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

Currently, September is the cheapest month in which you can book a flight from Great Falls to South Dakota (average of $334). Flying from Great Falls to South Dakota in December is currently the most expensive (average of $446). 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.

In terms of precipitation, rainfall in South Dakota ranges from 0.6 - 3.9 inches per month. June is typically the wettest month, when rainfall can reach 3.9 in. January is typically the driest time to visit South Dakota when rainfall is around 0.6 in.

If weather is an important factor for your trip to South Dakota, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

What is the cheapest month to fly from Great Falls to South Dakota?

September is one of the best times of the year to fly to South Dakota from Great Falls. Prices for September average $442 per person but you can even find prices for as low as $241. The most expensive prices can be found in the month of October. Opting for a September flight can save you 49% on your journey compared to booking in October

What is the cheapest time of day to fly from GTF to SD?

When flying from Great Falls to South Dakota, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Great Falls to South Dakota?

For a flight from Great Falls to South Dakota, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city.

Can I find deals for flights from Great Falls to South Dakota that include hotel bookings?

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

How can I find direct flights from Great Falls to South Dakota?

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

Can I find deals for business class flights from Great Falls to South Dakota?

Yes. Cheapflights offers flight deals from Great Falls to South Dakota by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$264+ Cheap Flights from Great Falls to South Dakota

Q: How much does it cost to fly round-trip from Great Falls to South Dakota?

Airfare is above average for this route at the moment. Great Falls to South Dakota flights typically cost between $378 and $397 in September. The cheapest round-trip price found within the last 3 days was $502 on United Airlines (Sep 22-Sep 29).

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Cheap flight deals from Great Falls to South Dakota

Round-trip from	$502 (United Airlines)
One-way from	$264 (United Airlines)
Popular in	October
Cheapest in	September
Average price	$387

From Great Falls to South Dakota

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One-way flight from Great Falls to South Dakota

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Highest demand for flights based on searches. 7% potential increase in price ($37 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Cheapest flights from Great Falls to South Dakota
Explore the most affordable flight options available from Great Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Tue 8/197:00 amGTF - FSD

1 stop4h 45mUnited Airlines

Thu 8/289:15 amFSD - GTF

1 stop5h 22mUnited Airlines

Deal found 8/12

$414

Mon 9/227:00 amGTF - FSD

1 stop4h 45mUnited Airlines

Mon 9/299:30 amFSD - GTF

1 stop4h 56mUnited Airlines

Deal found 8/13

$502

Tue 8/1911:43 amGTF - FSD

2 stops11h 03mDelta

Thu 8/282:30 pmFSD - GTF

1 stop7h 04mDelta

Deal found 8/13

$618

Best flights from Great Falls to South Dakota
Discover carefully curated flight deals from Great Falls to South Dakota that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Mon 9/227:00 amGTF - FSD

1 stop4h 45mUnited Airlines

Mon 9/299:30 amFSD - GTF

1 stop4h 56mUnited Airlines

Deal found 8/13

$502

Last-minute flights from Great Falls to South Dakota
Discover last-minute flight deals from Great Falls to South Dakota. Data last updated August 14, 2025 and is based on user searches.

Tue 8/197:00 amGTF - FSD

1 stop4h 45mUnited Airlines

Thu 8/289:15 amFSD - GTF

1 stop5h 22mUnited Airlines

Deal found 8/12

$414

Tue 8/1911:43 amGTF - FSD

2 stops11h 03mDelta

Thu 8/282:30 pmFSD - GTF

1 stop7h 04mDelta

Deal found 8/13

$618

Mon 9/227:00 amGTF - FSD

1 stop4h 45mUnited Airlines

Mon 9/299:30 amFSD - GTF

1 stop4h 56mUnited Airlines

Deal found 8/13

$502

One-way flights from Great Falls to South Dakota
Search for one-way flight options from Great Falls to South Dakota. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Mon 12/292:25 pmGTF - FSD

1 stop4h 44mUnited Airlines

Deal found 8/14

$264

Cheapflights Fare Finder

Use the filters below to find and compare flights from Great Falls to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Great FallsSioux Falls

GTF - FSD

GTFFSD

Great Falls

Mon 9/22

7:00 am-12:45 pm

1 stop4h 45m

Sioux Falls Joe Foss Field

Mon 9/29

9:30 am-1:26 pm

1 stop4h 56m

$502

Great FallsSioux Falls

GTF - FSD

GTFFSD

Great Falls

Mon 12/29

2:25 pm-8:09 pm

1 stop4h 44m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Best time to book a flight from Great Falls to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota 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 South Dakota

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

Reviews of airlines servicing South Dakota

See what other customers who have flown with United Airlines from Great Falls to South Dakota have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,916 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,916 reviews

United Airlines

7.4

Good

8,916 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

What airport do you fly from for flights from Great Falls to South Dakota?
For a flight from Great Falls to South Dakota, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city.
Can I find deals for flights from Great Falls to South Dakota that include hotel bookings?
Yes. In addition to deals on Great Falls to South Dakota flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Great Falls to South Dakota?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to South Dakota.
Can I find deals for business class flights from Great Falls to South Dakota?
Yes. Cheapflights offers flight deals from Great Falls to South Dakota 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 South Dakota?
Currently, September is the cheapest month in which you can book a flight from Great Falls to South Dakota (average of $334). Flying from Great Falls to South Dakota in December is currently the most expensive (average of $446). 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Great Falls to South Dakota

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$238	Average$384	FlexibilityNo cancel fee	On-time69%

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$264+ Cheap flights from Great Falls (GTF) to South Dakota

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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Great Falls to South Dakota with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Great Falls to South Dakota

Keep the following information in mind while searching for Great Falls to South Dakota flight deals. Data was last updated August 14, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Great Falls to South Dakota

Cheapest flights from Great Falls to South DakotaExplore the most affordable flight options available from Great Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Great Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Great Falls to South Dakota that are best for you.

Best time to book a flight from Great Falls to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota from Great Falls with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Great Falls to South Dakota

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

Reviews of airlines servicing South Dakota

See what other customers who have flown with United Airlines from Great Falls to South Dakota have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What airport do you fly from for flights from Great Falls to South Dakota?

Can I find deals for flights from Great Falls to South Dakota that include hotel bookings?

How can I find direct flights from Great Falls to South Dakota?

Can I find deals for business class flights from Great Falls to South Dakota?

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

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.

Alternative routes for Great Falls to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Great Falls to South Dakota

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Book with Flexibility

Travel Smart

Cheapest flights from Great Falls to South Dakota
Explore the most affordable flight options available from Great Falls to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.