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Florida Keys

$78+ Cheap flights from San Antonio (SAT) to Florida Keys

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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — EYW
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from San Antonio to Florida Keys

Keep the following information in mind while searching for San Antonio to Florida Keys flight deals. Data was last updated July 31, 2025.

Round-trip from

$196
(American Airlines)

One-way from

$78
(Southwest)

Popular in

January

Cheapest in

September

Average price

$388
From San Antonio to Florida Keys
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One-way flight from San Antonio to Florida Keys
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Highest demand for flights based on searches. 6% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 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 San Antonio to Florida Keys

Cheapest flights from San Antonio to Florida Keys
Explore the most affordable flight options available from San Antonio to Florida Keys. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

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.
Wed 10/17:00 amSAT - EYW
2 stops10h 59mAmerican Airlines
Tue 10/71:38 pmEYW - SAT
1 stop10h 15mAmerican Airlines
Deal found 7/30$196
This Delta deal was found by Cheapflights users on 7/31. 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 10/12:00 pmSAT - EYW
1 stop5h 07mDelta
Tue 10/76:17 pmEYW - SAT
1 stop7h 03mDelta
Deal found 7/31$197
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 8/185:20 amSAT - MIA
Nonstop2h 54mAmerican Airlines
Tue 8/269:40 pmMIA - SAT
Nonstop2h 56mAmerican Airlines
Deal found 7/31$214
This Delta deal was found by Cheapflights users on 7/31. 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.
Sat 8/235:45 pmSAT - MIA
1 stop5h 39mDelta
Sat 8/307:00 amMIA - SAT
1 stop9h 00mDelta
Deal found 7/31$217
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/184:55 pmSAT - MIA
1 stop5h 10mSouthwest
Sat 8/236:55 amMIA - SAT
1 stop6h 55mSouthwest
Deal found 7/29$222
This FlightHub deal was found by Cheapflights users on 7/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:59 pmSAT - MIA
1 stop10h 31mFrontier
Sat 8/236:15 amMIA - SAT
1 stop9h 20mFrontier
Deal found 7/31$245
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/37:52 pmSAT - MIA
1 stop8h 46mSpirit Airlines
Thu 8/77:00 amMIA - SAT
1 stop12h 36mSpirit Airlines
Deal found 7/28$250
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/77:52 pmSAT - MIA
1 stop8h 46mMultiple Airlines
Sun 8/176:00 amMIA - SAT
1 stop14h 13mMultiple Airlines
Deal found 7/29$254
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.
Fri 10/316:00 amSAT - EYW
2 stops12h 55mMultiple Airlines
Sun 11/28:55 amEYW - SAT
1 stop8h 00mMultiple Airlines
Deal found 7/30$419

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Florida Keys 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 31, 2025.
Use the filters below to find and compare flights from San Antonio to Florida Keys that are best for you.

Fly from

San Antonio

Fly to

Florida Keys

Route

Depart

Return

Price

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 10/1

7:00 am-6:59 pm

2 stops10h 59m

Key West

Tue 10/7

1:38 pm-10:53 pm

1 stop10h 15m

$196

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 10/1

2:00 pm-8:07 pm

1 stop5h 07m

Key West

Tue 10/7

6:17 pm-12:20 am

1 stop7h 03m

$197

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Mon 8/18

5:20 am-9:14 am

Nonstop2h 54m

Miami

Tue 8/26

9:40 pm-11:36 pm

Nonstop2h 56m

$214

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 8/23

5:45 pm-12:24 am

1 stop5h 39m

Miami

Sat 8/30

7:00 am-3:00 pm

1 stop9h 00m

$217

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Mon 8/18

4:55 pm-11:05 pm

1 stop5h 10m

Miami

Sat 8/23

6:55 am-12:50 pm

1 stop6h 55m

$222

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sun 8/10

7:52 pm-5:38 am

1 stop8h 46m

Miami

Thu 8/14

6:00 am-7:13 pm

1 stop14h 13m

$243

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 8/16

6:59 pm-6:30 am

1 stop10h 31m

Miami

Sat 8/23

6:15 am-2:35 pm

1 stop9h 20m

$245

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sun 8/3

7:52 pm-5:38 am

1 stop8h 46m

Miami

Thu 8/7

7:00 am-6:36 pm

1 stop12h 36m

$250

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Fri 10/31

6:00 am-7:55 pm

2 stops12h 55m

Key West

Sun 11/2

8:55 am-3:55 pm

1 stop8h 00m

$419

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Wed 9/17

5:35 am-4:40 pm

1 stop10h 05m

$78

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 16 results
1
2

Best time to book a flight from San Antonio to Florida Keys

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

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

Currently, August is the cheapest month in which you can book a flight from San Antonio to Florida Keys (average of $328). Flying from San Antonio to Florida Keys in March is currently the most expensive (average of $492). 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 Florida Keys

Get insights into the airlines that provide service to Florida Keys. 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 Florida Keys. Reviews last updated July 31, 2025.
Read through reviews of airlines operating flights from San Antonio to Florida Keys, such as Southwest, Delta, and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,900 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
8,049 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Florida Keys. 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 from for flights from San Antonio to Florida Keys?

    Most people fly from San Antonio (SAT) if they book a flight from San Antonio to Florida Keys. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

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

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $78. Users have also found prices from $85 and $118 on Spirit Airlines and Frontier, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Antonio to Florida Keys 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 San Antonio to Florida Keys?

    Currently, August is the cheapest month in which you can book a flight from San Antonio to Florida Keys (average of $328). Flying from San Antonio to Florida Keys in March is currently the most expensive (average of $492). 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

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Top 2 airlines flying from San Antonio to Florida Keys

Discover the top 2 airlines that operate flights from San Antonio to Florida Keys. 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$418FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$224Average$462FlexibilityNo cancel feeOn-time71%

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