Cheap flights from Washington, D.C. to Ontario

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Travelers usually depart from Washington Dulles International, Baltimore–Washington International, Ronald Reagan Washington National, Washington Union Station, or Washington-Rosslyn when they travel from Washington, D.C. to Ontario. Book your trip to arrive at Ontario International, Ontario, CA station, Montclair (Ontario), or Ontario Bus Stop. The most popular airlines for this route are American Airlines, Southwest Airlines, Delta Air Lines, United Airlines, and Frontier Airlines. Washington, D.C. and Ontario have 192 direct flights per week.

Weekly flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Number of flights44302439-2134

Check-in for a flight from Washington, D.C. to Ontario

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

Frequently asked questions

What are the most popular routes to and from Washington, D.C.?

Travelers frequently search for route combinations, such as Washington, D.C. and Orlando International, Miami International, McCarran International, Fort Lauderdale–Hollywood International, Denver International, Luis Muñoz Marín International, Hartsfield–Jackson Atlanta International, Tampa International, Dallas/Fort Worth International, George Bush Intercontinental, LaGuardia.

What are the most popular routes to and from Ontario?

Travelers frequently search for route combinations, such as Ontario and Denver International, Tampa International, Phoenix Sky Harbor International, Ronald Reagan Washington National, Nashville International, Minneapolis–Saint Paul International, Sacramento International, Kansas City International, San Jose International, McGhee Tyson, Oakland International.

Which airports are there in Washington, D.C.?

Washington, D.C. is mainly served by Washington Dulles International. But there are other airports nearby, including Baltimore–Washington International, Ronald Reagan Washington National.

What airports are near Washington, D.C.?

The main airport in Washington, D.C. is Washington Dulles International. It is also served by Philadelphia International, Norfolk International, Richmond International, Harrisburg International, Atlantic City International, Trenton–Mercer, Lehigh Valley International, Altoona–Blair County, Lancaster, Hagerstown Regional.

What airports are near Ontario?

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

What buses and trains depart from Washington, D.C.?

A number of bus and train companies depart from Washington, D.C., including Amtrak train.

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