210 - 301 USD
In general when looking for the cheapest flight to Washington, try to book your flight during the month of December for the best deal.
On average, from most locations, when planning your trip to Washington, try to book your flight in the region of 60 days in advance for the cheapest prices.
From most locations, the cheapest day to fly to Washington is Friday. Most users found that departing on a Monday was most expensive.
Generally, when visiting Washington, evening flights represent the best value. morning flights are likely to have higher prices.