Due to multiple factors, expect to potentially pay more when booking in August. For low rates, March can be a great choice for travel to Nanjing. Flights to Nanjing from Washington, D.C. Reagan-National Airport in March are about $954 on average during March, but can be found for as low as $571.
When flying from Washington, D.C. Reagan-National Airport to Nanjing, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.