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$291+ Cheap flights from Philadelphia to Great Falls (PHL - GTF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — GTF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$412
(Alaska Airlines)

One-way from

$291
(Delta)

Popular in

December

Cheapest in

January

Average price

$546
From Philadelphia to Great Falls
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One-way flight from Philadelphia to Great Falls
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Highest demand for flights based on searches. 13% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/147:11 pmPHL - GTF
1 stop24h 24mAlaska Airlines
Tue 10/216:15 pmGTF - PHL
1 stop9h 25mAlaska Airlines
Deal found 9/11$412
This Delta deal was found by Cheapflights users on 9/11. 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.
Tue 10/147:05 amPHL - GTF
1 stop7h 23mDelta
Tue 10/211:08 pmGTF - PHL
2 stops9h 44mDelta
Deal found 9/11$418
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/53:45 pmPHL - GTF
1 stop7h 26mUnited Airlines
Thu 10/97:00 amGTF - PHL
1 stop7h 00mUnited Airlines
Deal found 9/10$452
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/710:00 amPHL - GTF
1 stop29h 26mUnited Airlines
Tue 10/142:31 pmGTF - PHL
2 stops21h 45mUnited Airlines
Deal found 9/9$502
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/87:00 amPHL - GTF
1 stop12h 35mAlaska Airlines
Sat 10/116:15 pmGTF - PHL
1 stop9h 25mAlaska Airlines
Deal found 9/10$518
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/210:00 amPHL - GTF
1 stop13h 11mUnited Airlines
Tue 10/77:00 amGTF - PHL
1 stop14h 09mUnited Airlines
Deal found 9/10$519

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 September 11, 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 10/14

7:11 pm-5:35 pm

1 stop24h 24m

Great Falls

Tue 10/21

6:15 pm-5:40 am

1 stop9h 25m

$412

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Sun 10/5

3:45 pm-9:11 pm

1 stop7h 26m

Great Falls

Thu 10/9

7:00 am-4:00 pm

1 stop7h 00m

$452

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Fri 10/24

7:11 pm-5:35 pm

1 stop24h 24m

Great Falls

Sun 10/26

6:50 pm-5:42 am

1 stop8h 52m

$452

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 10/14

7:05 am-12:28 pm

1 stop7h 23m

Great Falls

Tue 10/21

1:08 pm-12:52 am

2 stops9h 44m

$492

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 10/7

10:00 am-1:26 pm

1 stop29h 26m

Great Falls

Tue 10/14

2:31 pm-2:16 pm

2 stops21h 45m

$502

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 10/8

7:00 am-5:35 pm

1 stop12h 35m

Great Falls

Sat 10/11

6:15 pm-5:40 am

1 stop9h 25m

$518

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Thu 10/2

10:00 am-9:11 pm

1 stop13h 11m

Great Falls

Tue 10/7

7:00 am-11:09 pm

1 stop14h 09m

$519

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Sat 10/4

10:00 am-9:11 pm

1 stop13h 11m

Great Falls

Thu 10/9

7:00 am-11:09 pm

1 stop14h 09m

$519

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Sun 1/4

6:05 am-5:39 pm

2 stops13h 34m

$291

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Mon 12/29

8:00 am-1:39 pm

1 stop7h 39m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 16 results
1
2

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.

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 September 11, 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
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 7h 23m. 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 ($368), and United Airlines ($486) offers the cheapest pricing from Philadelphia to Great Falls. Delta is priced at 39% 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, January is the cheapest month in which you can book a flight from Philadelphia to Great Falls (average of $367). Flying from Philadelphia to Great Falls in July is currently the most expensive (average of $574). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$368Average$507FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$486Average$616FlexibilityNo cancel feeOn-time69%

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