$223 Cheap Flights from Philadelphia (PHL) to Great Falls (GTF)

View $223 flight on Tue, May 13, 2025Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Great Falls, MT (GTF-Great Falls Intl.)

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Find available prices by choosing your travel dates.

Cheap Flights from Philadelphia to Great Falls (PHL-GTF)

Prices were available within the past 7 days and start at $223 for one-way flights and $434 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, May 14 - Fri, May 16
PHL
Philadelphia
GTF
Great Falls
$434 Roundtrip, found 2 days ago
$434
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, May 14 from Philadelphia to Great Falls, returning Fri, May 16, priced at $434 found 2 days ago
Delta
Tue, May 13 - Wed, May 14
PHL
Philadelphia
GTF
Great Falls
$440 Roundtrip, found 2 days ago
$440
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, May 13 from Philadelphia to Great Falls, returning Wed, May 14, priced at $440 found 2 days ago
Delta
Wed, May 14 - Wed, May 28
PHL
Philadelphia
GTF
Great Falls
$450 Roundtrip, found 2 days ago
$450
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, May 14 from Philadelphia to Great Falls, returning Wed, May 28, priced at $450 found 2 days ago
Delta
Tue, May 13 - Wed, May 28
PHL
Philadelphia
GTF
Great Falls
$456 Roundtrip, found 2 days ago
$456
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, May 13 from Philadelphia to Great Falls, returning Wed, May 28, priced at $456 found 2 days ago
Delta
Tue, May 13 - Wed, Jun 4
PHL
Philadelphia
GTF
Great Falls
$461 Roundtrip, found 2 days ago
$461
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, May 13 from Philadelphia to Great Falls, returning Wed, Jun 4, priced at $461 found 2 days ago
United
Wed, Aug 6 - Wed, Aug 13
PHL
Philadelphia
GTF
Great Falls
$466 Roundtrip, found 1 day ago
$466
Roundtrip
found 1 day ago
Select United flight, departing Wed, Aug 6 from Philadelphia to Great Falls, returning Wed, Aug 13, priced at $466 found 1 day ago
Delta
Wed, May 14 - Tue, May 27
PHL
Philadelphia
GTF
Great Falls
$470 Roundtrip, found 2 days ago
$470
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, May 14 from Philadelphia to Great Falls, returning Tue, May 27, priced at $470 found 2 days ago
Delta
Tue, Aug 26 - Tue, Sep 2
PHL
Philadelphia
GTF
Great Falls
$472 Roundtrip, found 21 hours ago
$472
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Aug 26 from Philadelphia to Great Falls, returning Tue, Sep 2, priced at $472 found 21 hours ago
Alaska Airlines
Wed, Sep 10 - Mon, Sep 15
PHL
Philadelphia
GTF
Great Falls
$495 Roundtrip, found 3 hours ago
$495
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Sep 10 from Philadelphia to Great Falls, returning Mon, Sep 15, priced at $495 found 3 hours ago
Hawaiian Airlines
Mon, Sep 29 - Fri, Oct 17
PHL
Philadelphia
GTF
Great Falls
$563 Roundtrip, found 1 day ago
$563
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Mon, Sep 29 from Philadelphia to Great Falls, returning Fri, Oct 17, priced at $563 found 1 day ago
Flights from Philadelphia (PHL) to Great Falls (GTF)
Origin airport
Philadelphia Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$434
Distance
1860 mi

Philadelphia to Great Falls Flights

The cheapest times to fly from Philadelphia to Great Falls

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

 

The best time to book a flight from Philadelphia to Great Falls

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

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 Great Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $223 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 Great Falls 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 Great Falls 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.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Great Falls Intl. Airport (GTF) cost?
Discover the latest flight deals from PHL to GTF by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PHL to GTF?
The cheapest flights from PHL to GTF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PHL to GTF?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from PHL to GTF. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Philadelphia Intl. Airport (PHL) to Great Falls Intl. Airport (GTF)?
There aren’t any daily nonstop flights available from Philadelphia Intl. Airport (PHL) to Great Falls Intl. Airport (GTF). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you’ll be cruising above the clouds before you know it.
What day of the week has the most flights from PHL to GTF?
You’ll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Great Falls Intl. Airport (GTF)?
To touch down at Great Falls Intl. Airport (GTF) on schedule, pick a flight that takes off from Philadelphia Intl. Airport (PHL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Great Falls Intl. Airport (GTF) last-minute?
Booking your plane ticket from PHL to GTF right before your trip is generally more expensive. But if there’s some wiggle room with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a PHL to GTF flight and hotel package?
Booking a PHL to GTF flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our impressive range of stays and then add activities, flights and car rentals 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 Great Falls Intl. Airport (GTF)?
If you booked your PHL to GTF flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.