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$140+ Cheap flights from Flint, MI to San Antonio (FNT - 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
FNT — SAT
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Flint Bishop to San Antonio are usually found in June or July, booked 58 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap flight deals from Flint to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Flint (FNT) 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 July 30, 2025.

Round-trip from

$269
(United Airlines)

One-way from

$140
(Mytrip)

Popular in

April

Cheapest in

June

Average price

$293
From Flint Bishop to San Antonio
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One-way flight from Flint Bishop to San Antonio
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Highest demand for flights based on searches. 8% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Flint to San Antonio

Cheapest flights from Flint to San Antonio
Explore the most affordable flight options available from Flint to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This United Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 9/184:43 pmFNT - SAT
1 stop7h 15mUnited Airlines
Sun 9/216:48 amSAT - FNT
1 stop5h 37mUnited Airlines
Deal found 7/30$269
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/117:25 pmFNT - SAT
1 stop5h 17mAmerican Airlines
Tue 9/236:00 amSAT - FNT
2 stops7h 03mAmerican Airlines
Deal found 7/30$274
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/123:49 pmFNT - SAT
2 stops23h 15mMultiple Airlines
Fri 10/177:19 pmSAT - FNT
2 stops25h 31mMultiple Airlines
Deal found 7/30$388

Cheapflights Fare Finder

 
Customize your flight search to find flights from Flint 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 July 30, 2025.
Use the filters below to find and compare flights from Flint to San Antonio that are best for you.

Fly from

Flint

Fly to

San Antonio

Route

Depart

Return

Price

FlintSan Antonio

FNT - SAT

FNTSAT

Flint Bishop

Thu 9/11

7:25 pm-11:42 pm

1 stop5h 17m

San Antonio

Tue 9/23

7:00 am-2:03 pm

1 stop6h 03m

$269

FlintSan Antonio

FNT - SAT

FNTSAT

Flint Bishop

Sat 8/30

4:43 pm-11:00 pm

1 stop7h 17m

San Antonio

Fri 9/5

6:30 am-1:25 pm

1 stop5h 55m

$281

FlintSan Antonio

FNT - SAT

FNTSAT

Flint Bishop

Sun 10/12

3:49 pm-2:04 pm

2 stops23h 15m

San Antonio

Fri 10/17

7:19 pm-9:50 pm

2 stops25h 31m

$388

FlintSan Antonio

FNT - SAT

FNTSAT

Flint Bishop

Thu 8/21

9:00 am-4:48 pm

3 stops32h 48m

$140

FlintSan Antonio

FNT - SAT

FNTSAT

Flint Bishop

Thu 8/21

6:00 am-12:28 pm

1 stop7h 28m

$295

FlintSan Antonio

FNT - SAT

FNTSAT

Flint Bishop

Thu 8/21

4:43 pm-10:59 pm

1 stop7h 16m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Flint to San Antonio

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

How far ahead should I book a flight from Flint, Michigan to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from Flint to San Antonio. Price data was last updated on July 25, 2025.

The best time to book flights from Flint, Michigan to San Antonio is 57 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Flint, Michigan to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Flint, Michigan to San Antonio (average of $295). Flying from Flint, Michigan to San Antonio in March is currently the most expensive (average of $376). 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 FNT to SAT?

Find hourly flight availability from Flint 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 July 30, 2025.

One of the essential ways to save on airfare from Flint, Michigan to San Antonio is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 24% on airfare.

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 July 30, 2025.
See what other customers who have flown with United Airlines and American Airlines from Flint 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.
United Airlines
7.4
Good
8,896 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,896 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Flint 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 are the cheapest airlines flying from Flint, Michigan to San Antonio round-trip?

    Our cheapest airline available from Flint, Michigan to San Antonio is United Airlines. Our recent data shows that you can find tickets from as low as $269 on this airline. An additional option worth looking into is American Airlines, starting at $274. United Airlines is currently priced 29% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Flint 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 Flint, Michigan to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Flint, Michigan to San Antonio (average of $295). Flying from Flint, Michigan to San Antonio in March is currently the most expensive (average of $376). 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

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Top 2 airlines flying from Flint to San Antonio

Discover the top 2 airlines that operate flights from Flint 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$343FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$282Average$403FlexibilityNo cancel feeOn-time69%

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