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$305+ 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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — GTF
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
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 July 12, 2026.

This Delta deal was found by Cheapflights users on 7/11. 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.
Fri 11/67:20 am
PHL
-
GTF
1 stop7h 13m
Delta
Tue 11/176:20 pm
GTF
-
PHL
1 stop9h 21m
Delta
Deal found 7/11$338
This Delta deal was found by Cheapflights users on 7/11. 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.
Sat 11/77:20 am
PHL
-
GTF
1 stop7h 13m
Delta
Tue 11/171:10 pm
GTF
-
PHL
2 stops9h 41m
Delta
Deal found 7/11$344
This Delta deal was found by Cheapflights users on 7/11. 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.
Sat 11/79:40 am
PHL
-
GTF
2 stops10h 02m
Delta
Mon 11/166:20 pm
GTF
-
PHL
2 stops14h 42m
Delta
Deal found 7/11$349
This Orbitz deal was found by Cheapflights users on 7/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:00 am
PHL
-
GTF
1 stop11h 35m
Alaska Airlines
Mon 10/265:15 pm
GTF
-
PHL
1 stop10h 25m
Alaska Airlines
Deal found 7/8$373
This Travelocity deal was found by Cheapflights users on 7/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:39 pm
PHL
-
GTF
2 stops30h 00m
Alaska Airlines
Mon 9/145:19 pm
GTF
-
PHL
1 stop10h 21m
Alaska Airlines
Deal found 7/8$399
This Delta deal was found by Cheapflights users on 7/11. 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.
Sun 11/87:20 am
PHL
-
GTF
1 stop7h 13m
Delta
Tue 11/176:20 pm
GTF
-
PHL
1 stop9h 21m
Delta
Deal found 7/11$403
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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.
Mon 11/97:00 am
PHL
-
GTF
1 stop11h 17m
Alaska Airlines
Fri 11/134:57 pm
GTF
-
PHL
1 stop10h 36m
Alaska Airlines
Deal found 7/11$408
This Delta deal was found by Cheapflights users on 7/11. 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.
Sun 11/87:20 am
PHL
-
GTF
1 stop7h 13m
Delta
Sat 11/141:10 pm
GTF
-
PHL
2 stops9h 41m
Delta
Deal found 7/11$409
This Alaska Airlines deal was found by Cheapflights users on 7/8. 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 11/35:49 pm
PHL
-
GTF
1 stop24h 28m
Alaska Airlines
Sat 11/74:57 pm
GTF
-
PHL
1 stop10h 36m
Alaska Airlines
Deal found 7/8$426
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:30 am
PHL
-
GTF
2 stops13h 17m
United Airlines
Sun 11/152:39 pm
GTF
-
PHL
1 stop7h 07m
United Airlines
Deal found 7/11$429
This Alaska Airlines deal was found by Cheapflights users on 7/8. 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.
Sat 9/127:00 am
PHL
-
GTF
1 stop11h 39m
Alaska Airlines
Mon 9/215:19 pm
GTF
-
PHL
1 stop10h 21m
Alaska Airlines
Deal found 7/8$433

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 July 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$338
(Expedia)

One-way from

$305
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$612
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
One-way flight from Philadelphia to Great Falls
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 12, 2026.
Use the filters below to find and compare flights from Philadelphia to Great Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Sat 9/12

6:59 pm-4:39 pm

1 stop23h 40m

Great Falls

Mon 9/21

5:19 pm-5:40 am

1 stop10h 21m

$468

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Thu 9/10

6:59 pm-4:39 pm

1 stop23h 40m

Great Falls

Wed 9/16

5:19 pm-5:40 am

1 stop10h 21m

$471

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 9/9

4:48 pm-4:39 pm

2 stops25h 51m

Great Falls

Mon 9/14

5:19 pm-5:40 am

1 stop10h 21m

$532

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 9/8

9:35 am-10:42 pm

2 stops15h 07m

Great Falls

Mon 9/14

6:21 pm-6:05 am

1 stop9h 44m

$602
Quickest round-trip

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 9/9

3:48 pm-9:12 pm

1 stop7h 24m

Great Falls

Tue 9/15

2:25 pm-11:44 pm

1 stop7h 19m

$654

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 7/22

11:38 am-9:34 pm

2 stops11h 56m

Great Falls

Wed 7/29

12:30 pm-9:19 pm

1 stop6h 49m

$759

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Sat 8/1

6:00 am-11:46 am

1 stop7h 46m

Great Falls

Sat 8/8

6:15 am-5:31 am

1 stop21h 16m

$808
Cheapest one-way

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 8/26

8:00 am-1:29 pm

1 stop7h 29m

$312

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 7/21

8:00 am-1:41 pm

1 stop7h 41m

$392

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 7/21

5:40 am-12:37 pm

2 stops8h 57m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/11

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Great Falls flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, March is the cheapest month in which you can book a flight from Philadelphia to Great Falls (average of $283). Flying from Philadelphia to Great Falls in December is currently the most expensive (average of $1,302). 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.

How much does it cost to fly round-trip from Philadelphia to Great Falls?

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 July 12, 2026.
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
7.8
Good
8,458 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,458 reviews
Delta
7.8
Good
8,458 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,979 reviews
Delta
7.8
Good
8,458 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 15h 07m. 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 ($472) offers the cheapest pricing from Philadelphia to Great Falls. Delta is priced at 57% 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, March is the cheapest month in which you can book a flight from Philadelphia to Great Falls (average of $283). Flying from Philadelphia to Great Falls in December is currently the most expensive (average of $1,302). 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?

Book flights to Great Falls if you plan to visit one of these locations
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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 July 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$259Average$504FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$472Average$688FlexibilityNo cancel feeOn-time69%

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