Cheap Flights from St. Augustine (UST) to Philadelphia (PHL)

Popular airlines from St. Augustine, FL (UST-Northeast Florida Regional) to Philadelphia Intl. Airport (PHL)

Frequently asked questions

How much does a flight from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL) cost?
Snag a cheap one-way flight or cheap return flight from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL)?
The cheapest month to fly from UST to PHL is , when demand is low. Off-peak season is generally when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL)?
You can't catch a nonstop flight from St. Augustine, FL (UST-Northeast Florida Regional) to Philadelphia Intl. Airport (PHL). However, you can seamlessly travel to Philadelphia without any layovers by departing from Jacksonville Intl. Airport (JAX).
What is the cheapest airline that flies from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL)?
To find the cheapest airline that'll fly you from UST to PHL, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL)?
There aren't any daily nonstop flights from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from UST to PHL?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL)?
Book a flight from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL) last-minute?
Last-minute bookings from UST to PHL are usually more expensive. To lock in the best rates, start searching for flights early. That being said, if you're flexible with your travel dates, you may score a cheap ticket right before you leave.
Is it cheaper to book an UST to PHL flight and hotel package?
You can save money by booking an UST to PHL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your ideal accommodations and flights, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Northeast Florida Regional Airport (UST) to Philadelphia Intl. Airport (PHL)?
Typically, you're able to reschedule or cancel your UST to PHL flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want further details, head to our Customer Service portal.

Travel information

Origin airport
Northeast Florida Regional
Destination airport
Philadelphia Intl.
Distance
766 mi

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St. Augustine to Philadelphia Flights

The cheapest times to fly from St. Augustine to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Augustine to Philadelphia are during the month of . You can find some of the cheapest flights from St. Augustine to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Augustine to Philadelphia

Sunday is one of the best days to book for cheap flights from St. Augustine to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Augustine to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Augustine to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Augustine to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Augustine to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Augustine to Philadelphia Flights

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*Available to One Key members.