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

View $180 flight on Fri, Sep 4, 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
Thu, Oct 15 - Sun, Oct 18
FCA
Kalispell
SAT
San Antonio
$359 Roundtrip, found 1 hour ago
$359
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Oct 15 from Kalispell to San Antonio, returning Sun, Oct 18, priced at $359 found 1 hour ago
United
Thu, Sep 3 - Sun, Sep 6
FCA
Kalispell
SAT
San Antonio
$364 Roundtrip, found 2 days ago
$364
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 3 from Kalispell to San Antonio, returning Sun, Sep 6, priced at $364 found 2 days ago
United
Thu, Sep 10 - Sat, Sep 19
FCA
Kalispell
SAT
San Antonio
$384 Roundtrip, found 22 hours ago
$384
Roundtrip
found 22 hours ago
Select United flight, departing Thu, Sep 10 from Kalispell to San Antonio, returning Sat, Sep 19, priced at $384 found 22 hours ago
Alaska Airlines
Thu, Sep 10 - Sat, Sep 19
FCA
Kalispell
SAT
San Antonio
$389 Roundtrip, found 22 hours ago
$389
Roundtrip
found 22 hours ago
Select Alaska Airlines flight, departing Thu, Sep 10 from Kalispell to San Antonio, returning Sat, Sep 19, priced at $389 found 22 hours ago
United
Thu, Sep 17 - Sun, Sep 20
FCA
Kalispell
SAT
San Antonio
$391 Roundtrip, found 14 hours ago
$391
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Sep 17 from Kalispell to San Antonio, returning Sun, Sep 20, priced at $391 found 14 hours ago
Alaska Airlines
Tue, Feb 2 - Tue, Feb 9
FCA
Kalispell
SAT
San Antonio
$394 Roundtrip, found 13 hours ago
$394
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Tue, Feb 2 from Kalispell to San Antonio, returning Tue, Feb 9, priced at $394 found 13 hours ago
United
Thu, Sep 3 - Sun, Sep 6
FCA
Kalispell
SAT
San Antonio
$398 Roundtrip, found 2 days ago
$398
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 3 from Kalispell to San Antonio, returning Sun, Sep 6, priced at $398 found 2 days ago
Alaska Airlines
Fri, Sep 4 - Mon, Sep 7
FCA
Kalispell
SAT
San Antonio
$399 Roundtrip, found 2 days ago
$399
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Sep 4 from Kalispell to San Antonio, returning Mon, Sep 7, priced at $399 found 2 days ago
Delta
Thu, Oct 15 - Sun, Oct 18
FCA
Kalispell
SAT
San Antonio
$409 Roundtrip, found 1 hour ago
$409
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Oct 15 from Kalispell to San Antonio, returning Sun, Oct 18, priced at $409 found 1 hour ago
American Airlines
Thu, Sep 17 - Sun, Sep 20
FCA
Kalispell
SAT
San Antonio
$439 Roundtrip, found 14 hours ago
$439
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Thu, Sep 17 from Kalispell to San Antonio, returning Sun, Sep 20, priced at $439 found 14 hours ago

What you need to know for your flight from Glacier Park Intl. to San Antonio Intl.

Kalispell (FCA) to San Antonio (SAT) at a glance

Travelers can choose from a range of airlines offering flights from Kalispell (FCA) to San Antonio (SAT) on this domestic short-haul route. Compare options from various carriers to discover the best itinerary that suits your budget and schedule while you embark on your adventure to explore San Antonio's renowned attractions and neighborhoods. Get all the essential details for flights from Glacier Park International Airport to San Antonio International Airport as you plan your trip.

  • Fastest flight duration: around 4h 30m in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 1,500 miles (2,410 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $140–$515, depending on seasonality and how far ahead you book

Flights from Glacier Park International Airport (FCA) to San Antonio International Airport (SAT)

According to recent traveler bookings, here are the top airlines favored for flights from Kalispell to San Antonio, primarily offering one-stop routes. Common layovers include Denver International Airport (DEN) with an approximate 1 hour and 15-minute wait, Salt Lake City International Airport (SLC) at around 1 hour, and Dallas-Fort Worth International Airport (DFW) with a 1 hour and 30-minute layover. This selection allows you to tailor your journey by balancing price, total travel time, and cabin class for the best itinerary.

