$180 Cheap Flights from Kalispell (FCA) to San Antonio (SAT)

View $180 flight on Wed, May 27, 2026Opens in a new window

Popular airlines from Glacier Park Intl. Airport (FCA) to San Antonio International Airport (SAT)

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Cheap Flights from Kalispell to San Antonio (FCA-SAT)

Prices were available within the past 7 days and start at $180 for one-way flights and $359 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, May 22 - Sat, May 30
FCA
Kalispell
SAT
San Antonio
$359 Roundtrip, found 13 hours ago
$359
Roundtrip
found 13 hours ago
Select Delta flight, departing Fri, May 22 from Kalispell to San Antonio, returning Sat, May 30, priced at $359 found 13 hours ago
United
Thu, Jun 18 - Wed, Aug 12
FCA
Kalispell
SAT
San Antonio
$359 Roundtrip, found 16 hours ago
$359
Roundtrip
found 16 hours ago
Select United flight, departing Thu, Jun 18 from Kalispell to San Antonio, returning Wed, Aug 12, priced at $359 found 16 hours ago
Alaska Airlines
Wed, Sep 23 - Sat, Sep 26
FCA
Kalispell
SAT
San Antonio
$359 Roundtrip, found 6 days ago
$359
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Sep 23 from Kalispell to San Antonio, returning Sat, Sep 26, priced at $359 found 6 days ago
Delta
Sat, May 2 - Sat, May 9
FCA
Kalispell
SAT
San Antonio
$364 Roundtrip, found 16 hours ago
$364
Roundtrip
found 16 hours ago
Select Delta flight, departing Sat, May 2 from Kalispell to San Antonio, returning Sat, May 9, priced at $364 found 16 hours ago
United
Thu, Jun 4 - Sun, Jun 7
FCA
Kalispell
SAT
San Antonio
$364 Roundtrip, found 2 days ago
$364
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jun 4 from Kalispell to San Antonio, returning Sun, Jun 7, priced at $364 found 2 days ago
American Airlines
Fri, May 22 - Sat, May 30
FCA
Kalispell
SAT
San Antonio
$379 Roundtrip, found 13 hours ago
$379
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Fri, May 22 from Kalispell to San Antonio, returning Sat, May 30, priced at $379 found 13 hours ago
United
Tue, Jun 30 - Sun, Jul 12
FCA
Kalispell
SAT
San Antonio
$379 Roundtrip, found 16 hours ago
$379
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Jun 30 from Kalispell to San Antonio, returning Sun, Jul 12, priced at $379 found 16 hours ago
United
Tue, Jun 2 - Wed, Jun 3
FCA
Kalispell
SAT
San Antonio
$383 Roundtrip, found 5 days ago
$383
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jun 2 from Kalispell to San Antonio, returning Wed, Jun 3, priced at $383 found 5 days ago
United
Wed, May 6 - Sat, May 9
FCA
Kalispell
SAT
San Antonio
$385 Roundtrip, found 16 hours ago
$385
Roundtrip
found 16 hours ago
Select United flight, departing Wed, May 6 from Kalispell to San Antonio, returning Sat, May 9, priced at $385 found 16 hours ago
American Airlines
Fri, May 22 - Sat, May 30
FCA
Kalispell
SAT
San Antonio
$389 Roundtrip, found 13 hours ago
$389
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Fri, May 22 from Kalispell to San Antonio, returning Sat, May 30, priced at $389 found 13 hours ago

Frequently asked questions

How much does a flight from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) cost?
You can find cheap one-way flights from $180 and cheap return flights from $359 Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) with Expedia. One-way flights usually range from $237 to $1495, and return flights typically cost between $384 and $1729. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
January is the cheapest month to fly from Kalispell, MT (FCA) to San Antonio, TX (SAT), with average return fares around $366. This price is about 23% lower than the average for the year, as January typically has lower travel demand after the holiday season. Other budget-friendly months include June and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
Enter FCA to SAT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
American Airlines is one of the cheapest airlines offering connecting flights from Kalispell, MT (FCA) to San Antonio, TX (SAT), with round-trip tickets starting from around $610. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
To find a cheap flight from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
For flights from Kalispell, MT (FCA) to San Antonio, TX (SAT), January and September are the best months to travel. You can find return flights at around $366, making these months both affordable and enjoyable. January offers winter activities in Kalispell, while September provides warm weather in San Antonio.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from FCA to SAT. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
For flights from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.), the most popular departure times are in the early morning, from 6am to 9am. About 52% of passengers prefer this time window. Major carriers like United Airlines and Alaska Airlines offer flights during this window. This timing works well because it allows you to arrive in San Antonio with a full day ahead of you.
How long does it take to fly from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
A flight from FCA to SAT with a layover takes around 5 hours 30 minutes, with the route covering approximately 1,543 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
You can fly first class between FCA and SAT. First class cabins are available on:

  • Delta Air Lines
  • American Airlines
  • United Airlines

How do I earn miles on a Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight with Expedia?
It's easy to earn miles on a Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Antonio from Glacier Park Intl. (FCA)?
If you're planning to travel to San Antonio from Glacier Park Intl. (FCA), you can fly into San Antonio Intl. (SAT) Some flights may connect through major hubs like Denver Intl. (DEN), Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA) before reaching San Antonio. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) at the last minute?
Typically, booking a last minute flight from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight and hotel package?
Securing a Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) San Antonio Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
If you booked your Kalispell, MT (FCA-Glacier Park Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Glacier Park Intl.
Destination airport
San Antonio Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$358
Distance
1543 mi

Book with confidence

Kalispell to San Antonio Flights

The cheapest times to fly from Kalispell to San Antonio

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 Kalispell to San Antonio are during the month of May. You can find some of the cheapest flights from Kalispell to San Antonio with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kalispell to San Antonio

Sunday is one of the best days to book for cheap flights from Kalispell to San Antonio: 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 Kalispell to San Antonio

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 Kalispell to San Antonio in 2026. You can also book with separate airlines for your outbound and return journeys, from $180 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 Kalispell to San Antonio 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 Kalispell to San Antonio 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.

 

Kalispell to San Antonio Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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