HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Great Falls

$153+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — GTF
Apr 14 — Apr 211
Tue 4/14
Tue 4/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Great Falls with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 15, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 4/167:25 am
PHL
-
GTF
1 stop11h 01m
Alaska Airlines
Tue 4/215:06 pm
GTF
-
PHL
1 stop10h 59m
Alaska Airlines
Deal found 3/10$322
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:15 am
PHL
-
GTF
1 stop7h 12m
Delta
Wed 4/226:20 pm
GTF
-
PHL
1 stop9h 39m
Delta
Deal found 3/10$338
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:29 pm
PHL
-
GTF
2 stops12h 00m
Delta
Mon 4/206:20 pm
GTF
-
PHL
1 stop9h 39m
Delta
Deal found 3/10$344
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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 4/177:25 am
PHL
-
GTF
1 stop11h 01m
Alaska Airlines
Tue 4/215:06 pm
GTF
-
PHL
1 stop10h 59m
Alaska Airlines
Deal found 3/14$357
This Delta deal was found by Cheapflights users on 3/13. 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.
Fri 4/107:00 am
PHL
-
GTF
1 stop7h 24m
Delta
Fri 4/176:20 pm
GTF
-
PHL
1 stop9h 39m
Delta
Deal found 3/13$358
This Delta deal was found by Cheapflights users on 3/14. 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.
Thu 4/236:05 am
PHL
-
GTF
2 stops13h 35m
Delta
Sat 4/256:20 pm
GTF
-
PHL
1 stop9h 39m
Delta
Deal found 3/14$364
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 4/311:36 am
PHL
-
GTF
2 stops11h 41m
United Airlines
Tue 4/72:30 pm
GTF
-
PHL
2 stops8h 29m
United Airlines
Deal found 3/12$373
This Delta deal was found by Cheapflights users on 3/13. 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.
Thu 4/307:15 am
PHL
-
GTF
1 stop7h 12m
Delta
Sun 5/36:20 pm
GTF
-
PHL
1 stop9h 39m
Delta
Deal found 3/13$383
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Tue 3/247:25 am
PHL
-
GTF
1 stop11h 01m
Alaska Airlines
Wed 3/255:06 pm
GTF
-
PHL
1 stop10h 59m
Alaska Airlines
Deal found 3/10$388
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:25 am
PHL
-
GTF
1 stop7h 02m
Delta
Sun 6/76:20 pm
GTF
-
PHL
1 stop9h 23m
Delta
Deal found 3/10$393
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/312:26 pm
PHL
-
GTF
2 stops12h 04m
Delta
Mon 4/66:22 pm
GTF
-
PHL
1 stop9h 19m
Delta
Deal found 3/10$399

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 March 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$322
(Alaska Airlines)

One-way from

$153
(Alaska Airlines)

Popular in

December

Cheapest in

November

Average price

$278
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. 5% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 15, 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

Thu 4/16

7:25 am-4:26 pm

1 stop11h 01m

Great Falls

Mon 4/20

5:06 pm-6:05 am

1 stop10h 59m

$338

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Fri 4/3

11:36 am-9:17 pm

2 stops11h 41m

Great Falls

Tue 4/7

2:30 pm-11:43 pm

1 stop7h 13m

$344
Quickest round-trip

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Thu 4/30

7:15 am-12:27 pm

1 stop7h 12m

Great Falls

Sun 5/3

6:20 pm-5:59 am

1 stop9h 39m

$383

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Tue 3/24

7:25 am-4:26 pm

1 stop11h 01m

Great Falls

Wed 3/25

5:06 pm-6:05 am

1 stop10h 59m

$388

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Fri 4/3

12:26 pm-10:30 pm

2 stops12h 04m

Great Falls

Mon 4/6

6:22 pm-5:41 am

1 stop9h 19m

$399

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Sat 4/18

10:00 am-9:17 pm

2 stops13h 17m

Great Falls

Wed 4/22

2:30 pm-11:43 pm

1 stop7h 13m

$434
Cheapest one-way

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 4/15

7:25 am-4:26 pm

1 stop11h 01m

$153

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 4/15

8:13 pm-10:52 am

2 stops40h 39m

$184

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Mon 4/27

6:58 pm-5:35 pm

1 stop24h 37m

$262
Quickest one-way

PhiladelphiaGreat Falls

PHL - GTF

PHLGTF

Philadelphia

Wed 7/15

4:14 pm-9:34 pm

1 stop7h 20m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 14 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 March.
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, 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 October is currently the most expensive (average of $538). 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 March 15, 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
7.9
Good
8,293 reviews

Comfort

7.9

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

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
8,293 reviews
Delta
7.9
Good
8,293 reviews

Comfort

7.9

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

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
9,427 reviews
Delta
7.9
Good
8,293 reviews

Comfort

7.9

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

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 7h 12m. 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 ($263), and United Airlines ($477) offers the cheapest pricing from Philadelphia to Great Falls. Delta is priced at 50% 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 October is currently the most expensive (average of $538). 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
Shelby

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 March 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$263Average$504FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$477Average$616FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights