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$54+ Cheap flights from Missouri to San Antonio (SAT)

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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SAT
Nov 11 — Nov 181
Tue 11/11
Tue 11/18
1 adult, Economy
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Cheap flight deals from Missouri to San Antonio

Keep the following information in mind while searching for Missouri to San Antonio flight deals. Data was last updated October 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$109
(Frontier)

One-way from

$54
(Frontier)

Popular in

December

Cheapest in

April

Average price

$368

Good round-trip deal

$303 or less

Good one-way deal

$183 or less
Provider with most accurate pricing for Lambert-St Louis-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-San Antonio flights.
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From Missouri to San Antonio
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One-way flight from Missouri to San Antonio
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Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Missouri to San Antonio.
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Price to beat on a one-way flight from Missouri to San Antonio.
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Find flight deals from Missouri to San Antonio

Cheapest flights from Missouri to San Antonio
Explore the most affordable flight options available from Missouri to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 12, 2025.

This Frontier deal was found by Cheapflights users on 10/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:45 pmSTL - SAT
1 stop23h 45mFrontier
Mon 11/178:25 pmSAT - STL
1 stop12h 42mFrontier
Deal found 10/10$109
This Booking.com deal was found by Cheapflights users on 10/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:45 pmSTL - SAT
1 stop23h 45mFrontier
Thu 11/1310:46 pmSAT - STL
1 stop15h 11mFrontier
Deal found 10/9$119
This Trip.com deal was found by Cheapflights users on 10/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:52 pmSTL - SAT
1 stop20h 45mFrontier
Mon 10/2710:54 amSAT - STL
1 stop8h 32mFrontier
Deal found 10/10$151
This Kiwi.com deal was found by Cheapflights users on 10/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:28 pmMCI - SAT
1 stop17h 49mFrontier
Mon 11/38:25 pmSAT - MCI
1 stop20h 54mFrontier
Deal found 10/10$182
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/88:28 pmMCI - SAT
1 stop23h 02mFrontier
Sat 11/153:12 pmSAT - MCI
1 stop28h 21mFrontier
Deal found 10/11$191
This Kiwi.com deal was found by Cheapflights users on 10/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:45 pmSTL - SAT
2 stops37h 29mFrontier
Sat 11/153:12 pmSAT - STL
1 stop17h 55mFrontier
Deal found 10/10$203
This Kiwi.com deal was found by Cheapflights users on 10/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:33 pmMCI - SAT
1 stop12h 45mFrontier
Wed 12/317:00 amSAT - MCI
1 stop12h 32mFrontier
Deal found 10/10$219
This Delta deal was found by Cheapflights users on 10/10. 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.
Fri 11/145:17 pmSTL - SAT
1 stop5h 59mDelta
Tue 11/183:00 pmSAT - STL
1 stop6h 58mDelta
Deal found 10/10$219
This Kiwi.com deal was found by Cheapflights users on 10/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:28 pmMCI - SAT
1 stop17h 49mFrontier
Fri 11/148:25 pmSAT - MCI
1 stop23h 08mFrontier
Deal found 10/10$225
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/18:40 pmSTL - SAT
1 stop23h 50mFrontier
Mon 11/38:25 pmSAT - STL
1 stop12h 42mFrontier
Deal found 10/11$226
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/18:28 pmMCI - SAT
1 stop24h 02mMultiple Airlines
Tue 11/46:45 amSAT - MCI
2 stops15h 16mMultiple Airlines
Deal found 10/11$243
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:00 amMCI - SAT
1 stop27h 04mMultiple Airlines
Sun 11/168:25 pmSAT - MCI
2 stops13h 52mMultiple Airlines
Deal found 10/12$244

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri 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 October 12, 2025.
Use the filters below to find and compare flights from Missouri to San Antonio that are best for you.

