Florida Keys

$66+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — EYW
Mar 11 — Mar 181
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Cheap 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 February 9, 2026.

This Frontier deal was found by Cheapflights users on 2/8. 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.
Fri 2/278:22 pm
SAT
-
MIA
1 stop7h 52m
Frontier
Thu 3/56:45 am
MIA
-
SAT
1 stop13h 45m
Frontier
Deal found 2/8$210
This CheapOair deal was found by Cheapflights users on 2/6. 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.
Fri 4/106:00 pm
SAT
-
MIA
1 stop5h 49m
Frontier
Sun 4/125:50 am
MIA
-
SAT
1 stop19h 29m
Frontier
Deal found 2/6$212
This Delta deal was found by Cheapflights users on 2/8. 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.
Tue 4/216:20 am
SAT
-
MIA
1 stop6h 52m
Delta
Wed 4/292:45 pm
MIA
-
SAT
1 stop7h 45m
Delta
Deal found 2/8$217
This Delta deal was found by Cheapflights users on 2/6. 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 3/181:00 pm
SAT
-
MIA
1 stop9h 24m
Delta
Wed 3/256:00 am
MIA
-
SAT
1 stop7h 42m
Delta
Deal found 2/6$219
This Frontier deal was found by Cheapflights users on 2/7. 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.
Wed 2/256:12 pm
SAT
-
MIA
1 stop10h 02m
Frontier
Mon 3/25:05 am
MIA
-
SAT
1 stop12h 15m
Frontier
Deal found 2/7$222
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Mon 3/93:36 pm
SAT
-
MIA
1 stop20h 30m
Frontier
Tue 3/175:50 am
MIA
-
SAT
1 stop19h 27m
Frontier
Deal found 2/7$228
This Delta deal was found by Cheapflights users on 2/5. 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 8/225:30 am
SAT
-
EYW
1 stop7h 54m
Delta
Fri 8/287:00 am
EYW
-
SAT
1 stop7h 07m
Delta
Deal found 2/5$228
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Mon 3/93:36 pm
SAT
-
MIA
1 stop20h 30m
Multiple Airlines
Tue 3/173:12 pm
MIA
-
SAT
2 stops19h 15m
Multiple Airlines
Deal found 2/7$231
This Frontier deal was found by Cheapflights users on 2/7. 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 2/268:20 pm
SAT
-
MIA
1 stop7h 54m
Frontier
Wed 3/46:25 am
MIA
-
SAT
1 stop11h 50m
Frontier
Deal found 2/7$235
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 3/78:53 pm
SAT
-
MIA
2 stops13h 23m
Multiple Airlines
Tue 3/105:50 am
MIA
-
SAT
1 stop19h 27m
Multiple Airlines
Deal found 2/6$239
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 2/2110:26 am
SAT
-
MIA
2 stops13h 16m
Multiple Airlines
Sun 3/15:05 am
MIA
-
SAT
1 stop12h 14m
Multiple Airlines
Deal found 2/7$240
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 4/2510:26 am
SAT
-
EYW
1 stop23h 51m
Multiple Airlines
Thu 4/309:46 am
EYW
-
SAT
1 stop13h 43m
Multiple Airlines
Deal found 2/8$240

Find 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 February 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$210
(Frontier)

One-way from

$66
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$390
Provider with most accurate pricing for San Antonio-Miami flight deals.
Provider most trusted by Cheapflights users for San Antonio-Miami flights.
From San Antonio to Florida Keys
One-way flight from San Antonio to Florida Keys
Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 9, 2026.
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 AntonioMiami

SAT - MIA

SATMIA

San Antonio

Wed 4/22

5:20 am-12:11 pm

1 stop5h 51m

Miami

Wed 4/29

2:45 pm-9:30 pm

1 stop7h 45m

$217

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Tue 4/21

5:20 am-2:12 pm

1 stop7h 52m

Miami

Wed 4/29

8:04 am-3:49 pm

1 stop8h 45m

$217

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Wed 3/18

1:00 pm-11:24 pm

1 stop9h 24m

Miami

Wed 3/25

6:00 am-12:42 pm

1 stop7h 42m

$219

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Fri 2/27

5:04 pm-12:42 am

1 stop6h 38m

Miami

Thu 3/5

6:45 am-7:30 pm

1 stop13h 45m

$234

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Thu 3/5

10:26 am-12:06 am

2 stops12h 40m

Miami

Tue 3/10

5:50 am-12:17 am

1 stop19h 27m

$246

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 4/25

5:20 am-12:11 pm

1 stop5h 51m

Miami

Tue 4/28

8:04 am-3:49 pm

1 stop8h 45m

$248

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Wed 3/25

10:22 am-8:07 pm

2 stops8h 45m

Miami

Tue 3/31

3:12 pm-9:27 am

2 stops19h 15m

$251

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Tue 5/12

10:52 am-6:31 pm

1 stop6h 39m

Miami

Sat 5/16

6:00 am-1:32 pm

1 stop8h 32m

$269

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 2/22

8:14 pm-12:26 pm

1 stop15h 12m

Key West

Thu 2/26

9:46 am-4:15 pm

2 stops31h 29m

$277

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Fri 5/15

3:14 pm-5:05 am

1 stop12h 51m

Miami

Mon 5/18

5:50 am-2:19 pm

1 stop9h 29m

$282

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 35 results
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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, January is the cheapest month in which you can book a flight from San Antonio to Florida Keys (average of $126). Flying from San Antonio to Florida Keys in December is currently the most expensive (average of $289). 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 February 9, 2026.
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.

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

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.

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

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.

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

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.

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

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.

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

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.

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

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.

  • How long is the flight from San Antonio to Florida Keys?

    There are many flights that can get you from San Antonio to Florida Keys in 5h 51m. Fly via Delta, Frontier, or American Airlines to get the fastest option. San Antonio and Florida Keys are separated by a distance of 1140 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $54. Users have also found prices from $73 and $99 on Frontier and Southwest, 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, January is the cheapest month in which you can book a flight from San Antonio to Florida Keys (average of $126). Flying from San Antonio to Florida Keys in December is currently the most expensive (average of $289). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Antonio to Florida Keys

See prices for flight routes from nearby airports that may be better suited for you.

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 February 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$227Average$351FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$236Average$448FlexibilityNo cancel feeOn-time71%

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