What are the cheapest airlines flying from Great Falls to Sioux Falls round-trip?

Our cheapest airline available from Great Falls to Sioux Falls is United Airlines. Our recent data shows that you can find tickets from as low as $369 on this airline. An additional option worth looking into is Delta, starting at $434. United Airlines is currently priced 16% below the average price you’ll pay for this route.

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

Currently, September is the cheapest month in which you can book a flight from Great Falls to Sioux Falls (average of $334). Flying from Great Falls to Sioux Falls 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.

What is the cheapest day to fly from Great Falls to Sioux Falls?

Travelers seeking maximum savings on their Great Falls to Sioux Falls flight should consider departing on Wednesday mornings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Sioux Falls 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 Sioux Falls when rainfall is around 0.6 in.

If weather is an important factor for your trip to Sioux Falls, 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 day to fly round-trip from Great Falls to Sioux Falls?

Monday flights are generally found to be more expensive for flights from Great Falls to Sioux Falls. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sioux Falls.

What is the cheapest month to fly from Great Falls to Sioux Falls?

Due to multiple factors, expect to potentially pay more when booking in October. For low rates, September can be a great choice for travel to Sioux Falls. Flights to Sioux Falls from Great Falls in September are about $440 on average during September, but can be found for as low as $241.

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

It’s optimal to fly from Great Falls to Sioux Falls in the morning. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight at noon.

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

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

How can I find direct flights from Great Falls to Sioux Falls?

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

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

Yes. Cheapflights offers flight deals from Great Falls to Sioux 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.

$250+ Flights from Great Falls to Sioux Falls

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Cheap flight deals from Great Falls to Sioux Falls

Round-trip from	$369 (United Airlines)
One-way from	$250 (United Airlines)
Popular in	October
Cheapest in	September

From Great Falls to Sioux Falls Joe Foss Field

Search Deals

One-way flight from Great Falls to Sioux Falls Joe Foss Field

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($39 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).

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Find flight deals from Great Falls to Sioux Falls

Cheapest flights from Great Falls to Sioux Falls
Explore the most affordable flight options available from Great Falls to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Tue 8/122:35 pmGTF - FSD

1 stop7h 31mUnited Airlines

Sat 8/165:10 pmFSD - GTF

1 stop5h 03mUnited Airlines

Deal found 7/28

$369

Tue 8/126:05 amGTF - FSD

1 stop5h 10mDelta

Sat 8/164:08 pmFSD - GTF

2 stops7h 37mDelta

Deal found 7/28

$434

Best flights from Great Falls to Sioux Falls
Discover carefully curated flight deals from Great Falls to Sioux Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Tue 8/122:35 pmGTF - FSD

1 stop7h 31mUnited Airlines

Sat 8/165:10 pmFSD - GTF

1 stop5h 03mUnited Airlines

Deal found 7/28

$369

Tue 8/126:05 amGTF - FSD

1 stop5h 10mDelta

Sat 8/164:08 pmFSD - GTF

2 stops7h 37mDelta

Deal found 7/28

$434

Last-minute flights from Great Falls to Sioux Falls
Discover last-minute flight deals from Great Falls to Sioux Falls. Data last updated July 29, 2025 and is based on user searches.

Tue 8/122:35 pmGTF - FSD

1 stop7h 31mUnited Airlines

Sat 8/165:10 pmFSD - GTF

1 stop5h 03mUnited Airlines

Deal found 7/28

$369

Tue 8/126:05 amGTF - FSD

1 stop5h 10mDelta

Sat 8/164:08 pmFSD - GTF

2 stops7h 37mDelta

Deal found 7/28

$434

One-way flights from Great Falls to Sioux Falls
Search for one-way flight options from Great Falls to Sioux Falls. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Mon 9/82:35 pmGTF - FSD

1 stop4h 54mUnited Airlines

Deal found 7/29

$250

Mon 9/811:43 amGTF - FSD

2 stops11h 03mDelta

Deal found 7/29

$289

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Great FallsSioux Falls

GTF - FSD

GTFFSD

Great Falls

Tue 8/12

2:35 pm-11:06 pm

1 stop7h 31m

Sioux Falls Joe Foss Field

Sat 8/16

5:10 pm-9:13 pm

1 stop5h 03m

$369

Great FallsSioux Falls

GTF - FSD

GTFFSD

Great Falls

Tue 8/12

6:05 am-12:15 pm

1 stop5h 10m

Sioux Falls Joe Foss Field

Sat 8/16

4:08 pm-10:45 pm

2 stops7h 37m

$434

Great FallsSioux Falls

GTF - FSD

GTFFSD

Great Falls

Mon 9/8

2:35 pm-8:29 pm

1 stop4h 54m

$250

Great FallsSioux Falls

GTF - FSD

GTFFSD

Great Falls

Mon 9/8

11:43 am-11:46 pm

2 stops11h 03m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Great Falls to Sioux Falls

Have a flexible travel schedule? Discover the best time to fly to Sioux Falls 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.

Reviews of airlines servicing Sioux Falls

Read reviews from past customers who have flown Delta and United Airlines from Great Falls to Sioux Falls. 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.

Delta

8.0

Very good

7,977 reviews

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

7,977 reviews

Delta

8.0

Very good

7,977 reviews

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

8,899 reviews

Delta

8.0

Very good

7,977 reviews

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

What are the cheapest airlines flying from Great Falls to Sioux Falls round-trip?
Our cheapest airline available from Great Falls to Sioux Falls is United Airlines. Our recent data shows that you can find tickets from as low as $369 on this airline. An additional option worth looking into is Delta, starting at $434. United Airlines is currently priced 16% below the average price you’ll pay for this route.
Can I find deals for flights from Great Falls to Sioux Falls that include hotel bookings?
Yes. In addition to deals on Great Falls to Sioux Falls flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Great Falls to Sioux Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Sioux Falls.
Can I find deals for business class flights from Great Falls to Sioux Falls?
Yes. Cheapflights offers flight deals from Great Falls to Sioux 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 Great Falls to Sioux Falls?
Currently, September is the cheapest month in which you can book a flight from Great Falls to Sioux Falls (average of $334). Flying from Great Falls to Sioux Falls 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 Sioux Falls

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

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$250+ Cheap flights from Great Falls to Sioux Falls (GTF - FSD)

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Great Falls to Sioux Falls 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 Sioux Falls

Round-trip from

One-way from

Popular in

Cheapest in

Find flight deals from Great Falls to Sioux Falls

Cheapest flights from Great Falls to Sioux FallsExplore the most affordable flight options available from Great Falls to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Great Falls to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Great Falls to Sioux Falls

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

Reviews of airlines servicing Sioux Falls

Read reviews from past customers who have flown Delta and United Airlines from Great Falls to Sioux Falls. 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 Sioux Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Great Falls to Sioux Falls round-trip?

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

How can I find direct flights from Great Falls to Sioux Falls?

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

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

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 Sioux Falls

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

Top airline flying from Great Falls to Sioux Falls

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Book with Flexibility

Travel Smart

Cheapest flights from Great Falls to Sioux Falls
Explore the most affordable flight options available from Great Falls to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.