$289 Cheap Flights from Harrisburg (MDT) to Great Falls (GTF)

View $289 flight on Sat, Dec 6, 2025Opens in a new window

Popular airlines from Harrisburg Intl. Airport (MDT) to Great Falls, MT (GTF-Great Falls Intl.)

Cheap Flights from Harrisburg to Great Falls (MDT-GTF)

Prices were available within the past 7 days and start at $289 for one-way flights and $289 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Nov 5 - Mon, Nov 17
MDT
Harrisburg
GTF
Great Falls
$289 Roundtrip, found 1 day ago
$289
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Nov 5 from Harrisburg to Great Falls, returning Mon, Nov 17, priced at $289 found 1 day ago
Delta
Wed, Oct 29 - Tue, Nov 11
MDT
Harrisburg
GTF
Great Falls
$314 Roundtrip, found 1 day ago
$314
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Oct 29 from Harrisburg to Great Falls, returning Tue, Nov 11, priced at $314 found 1 day ago
Delta
Fri, Oct 31 - Tue, Nov 11
MDT
Harrisburg
GTF
Great Falls
$334 Roundtrip, found 5 days ago
$334
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Oct 31 from Harrisburg to Great Falls, returning Tue, Nov 11, priced at $334 found 5 days ago
Delta
Tue, Nov 4 - Tue, Nov 11
MDT
Harrisburg
GTF
Great Falls
$344 Roundtrip, found 1 day ago
$344
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Nov 4 from Harrisburg to Great Falls, returning Tue, Nov 11, priced at $344 found 1 day ago
Delta
Wed, Oct 29 - Mon, Nov 10
MDT
Harrisburg
GTF
Great Falls
$364 Roundtrip, found 5 days ago
$364
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 29 from Harrisburg to Great Falls, returning Mon, Nov 10, priced at $364 found 5 days ago
Delta
Wed, Nov 5 - Mon, Nov 10
MDT
Harrisburg
GTF
Great Falls
$374 Roundtrip, found 4 days ago
$374
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Nov 5 from Harrisburg to Great Falls, returning Mon, Nov 10, priced at $374 found 4 days ago
Delta
Fri, Oct 31 - Mon, Nov 10
MDT
Harrisburg
GTF
Great Falls
$389 Roundtrip, found 5 days ago
$389
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Oct 31 from Harrisburg to Great Falls, returning Mon, Nov 10, priced at $389 found 5 days ago
Delta
Thu, Oct 30 - Tue, Nov 11
MDT
Harrisburg
GTF
Great Falls
$394 Roundtrip, found 5 days ago
$394
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Oct 30 from Harrisburg to Great Falls, returning Tue, Nov 11, priced at $394 found 5 days ago
United
Wed, Oct 22 - Sat, Oct 25
MDT
Harrisburg
GTF
Great Falls
$419 Roundtrip, found 10 hours ago
$419
Roundtrip
found 10 hours ago
Select United flight, departing Wed, Oct 22 from Harrisburg to Great Falls, returning Sat, Oct 25, priced at $419 found 10 hours ago
Alaska Airlines
Tue, Dec 9 - Wed, Dec 10
MDT
Harrisburg
GTF
Great Falls
$547 Roundtrip, found 1 day ago
$547
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Harrisburg to Great Falls, returning Wed, Dec 10, priced at $547 found 1 day ago

Alternative airports near Great Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Great Falls Intl. GTF. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $602
GTF
Great Falls Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $602

Frequently asked questions

How much does a flight from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF) cost?
Lock in a cheap one-way flight from $289 or cheap return flight from $289 from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF)?
November is the most affordable month to fly from MDT to GTF. Timing your trip outside of the busy season is often the key to better flight prices.
What is the cheapest airline that flies from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF)?
To find the cheapest airline that'll fly you from MDT to GTF, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF)?
Nonstop flights from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from MDT to GTF?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF)?
To touch down at Great Falls Intl. Airport (GTF) on schedule, opt for a flight that leaves Harrisburg Intl. Airport (MDT) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF) last-minute?
Last-minute bookings from MDT to GTF are generally more expensive. To secure the best rates, start searching for flights as early as possible. That said, if your travel plans are flexible, you may find a cheap fare right before your trip.
Is it cheaper to book a MDT to GTF flight and hotel package?
Securing a MDT to GTF flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our extensive range of stays and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Harrisburg Intl. Airport (MDT) to Great Falls Intl. Airport (GTF)?
In most cases, you can cancel or modify your MDT to GTF flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need further information, go to our Customer Service portal.

Travel information

Origin airport
Harrisburg Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$288
Distance
1779 mi

Book with confidence

Harrisburg to Great Falls Flights

The cheapest times to fly from Harrisburg to Great Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Harrisburg to Great Falls are during the month of November. You can find some of the cheapest flights from Harrisburg to Great Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Harrisburg to Great Falls

Sunday is one of the best days to book for cheap flights from Harrisburg to Great Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Harrisburg to Great Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Harrisburg to Great Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $289 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Harrisburg to Great Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Harrisburg to Great Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Harrisburg to Great Falls Flights

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*Available to One Key members.