1,378 - 2,690 AUD
In general when looking for the cheapest flight to Washington, try to book your flight during the month of May for the best deal.
From most locations, booking your flights to Washington around 30 days prior to your departure date finds the best deals.
From most locations, the cheapest day to fly to Washington is Thursday. Most users found that departing on a Saturday was most expensive.
On average you can find the best deals on plane tickets to Washington when looking for flights with evening departure times.