Cheap flights from Denver to Ontario

Choose between Southwest Airlines, United Airlines, or Frontier 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, or Montclair (Ontario). The distance between Denver and Ontario is 1317 km. The most popular airlines for this route are Southwest Airlines, United Airlines, Frontier Airlines, Delta Air Lines, and Alaska Airlines. Denver and Ontario have 221 direct flights per week.

Weekly flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Number of flights41432340-3341

Fly direct with

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

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

Southwest 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
United AirlinesUALUAYesUnknownNo
Frontier AirlinesFFTF9NoUnknownNo
Delta Air LinesDALDLYesUnknownNo
Alaska AirlinesASAASYesUnknownNo

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 Frontier Airlines, United 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, Fort Lauderdale–Hollywood International, Dallas/Fort Worth International, George Bush Intercontinental, Phoenix Sky Harbor International, O Hare International, Minneapolis–Saint Paul International, Nashville International, Detroit Metropolitan, St. Louis Lambert International.

What are the most popular routes to and from Ontario?

Travelers frequently search for route combinations, such as Ontario and Miami International, Orlando International, Fort Lauderdale–Hollywood International, Denver International, Hartsfield–Jackson Atlanta International, O Hare International, Nashville International, Charlotte Douglas International, Philadelphia International, Austin–Bergstrom International, Raleigh–Durham International.

Which airports are there in Denver?

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

What airports are near Denver?

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

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

What buses and trains depart from Denver?

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

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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