Fly from

Missouri

Fly to

San Antonio

Route

Depart

Return

Price

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 10/24

7:52 pm-4:37 pm

1 stop20h 45m

San Antonio

Mon 10/27

10:54 am-7:26 pm

1 stop8h 32m

$151

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 11/13

7:45 pm-7:30 pm

1 stop23h 45m

San Antonio

Mon 11/17

8:25 pm-9:07 am

1 stop12h 42m

$181

Kansas CitySan Antonio

MCI - SAT

MCISAT

Kansas City

Sat 11/8

8:28 pm-9:14 am

2 stops36h 46m

San Antonio

Sat 11/15

3:12 pm-7:33 pm

1 stop28h 21m

$192

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Sat 11/8

7:45 pm-9:14 am

2 stops37h 29m

San Antonio

Sat 11/15

3:12 pm-9:07 am

1 stop17h 55m

$203

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 11/14

7:02 pm-12:38 am

1 stop5h 36m

San Antonio

Mon 11/17

6:22 pm-11:44 pm

1 stop5h 22m

$219

Kansas CitySan Antonio

MCI - SAT

MCISAT

Kansas City

Sun 12/14

8:33 pm-9:18 am

1 stop12h 45m

San Antonio

Wed 12/31

7:00 am-7:32 pm

1 stop12h 32m

$219

Kansas CitySan Antonio

MCI - SAT

MCISAT

Kansas City

Sun 11/9

6:00 am-9:04 am

1 stop27h 04m

San Antonio

Sun 11/16

8:25 pm-10:17 am

2 stops13h 52m

$244

SpringfieldSan Antonio

SGF - SAT

SGFSAT

Springfield-Branson

Thu 4/9

3:10 pm-7:23 pm

1 stop4h 13m

San Antonio

Sat 4/11

2:01 pm-9:23 pm

1 stop7h 22m

$249

SpringfieldSan Antonio

SGF - SAT

SGFSAT

Springfield-Branson

Fri 12/19

7:25 pm-10:59 pm

1 stop3h 34m

San Antonio

Thu 12/25

6:00 am-11:37 am

1 stop5h 37m

$249

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 11/27

11:04 am-3:52 pm

1 stop4h 48m

San Antonio

Mon 12/1

6:13 pm-11:23 pm

1 stop5h 10m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 58 results
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Best time to book a flight from Missouri to San Antonio

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

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

Currently, October is the cheapest month in which you can book a flight from Missouri to San Antonio (average of $128). Flying from Missouri to San Antonio in December is currently the most expensive (average of $211). 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 time of day to fly from MO to SAT?

Find hourly flight availability from Missouri to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 12, 2025.

When flying from Missouri to San Antonio, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 34% versus a flight in the evening.

What is the cheapest day to fly from Missouri to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Missouri to San Antonio. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Missouri to San Antonio flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Missouri to San Antonio. 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 into for flights to San Antonio from Missouri?

    For a flight from Missouri to San Antonio, you will be flying into San Antonio. San Antonio (SAT) is just 7.6 mi from the center of the city.

  • How popular is this Missouri to San Antonio flight route?

    The Missouri to San Antonio flight path was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Missouri to San Antonio?

    Airlines like Frontier, Delta, and United Airlines fly from Missouri to San Antonio in about 4h 13m. The time it takes to get you to your destination can typically vary by up to 16h 32m. Airlines will cover a distance of 608 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Missouri to San Antonio one-way?

    $90 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $105 and $131, respectively.

  • What are the most popular routes from Missouri to San Antonio?

    While some choose either Kansas City - San Antonio or Springfield-Branson - San Antonio, Lambert-St Louis - San Antonio is the most popular route from Missouri to San Antonio.

  • What are the cheapest flights from Missouri to San Antonio?

    While on average a flight from Missouri to San Antonio is generally $306, our data shows the cheapest flight currently is $114. When looking at the most popular route, (Lambert-St Louis - San Antonio), you can expect to pay $184 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missouri 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 Missouri to San Antonio?

    Currently, October is the cheapest month in which you can book a flight from Missouri to San Antonio (average of $128). Flying from Missouri to San Antonio in December is currently the most expensive (average of $211). 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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Alternative routes for Missouri to San Antonio

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Top 6 airlines flying from Missouri to San Antonio

Discover the top 6 airlines that operate flights from Missouri 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 October 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$124Average$293FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$128Average$214FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$198Average$374FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$201Average$374FlexibilityNo cancel feeOn-time63%
Spirit AirlinesCheapest$209Average$296FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$217Average$348FlexibilityNo cancel feeOn-time69%

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