$619 Cheap Flights from Philadelphia (PHL) to Gustavus (GST)

View $619 flight on Sun, Jun 14, 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Gustavus, AK (GST)

Cheap Flights from Philadelphia to Gustavus (PHL-GST)

Prices were available within the past 7 days and start at $619 for one-way flights and $1,393 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Mar 19 - Mon, Mar 30
PHL
Philadelphia
GST
Gustavus
$1,393 Roundtrip, found 6 days ago
$1,393
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Mar 19 from Philadelphia to Gustavus, returning Mon, Mar 30, priced at $1,393 found 6 days ago
Alaska Airlines
Thu, Mar 19 - Fri, Apr 3
PHL
Philadelphia
GST
Gustavus
$1,396 Roundtrip, found 6 days ago
$1,396
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Mar 19 from Philadelphia to Gustavus, returning Fri, Apr 3, priced at $1,396 found 6 days ago
Alaska Airlines
Fri, Mar 13 - Mon, Mar 23
PHL
Philadelphia
GST
Gustavus
$1,398 Roundtrip, found 6 days ago
$1,398
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Mar 13 from Philadelphia to Gustavus, returning Mon, Mar 23, priced at $1,398 found 6 days ago
Alaska Airlines
Sun, Mar 8 - Sun, Mar 29
PHL
Philadelphia
GST
Gustavus
$1,399 Roundtrip, found 6 days ago
$1,399
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sun, Mar 8 from Philadelphia to Gustavus, returning Sun, Mar 29, priced at $1,399 found 6 days ago
Alaska Airlines
Fri, Mar 13 - Sun, Mar 29
PHL
Philadelphia
GST
Gustavus
$1,401 Roundtrip, found 6 days ago
$1,401
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Mar 13 from Philadelphia to Gustavus, returning Sun, Mar 29, priced at $1,401 found 6 days ago
Alaska Airlines
Sat, Mar 28 - Thu, Apr 9
PHL
Philadelphia
GST
Gustavus
$1,405 Roundtrip, found 6 days ago
$1,405
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Mar 28 from Philadelphia to Gustavus, returning Thu, Apr 9, priced at $1,405 found 6 days ago
Alaska Airlines
Sat, Apr 4 - Mon, Apr 13
PHL
Philadelphia
GST
Gustavus
$1,415 Roundtrip, found 6 days ago
$1,415
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Apr 4 from Philadelphia to Gustavus, returning Mon, Apr 13, priced at $1,415 found 6 days ago
Alaska Airlines
Fri, Mar 27 - Mon, Apr 6
PHL
Philadelphia
GST
Gustavus
$1,518 Roundtrip, found 6 days ago
$1,518
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Mar 27 from Philadelphia to Gustavus, returning Mon, Apr 6, priced at $1,518 found 6 days ago
Alaska Airlines
Fri, Mar 27 - Thu, Apr 9
PHL
Philadelphia
GST
Gustavus
$1,521 Roundtrip, found 6 days ago
$1,521
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Mar 27 from Philadelphia to Gustavus, returning Thu, Apr 9, priced at $1,521 found 6 days ago
Alaska Airlines
Mon, Apr 20 - Mon, May 4
PHL
Philadelphia
GST
Gustavus
$1,523 Roundtrip, found 6 days ago
$1,523
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Apr 20 from Philadelphia to Gustavus, returning Mon, May 4, priced at $1,523 found 6 days ago
Alaska Airlines
Mon, Apr 20 - Thu, May 7
PHL
Philadelphia
GST
Gustavus
$1,526 Roundtrip, found 6 days ago
$1,526
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Apr 20 from Philadelphia to Gustavus, returning Thu, May 7, priced at $1,526 found 6 days ago
Alaska Airlines
Sat, Apr 4 - Sun, Apr 19
PHL
Philadelphia
GST
Gustavus
$1,546 Roundtrip, found 6 days ago
$1,546
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Apr 4 from Philadelphia to Gustavus, returning Sun, Apr 19, priced at $1,546 found 6 days ago
Alaska Airlines
Sun, Mar 22 - Mon, Apr 6
PHL
Philadelphia
GST
Gustavus
$1,603 Roundtrip, found 6 days ago
$1,603
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sun, Mar 22 from Philadelphia to Gustavus, returning Mon, Apr 6, priced at $1,603 found 6 days ago
Alaska Airlines
Sun, Mar 22 - Thu, Apr 9
PHL
Philadelphia
GST
Gustavus
$1,606 Roundtrip, found 6 days ago
$1,606
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sun, Mar 22 from Philadelphia to Gustavus, returning Thu, Apr 9, priced at $1,606 found 6 days ago
Alaska Airlines
Mon, Apr 13 - Mon, Apr 27
PHL
Philadelphia
GST
Gustavus
$1,608 Roundtrip, found 6 days ago
$1,608
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Apr 13 from Philadelphia to Gustavus, returning Mon, Apr 27, priced at $1,608 found 6 days ago
Alaska Airlines
Mon, Apr 13 - Thu, Apr 30
PHL
Philadelphia
GST
Gustavus
$1,611 Roundtrip, found 6 days ago
$1,611
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Apr 13 from Philadelphia to Gustavus, returning Thu, Apr 30, priced at $1,611 found 6 days ago
Alaska Airlines
Tue, Apr 14 - Wed, Apr 29
PHL
Philadelphia
GST
Gustavus
$1,643 Roundtrip, found 6 days ago
$1,643
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Apr 14 from Philadelphia to Gustavus, returning Wed, Apr 29, priced at $1,643 found 6 days ago
Hawaiian Airlines
Fri, Apr 10 - Tue, Apr 21
PHL
Philadelphia
GST
Gustavus
$1,692 Roundtrip, found 6 days ago
$1,692
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Fri, Apr 10 from Philadelphia to Gustavus, returning Tue, Apr 21, priced at $1,692 found 6 days ago

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Gustavus Airport (GST) cost?
Snag a cheap one-way flight from $619 or cheap return flight from $1,393 from Philadelphia Intl. Airport (PHL) to Gustavus Airport (GST) 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 Gustavus Airport (GST)?
Planning your trip for March is a good way to save, as it's the cheapest month for flights between PHL and GST. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Gustavus Airport (GST)?
To find the cheapest airline that'll fly you from PHL to GST, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. 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 Gustavus Airport (GST)?
There are no daily direct flights available from Philadelphia Intl. Airport (PHL) to Gustavus Airport (GST). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from PHL to GST?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary depending on various factors, including the time of year and carrier.*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 Gustavus Airport (GST)?
Select a flight from Philadelphia Intl. Airport (PHL) to Gustavus Airport (GST) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 22% more likely to be 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.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Gustavus Airport (GST) last-minute?
Booking your flight from PHL to GST shortly before your journey is typically more expensive. But if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a PHL to GST flight and hotel package?
Booking a PHL to GST flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our wide range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Gustavus Airport (GST)?
In most instances, you're able to reschedule or cancel your PHL to GST flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, head to our Customer Service portal.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Gustavus
Roundtrip price
$1,392
Distance
2894 mi

Book with confidence

Philadelphia to Gustavus Flights

The cheapest times to fly from Philadelphia to Gustavus

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

 

The best time to book a flight from Philadelphia to Gustavus

Sunday is one of the best days to book for cheap flights from Philadelphia to Gustavus: 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 Gustavus

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 Gustavus in 2025. You can also book with separate airlines for your outbound and return journeys, from $619 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 Gustavus 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 Gustavus 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 Gustavus Flights

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*Available to One Key members.