Cheap flights from Ontario (ONT) to Dulles Intl (IAD) from $145

Most people fly from Ontario (ONT) if they book a flight from Ontario to Washington, D.C. Dulles Intl. On average, Ontario has 0 outbound flights to Washington, D.C. Dulles Intl per day from 5 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

Yes, there are multiple flights from Ontario to Washington, D.C. Dulles Intl Airport for under $300. The cheapest flight booked recently is on Delta for just $290, but on average you can expect to pay $342.

There are currently 20+ open flights from Ontario to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $600.

Cheapflights users have booked flights from Ontario to Washington, D.C. Dulles Intl Airport round-trip from $290. Other airlines that can offer you cheap pricing are American Airlines, from $295, and United Airlines, from $346. Users have found that Delta is 26% cheaper than the other options available to this destination.

To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $145. Alaska Airlines flights start at $149 while deals on American Airlines start at $150 one-way.

ONT and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. ONT to IAD refers to a flight route from Ontario Airport to Washington, D.C. Dulles Intl Airport.

The amount of baggage you can bring on your Ontario to Dulles Intl 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 Ontario to Dulles Intl 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 Ontario to Dulles Intl 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 Ontario to Dulles Intl.

Yes. Cheapflights offers flight deals from Ontario to Dulles Intl 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 Ontario to Dulles Intl 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 Ontario to Dulles Intl 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 Ontario to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 6/9.

When booking a flight from Ontario to Washington, D.C. Dulles Intl Airport, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

Currently, September is the cheapest month in which you can book a flight from Ontario to Washington, D.C. Dulles Intl Airport (average of $278). Flying from Ontario to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $382). 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.