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$439+ Cheap flights from Great Falls to Philadelphia (GTF - PHL)

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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — PHL
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheap flight deals from Great Falls to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Philadelphia (PHL). 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 August 7, 2025.

Round-trip from

$439
(Alaska Airlines)

Popular in

October

Cheapest in

September

Average price

$670
From Great Falls to Philadelphia
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($227 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($93 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Great Falls to Philadelphia

Cheapest flights from Great Falls to Philadelphia
Explore the most affordable flight options available from Great Falls to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/194:29 pmGTF - PHL
1 stop11h 33mAlaska Airlines
Fri 9/266:57 pmPHL - GTF
1 stop22h 52mAlaska Airlines
Deal found 8/6$439
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Fri 9/192:35 pmGTF - PHL
2 stops19h 21mUnited Airlines
Fri 9/266:42 pmPHL - GTF
2 stops20h 44mUnited Airlines
Deal found 8/6$558
This Delta deal was found by Cheapflights users on 8/5. 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.
Fri 9/191:05 pmGTF - PHL
2 stops9h 49mDelta
Fri 9/267:00 amPHL - GTF
1 stop7h 25mDelta
Deal found 8/5$574
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Thu 8/212:35 pmGTF - PHL
2 stops21h 42mUnited Airlines
Mon 8/258:00 amPHL - GTF
1 stop15h 28mUnited Airlines
Deal found 8/6$605
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Wed 8/132:35 pmGTF - PHL
1 stop6h 44mUnited Airlines
Thu 8/143:39 pmPHL - GTF
1 stop7h 34mUnited Airlines
Deal found 8/5$942
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Thu 8/76:25 amGTF - PHL
1 stop7h 39mUnited Airlines
Tue 8/123:39 pmPHL - GTF
1 stop23h 57mUnited Airlines
Deal found 8/5$966

Cheapflights Fare Finder

 
Customize your flight search to find flights from Great Falls to Philadelphia 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 August 7, 2025.
Use the filters below to find and compare flights from Great Falls to Philadelphia that are best for you.

Fly from

Great Falls

Fly to

Philadelphia

Route

Depart

Return

Price

Great FallsPhiladelphia

GTF - PHL

GTFPHL

Great Falls

Fri 9/19

4:29 pm-6:02 am

1 stop11h 33m

Philadelphia

Fri 9/26

6:57 pm-3:49 pm

1 stop22h 52m

$439

Great FallsPhiladelphia

GTF - PHL

GTFPHL

Great Falls

Fri 9/19

2:35 pm-11:56 am

2 stops19h 21m

Philadelphia

Fri 9/26

6:42 pm-1:26 pm

2 stops20h 44m

$558

Great FallsPhiladelphia

GTF - PHL

GTFPHL

Great Falls

Fri 9/19

1:05 pm-12:54 am

2 stops9h 49m

Philadelphia

Fri 9/26

7:00 am-12:25 pm

1 stop7h 25m

$574

Great FallsPhiladelphia

GTF - PHL

GTFPHL

Great Falls

Thu 8/21

2:35 pm-2:17 pm

2 stops21h 42m

Philadelphia

Mon 8/25

8:00 am-9:28 pm

1 stop15h 28m

$605

Great FallsPhiladelphia

GTF - PHL

GTFPHL

Great Falls

Wed 8/13

2:35 pm-11:19 pm

1 stop6h 44m

Philadelphia

Thu 8/14

3:39 pm-9:13 pm

1 stop7h 34m

$942

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Best time to book a flight from Great Falls to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Great Falls 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 Great Falls to Philadelphia

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

Currently, August is the cheapest month in which you can book a flight from Great Falls to Philadelphia (average of $236). Flying from Great Falls to Philadelphia in March is currently the most expensive (average of $295). 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 Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated August 7, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United Airlines from Great Falls to Philadelphia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Delta
8.0
Very good
7,987 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

Related info for your journey

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

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

    Alaska Airlines, at $439, was found to be the cheapest airline from Great Falls to Philadelphia. An alternate airline flying to your destination would be United Airlines. Alaska Airlines is 42% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Great Falls to Philadelphia 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 Great Falls to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Great Falls to Philadelphia (average of $236). Flying from Great Falls to Philadelphia in March is currently the most expensive (average of $295). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Pottstown
Cherry Hill
Ocean City
Chester
Reading
Millville
Ephrata
Camden
Dewey Beach
Dover
Elkton
Essington
Willow Grove
Newark
Exton
Glen Mills
Springfield

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Great Falls to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Great Falls to Philadelphia

Discover the top airline that operate flights from Great Falls to Philadelphia. 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 August 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$576Average$697FlexibilityNo cancel feeOn-time69%

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