  • United: This full-service airline provides comprehensive one-stop options, with one-way fares generally falling between $165 and $540. United manages about 64% of departures on this route, featuring an in-air duration of 4 hours and 30 minutes, resulting in a total travel time of approximately 5 hours and 45 minutes, including layover.
  • Delta: As a full-service carrier, Delta offers one-stop flights with typical one-way fares ranging from $140 to $510. It operates around 27% of the departures on this route, with an in-flight time of 4 hours and 30 minutes, leading to a total journey duration of about 5 hours and 45 minutes, inclusive of layover.
  • American Airlines: This full-service airline features one-stop services, with one-way prices usually between $170 and $375. American Airlines contributes approximately 6% of departures along this route, with a flight time of 4 hours and 30 minutes and an overall travel time close to 5 hours and 45 minutes, factoring in layover.
  • Alaska Airlines: A full-service option, Alaska Airlines offers one-stop flights where one-way fares typically range from $205 to $240. It accounts for about 2% of the departures on this route, with an in-flight duration of 4 hours and 30 minutes, resulting in a total travel time of roughly 5 hours and 45 minutes, including layover.

Best time to fly from Kalispell (FCA) to San Antonio (SAT)

The most popular months for travelers flying from Kalispell to San Antonio are March, April, and August, when peak temperatures in San Antonio reach up to 86.5°F in August. If you prefer quieter travel, consider October, the least busy time to visit with temperatures around 72.5°F and typically the lowest average one-way fare (around $229). Flight availability peaks in July, August, and October, with approximately 10 flights per week, making it easier to find convenient departure times. January, February, June, and November have the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: October usually offers good deals with average one-way fare around $229, roughly 23% cheaper than the yearly average.
  • Another budget-friendly time to fly: September typically offers an average one-way fare of around $262.
  • Most flight options: July, August, and October have the highest number of flights from Kalispell to San Antonio, with approximately 10 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January53.2°F (11.8°C)Average7$356
February56.1°F (13.4°C)Average7$288
March63.7°F (17.6°C)High8$351
April70.0°F (21.1°C)High9$271
May76.3°F (24.6°C)Average8$355
June82.8°F (28.2°C)Low7$272
July85.3°F (29.6°C)Average10$352
August86.5°F (30.3°C)High10$287
September81.0°F (27.2°C)Average9$262
October72.5°F (22.5°C)Low10$229
November61.7°F (16.5°C)Low7$285
December55.6°F (13.1°C)Average9$264

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Kalispell (FCA) to San Antonio (SAT)

  • Kalispell to Austin (FCA-AUS): Austin-Bergstrom International Airport (AUS) is located approximately 67 miles from San Antonio International Airport (SAT). On this route, one-way economy tickets generally vary from $140 to $510, influenced by the season and when the booking is made. Flights on this route often feature one-stop options, with common layovers at Denver International Airport (DEN) and Salt Lake City International Airport (SLC). Main airlines operating this route include United and Delta, and first-class service is also offered.

How to find the best prices for flights from Kalispell (FCA) to San Antonio (SAT)

Getting some of the best deals on flights from Kalispell to San Antonio is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Departures in the morning (5 a.m. to 12 p.m.) tend to be less expensive, although afternoon flights (12 p.m. to 6 p.m.) are more popular. Additionally, flying on Wednesday generally offers better prices, while Friday is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at San Antonio International Airport from Glacier Park International Airport

San Antonio welcomes travelers from Kalispell with a range of transport options based on price, convenience, and proximity. Here's how to reach San Antonio efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in San Antonio, with private rides that can be arranged in advance.
  • Car rental: Renting a car from San Antonio International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Antonio International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From San Antonio International Airport, San Antonio Seaport, a seaport, is about 0.4 miles away, while San Antonio Station, a train station, is located approximately 7.5 miles from the airport.

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 October. 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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