$81+ Cheap flights from Washington, D.C. (WAS) to Ontario (ONT)

Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from Washington, D.C.. Booking flights from Washington, D.C. to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 6 different airlines.

Yes, there are multiple flights from Washington, D.C. to Ontario for under $200. The cheapest flight booked recently is on Frontier for just $148, but on average you can expect to pay $357.

There are currently 15+ open flights from Washington, D.C. to Ontario within the next 7 days for less than $200.

Cheapflights users have booked flights from Washington, D.C. to Ontario round-trip from $148. Other airlines that can offer you cheap pricing are United Airlines, from $341, and Delta, from $346. Users have found that Frontier is 58% cheaper than the other options available to this destination.

The cheapest airlines for a one-way flight from Washington, D.C. to Ontario are Frontier ($81), Delta ($163), and American Airlines ($168).

The most popular route from Washington, D.C. to Ontario is Washington, D.C. Reagan-National - Ontario. You may also consider Baltimore/Washington - Ontario or Washington, D.C. Dulles Intl - Ontario.

Washington, D.C. Dulles Intl Airport is IAD and Ontario Airport is ONT. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. Ready for more IATA code knowledge? These are related airports for your current travel destination: Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA).

The amount of baggage you can bring on your Washington, D.C. to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Washington, D.C. to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on Washington, D.C. to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Ontario.

Yes. Cheapflights offers flight deals from Washington, D.C. to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from Washington, D.C. to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Washington, D.C. to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Washington, D.C. to Ontario flight deals you see on this page were last updated on 11/4.

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Ontario (average of $236). Flying from Washington, D.C. to Ontario in December is currently the most expensive (average of $298). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.