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$378+ Cheap flights from Philadelphia to Great Falls (PHL - GTF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — GTF
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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Cheap flight deals from Philadelphia to Great Falls

Cheapest flights from Philadelphia to Great Falls
Explore the most affordable flight options available from Philadelphia to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 14, 2025.

This United Airlines deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:39 amPHL - GTF
2 stops29h 00mUnited Airlines
Sat 1/32:35 pmGTF - PHL
2 stops21h 36mUnited Airlines
Deal found 12/13$1,003
This United Airlines deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:50 pmPHL - GTF
2 stops21h 49mUnited Airlines
Sun 1/42:35 pmGTF - PHL
1 stop12h 57mUnited Airlines
Deal found 12/12$1,072
This Delta deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:08 amPHL - GTF
2 stops11h 30mDelta
Sun 1/46:18 pmGTF - PHL
1 stop9h 32mDelta
Deal found 12/13$1,564

Find flight deals from Philadelphia to Great Falls

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Great Falls (GTF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$378
(Alaska Airlines)

Popular in

July

Cheapest in

November

Average price

$519
Provider with most accurate pricing for Philadelphia-Great Falls flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Great Falls flights.
Search Deals
From Philadelphia to Great Falls
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Great Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 14, 2025.
Use the filters below to find and compare flights from Philadelphia to Great Falls that are best for you.

Fly from

Philadelphia

Fly to

Great Falls

Route

Depart

Return

Price

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 2/24

6:20 pm-5:48 pm

1 stop25h 28m

Great Falls

Sat 2/28

6:28 pm-5:20 pm

1 stop20h 52m

$378

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 2/10

7:06 pm-5:19 pm

1 stop24h 13m

Great Falls

Sat 2/14

6:28 pm-5:20 pm

1 stop20h 52m

$392

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Thu 1/22

7:06 pm-5:19 pm

1 stop24h 13m

Great Falls

Mon 1/26

5:59 pm-6:03 pm

1 stop22h 04m

$412

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 2/11

3:43 pm-9:53 pm

1 stop8h 10m

Great Falls

Sat 2/14

2:25 pm-11:23 pm

1 stop6h 58m

$488

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Mon 1/26

3:43 pm-9:53 pm

1 stop8h 10m

Great Falls

Sat 1/31

6:10 am-3:50 pm

1 stop7h 40m

$488

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Thu 1/22

10:30 am-9:53 pm

2 stops13h 23m

Great Falls

Mon 1/26

2:29 pm-11:30 pm

1 stop7h 01m

$514

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 2/10

10:10 am-9:53 pm

2 stops13h 43m

Great Falls

Sat 2/14

6:25 am-5:14 pm

2 stops8h 49m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Compare providers for flights from Philadelphia to Great Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Great Falls in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Great Falls flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Great Falls flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-Great Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Great Falls flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Great Falls

What is the cheapest month to book a flight from Philadelphia to Great Falls?

Currently, September is the cheapest month in which you can book a flight from Philadelphia to Great Falls (average of $245). Flying from Philadelphia to Great Falls in February is currently the most expensive (average of $755). 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.

Reviews of airlines servicing Great Falls

Get insights into the airlines that provide service to Great Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Great Falls. Reviews last updated December 14, 2025.
Peruse reviews from past customers who have flown with Delta and United Airlines from Philadelphia to Great Falls to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,094 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Great Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Philadelphia to Great Falls?

    Departing from Philadelphia to Great Falls will take you 8h 10m. The distance from Philadelphia to Great Falls is about 1860 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Philadelphia to Great Falls round-trip?

    According to our current data, Delta ($259), and United Airlines ($486) offers the cheapest pricing from Philadelphia to Great Falls. Delta is priced at 53% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Philadelphia to Great Falls that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Great Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Great Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Great Falls.

  • Can I find deals for business class flights from Philadelphia to Great Falls?

    Yes. Cheapflights offers flight deals from Philadelphia to Great Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Great Falls?

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to Great Falls (average of $245). Flying from Philadelphia to Great Falls in February is currently the most expensive (average of $755). 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.

See more FAQs

Traveling to a place near Great Falls?

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Top 2 airlines flying from Philadelphia to Great Falls

Discover the top 2 airlines that operate flights from Philadelphia to Great Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$263Average$506FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$486Average$636FlexibilityNo cancel feeOn-time69%

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