimore–Washington International, O Hare International, Philadelphia International, Portland International, Raleigh–Durham International, Detroit Metropolitan, Cincinnati/Northern Kentucky International, Will Rogers World.

Which airports are there in Denver?

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

What airports are near Denver?

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

What airports are near Ontario?

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, Long Beach, Imperial County, Meadows Field, Santa Barbara Municipal.

What buses and trains depart from Denver?

A number of bus and train companies depart from Denver, including Bustang, Greyhound.

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

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Which airlines fly between Denver and Ontario?

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

What flights operate between Denver and Ontario?

How many airports are there near Denver?

How many airports are there near Ontario?

Is it possible to reach Denver by bus or train?

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

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

What time do flights between Denver and Ontario depart?

What time do flights between Denver and Ontario arrive?

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