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$318+ Cheap flights from Great Falls to San Antonio (GTF - SAT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SAT
Jul 14 — Jul 211
Tue 7/14
Tue 7/21
1 adult, Economy
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Cheap flight deals from Great Falls to San Antonio

Cheapest flights from Great Falls to San Antonio
Explore the most affordable flight options available from Great Falls to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2026.

This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 8/275:18 pm
GTF
-
SAT
1 stop21h 55m
Alaska Airlines
Sat 9/125:17 pm
SAT
-
GTF
1 stop24h 22m
Alaska Airlines
Deal found 6/9$318
This Delta deal was found by Cheapflights users on 6/10. 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 8/275:40 am
GTF
-
SAT
2 stops8h 17m
Delta
Sat 9/126:05 pm
SAT
-
GTF
1 stop5h 39m
Delta
Deal found 6/10$324
This Delta deal was found by Cheapflights users on 6/9. 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 11/196:20 pm
GTF
-
SAT
1 stop5h 25m
Delta
Tue 11/246:05 pm
SAT
-
GTF
1 stop5h 48m
Delta
Deal found 6/9$328
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 7/11:20 pm
GTF
-
SAT
2 stops10h 13m
Delta
Tue 7/76:30 am
SAT
-
GTF
1 stop7h 07m
Delta
Deal found 6/11$359
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 7/16:15 am
GTF
-
SAT
1 stop5h 28m
United Airlines
Tue 7/74:35 pm
SAT
-
GTF
1 stop5h 59m
United Airlines
Deal found 6/11$387

Find flight deals from Great Falls to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to San Antonio (SAT). 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 June 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$318
(Delta)

Popular in

June

Cheapest in

April

Average price

$732
Provider with most accurate pricing for Great Falls-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Great Falls-San Antonio flights.
Search Deals
From Great Falls to San Antonio
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Great Falls to San Antonio 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 June 14, 2026.
Use the filters below to find and compare flights from Great Falls to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsSan Antonio

GTF - SAT

GTFSAT

Great Falls

Thu 8/27

5:40 am-1:31 pm

1 stop6h 51m

San Antonio

Sat 9/12

6:05 pm-10:44 pm

1 stop5h 39m

$318

Great FallsSan Antonio

GTF - SAT

GTFSAT

Great Falls

Thu 8/27

5:18 pm-4:13 pm

1 stop21h 55m

San Antonio

Sat 9/12

5:17 pm-4:39 pm

1 stop24h 22m

$318

Great FallsSan Antonio

GTF - SAT

GTFSAT

Great Falls

Mon 9/14

5:40 am-1:40 pm

1 stop7h 00m

San Antonio

Sat 9/26

6:45 am-12:35 pm

1 stop6h 50m

$318
Quickest round-trip

Great FallsSan Antonio

GTF - SAT

GTFSAT

Great Falls

Thu 11/19

6:20 pm-12:45 am

1 stop5h 25m

San Antonio

Tue 11/24

6:05 pm-10:53 pm

1 stop5h 48m

$328
Cheapest one-way
Quickest one-way

Great FallsSan Antonio

GTF - SAT

GTFSAT

Great Falls

Wed 7/15

12:30 pm-10:57 pm

1 stop9h 27m

$368

Great FallsSan Antonio

GTF - SAT

GTFSAT

Great Falls

Wed 7/15

1:17 pm-11:54 pm

2 stops9h 37m

$939

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Sorted by cheapest first

Compare providers for flights from Great Falls to San Antonio

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 Great Falls to San Antonio in June.
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 Great Falls-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Great Falls-San Antonio 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 Great Falls-San Antonio 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 Great Falls to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio 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 San Antonio

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

Currently, April is the cheapest month in which you can book a flight from Great Falls to San Antonio (average of $378). Flying from Great Falls to San Antonio in June is currently the most expensive (average of $732). 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 San Antonio

Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated June 14, 2026.
See what other customers who have flown with Delta and United Airlines from Great Falls to San Antonio have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,403 reviews

Entertainment

7.8

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Crew

8.5

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
7.9
Good
8,403 reviews
Delta
7.9
Good
8,403 reviews

Entertainment

7.8

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Crew

8.5

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
9,818 reviews
Delta
7.9
Good
8,403 reviews

Entertainment

7.8

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Crew

8.5

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 Great Falls to San Antonio. 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 Great Falls to San Antonio?

    For as low as $318, Delta can have you in San Antonio from Great Falls in 6h 51m. Great Falls and San Antonio are separated by a distance of 1418 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Great Falls to San Antonio round-trip?

    Currently priced at $330, Delta will fly you from Great Falls to San Antonio and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $330. Delta is currently priced 37% below the average price you’ll pay for this route.

  • Can I find deals for flights from Great Falls to San Antonio that include hotel bookings?

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

  • How can I find direct flights from Great Falls to San Antonio?

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

  • Can I find deals for business class flights from Great Falls to San Antonio?

    Yes. Cheapflights offers flight deals from Great Falls to San Antonio 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 San Antonio?

    Currently, April is the cheapest month in which you can book a flight from Great Falls to San Antonio (average of $378). Flying from Great Falls to San Antonio in June is currently the most expensive (average of $732). 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 San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Top 2 airlines flying from Great Falls to San Antonio

Discover the top 2 airlines that operate flights from Great Falls to San Antonio. 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 June 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$330Average$671FlexibilityNo cancel feeOn-time69%
DeltaCheapest$330Average$458FlexibilityNo cancel feeOn-timeN/A

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