To save up to 45% on this flight, we recommend booking at least 34 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Boise to Lehigh Valley from $467 1-2 weeks out and tickets from $586 for flights departing within the next 72 hours.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boise to Lehigh Valley as you normally would.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, July can be a great choice for travel to Lehigh Valley. Flights to Lehigh Valley from Boise in July are about $386 on average during July, but can be found for as low as $225.