When flying from Washington Reagan-National Airport to Allentown, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Travelers have found it’s best to book a flight 41 days in advance to save up to 110% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 41 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Washington Reagan-National Airport to Allentown 1-2 weeks in advance for as low as $233, or $329 for flights within the next 24 hours.
Due to multiple factors, expect to potentially pay more when booking in September. For low rates, April can be a great choice for travel to Allentown. Flights to Allentown from Washington Reagan-National Airport in April are about $170 on average during April, but can be found for as low as $108.