Cheap flights from St. Augustine to Philadelphia (UST - PHL)
Find cheap flights from St. Augustine to Philadelphia with Cheapflights
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Best time to book a flight from St. Augustine to Philadelphia
Have a flexible travel schedule? Discover the best time to fly to Philadelphia from St. Augustine with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from St. Augustine to Philadelphia
What is the cheapest month to book a flight from St. Augustine to Philadelphia?
Currently, August is the cheapest month in which you can book a flight from St. Augustine to Philadelphia (average of $236). Flying from St. Augustine to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from UST to PHL?
Find hourly flight availability from St. Augustine to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.
Unlike at noon, when flights are generally more expensive, you can save up to 83% on flights from St. Augustine to Philadelphia by exploring options for tickets in the evening.
What is the cheapest day to fly from St. Augustine to Philadelphia?
Use this chart to determine the cheapest time to fly round-trip from St. Augustine to Philadelphia. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their St. Augustine to Philadelphia flight should consider departing on Tuesday evenings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.