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

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

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Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST) cost?
Get a cheap one-way flight or cheap return flight from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST)?
The cheapest month to fly from PHL to UST is , when demand is low. Off-peak months are generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST)?
To find the cheapest airline flying from PHL to UST, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST)?
Direct flights from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PHL to UST?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST)?
To avoid potential delays on the Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of being canceled.**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.
What airports do you fly into for St. Augustine from Philadelphia Intl. Airport (PHL)?
Jacksonville Intl. Airport (JAX) is the only airport in St. Augustine with direct flights from Philadelphia Intl. Airport (PHL). Explore the options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST) last-minute?
Last-minute fares from PHL to UST are usually more expensive. For the lowest rates, start looking for flights early. That being said, if you can play around with your travel dates, you may score a cheap ticket just before your departure.
Is it cheaper to book a PHL to UST flight and hotel package?
You can save money by securing a PHL to UST flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your preferred flights and accommodations, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Northeast Florida Regional Airport (UST)?
Typically, you're able to cancel or reschedule your PHL to UST flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

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

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Philadelphia to St. Augustine Flights

The cheapest times to fly from Philadelphia to St. Augustine

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 Philadelphia to St. Augustine are during the month of . You can find some of the cheapest flights from Philadelphia to St. Augustine with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Philadelphia to St. Augustine: 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 Philadelphia to St. Augustine

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 Philadelphia to St. Augustine 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 Philadelphia to St. Augustine 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 Philadelphia to St. Augustine 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.

 

Philadelphia to St. Augustine Flights

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*Available to One Key members.