Due to multiple factors, expect to potentially pay more when booking in May. For low rates, September can be a great choice for travel to Tyler. Flights to Tyler from Washington, D.C. Reagan-National Airport in September are about $546 on average during September, but can be found for as low as $283.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Tyler as you normally would.