Flight prices from Ontario to Washington Dulles

There’s no fixed price — fares between Ontario and Washington can vary a lot by day or time.

Choose a date to explore the best fares now.

The lowest fares are often found with some flexibility in travel dates. If your plans are flexible, you’ll have a better chance of finding cheap flights.

Which departure and arrival airports are available?

Between Ontario and Washington, flight options may depend on the combination of airports available.

• Airports in Ontario: Only Ontario is currently in operation.
• Airports in Washington: Washington is served by 3 airports - Dulles international, Ronald Reagan, Washington International.

Sometimes flying into a nearby city can be more cost-effective. When a city has multiple airports, it’s worth comparing different flight combinations.

Customize your flight from Ontario to Washington Dulles

Jetcost allows you to filter by travel dates, duration, layovers, carriers, and booking providers. You’ll find direct and connecting flights, one-way or round-trip, from Delta, American, United, Expedia, eDreams, and more.

Other popular destinations

Thinking about United States? You might also consider: Atlanta, Los Angeles, Miami, New York City, Orlando.

You can sort results by price, duration, or departure time to find the best option for you. When available, results always include both low-cost and traditional airlines.