To save up to 11% on this flight, we recommend booking at least 28 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Lehigh Valley to Washington Dulles Intl from $252 1-2 weeks out and tickets from $276 for flights departing within the next 72 hours.
Our data shows that February tends to be the cheapest month to fly to Washington Dulles Intl from Lehigh Valley. Users have commonly found prices around $243 for the month, but tickets can be as low as $119. Due to multiple factors, prepare for potentially higher prices in December.