How many flights depart from San Antonio to Florida Keys on average per week?

As of November 2025, there are 14 flights per week flying from San Antonio to Florida Keys. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

What is the cheapest airline that flies from San Antonio to Florida Keys?

Frontier, Southwest, and Spirit Airlines are the most popular carriers operating from San Antonio to Florida Keys

What airlines fly to Florida Keys?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Florida Keys from San Antonio according to our data. American Airlines is the first choice among our users, with 75% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 3 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from San Antonio Airport to Florida Keys?

Prices for flights from San Antonio Airport to Florida Keys are updated daily.

How many operators does momondo search for flights from San Antonio Airport to Florida Keys?

As of November 2025, there are 6 operators available to choose from for flights from San Antonio Airport to Florida Keys.

How old do you have to be to fly from San Antonio Airport to Florida Keys?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Florida Keys.

What documentation or ID do you need to fly to Florida Keys?

The travel and health documents required for your trip to Florida Keys can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Florida Keys. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$55 Cheap Flights from San Antonio to Florida Keys in 2025/26

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Cheap round-trip flights

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5:46 pm - 10:48 amSAT-MIA

16h 02m1 stop

7:09 pm - 7:55 amMIA-SAT

37h 46m2 stops

$176Frontier

Find Deal

Sun, Dec 7 - Fri, Dec 12

5:10 am - 8:58 amSAT-MIA

2h 48mnonstop

9:31 pm - 11:59 pmMIA-SAT

3h 28mnonstop

$179American Airlines

Find Deal

Sat, Jan 17 - Sat, Jan 24

5:46 pm - 12:46 amSAT-MIA

6h 00m1 stop

12:00 pm - 6:59 pmMIA-SAT

31h 59m2 stops

$191Multiple Airlines

Find Deal

Sun, Dec 7 - Tue, Dec 9

5:46 pm - 12:46 amSAT-MIA

6h 00m1 stop

7:05 am - 5:05 pmMIA-SAT

35h 00m2 stops

$197Multiple Airlines

Find Deal

Sun, Dec 7 - Mon, Dec 15

12:25 pm - 11:20 pmSAT-MIA

9h 55m1 stop

8:15 am - 3:22 pmMIA-SAT

8h 07m1 stop

$217Delta

Find Deal

Sat, Jan 17 - Sat, Jan 24

7:00 am - 8:54 pmSAT-MIA

12h 54m2 stops

6:05 am - 11:26 pmMIA-SAT

18h 21m2 stops

$237Spirit Airlines

Find Deal

Sat, Dec 6 - Fri, Dec 12

5:40 am - 8:54 pmSAT-MIA

14h 14m2 stops

5:05 am - 6:59 pmMIA-SAT

14h 54m2 stops

$239Spirit Airlines

Find Deal

Fri, Dec 5 - Sat, Dec 6

12:15 pm - 9:02 pmSAT-MIA

7h 47m1 stop

6:00 am - 10:40 amMIA-SAT

5h 40m1 stop

$258Delta

Find Deal

Thu, Feb 19 - Sat, Feb 28

7:00 am - 5:54 pmSAT-EYW

9h 54m1 stop

4:53 pm - 10:33 pmEYW-SAT

6h 40m1 stop

$330United Airlines

Find Deal

Tue, Mar 3 - Sat, Mar 7

7:05 am - 4:29 pmSAT-EYW

8h 24m1 stop

4:15 pm - 3:46 pmEYW-SAT

24h 31m3 stops

$484United Airlines

Find Deal

Mon, Jan 5 - Fri, Jan 9

Frontier flights from San Antonio to Florida Keys

Our best Frontier deals on San Antonio to Florida Keys flight tickets

Frontier

Dec 7

SAT5:46 pmSan Antonio

16h 02m

1 stop

MIA10:48 amMiami

Dec 12

MIA7:09 pmMiami

37h 46m

2 stops

SAT7:55 amSan Antonio

$176

Find similar

Frontier

Nov 8

SAT3:12 pmSan Antonio

14h 07m

1 stop

MIA6:19 amMiami

Nov 15

MIA6:00 amMiami

9h 17m

1 stop

SAT2:17 pmSan Antonio

$178

Find similar

Frontier

Jan 15

SAT7:56 pmSan Antonio

8h 18m

1 stop

MIA5:14 amMiami

Jan 18

MIA6:25 amMiami

13h 34m

1 stop

SAT6:59 pmSan Antonio

$206

Find similar

American Airlines flights from San Antonio to Florida Keys

Our best American Airlines deals on San Antonio to Florida Keys flight tickets

American Airlines

Jan 17

SAT5:10 amSan Antonio

2h 48m

MIA8:58 amMiami

Jan 24

MIA9:31 pmMiami

3h 28m

SAT11:59 pmSan Antonio

$179

Find similar

American Airlines

Dec 7

SAT5:20 amSan Antonio

2h 49m

MIA9:09 amMiami

Dec 13

MIA9:40 pmMiami

3h 19m

SAT11:59 pmSan Antonio

$205

Find similar

American Airlines

Dec 4

SAT11:53 amSan Antonio

8h 52m

1 stop

EYW9:45 pmKey West

Dec 10

EYW6:33 pmKey West

6h 52m

1 stop

SAT12:25 amSan Antonio

$225

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sun 12/7

5:46 pm-10:48 am

1 stop16h 02m

Miami

Fri 12/12

7:09 pm-7:55 am

2 stops37h 46m

$176

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 1/17

5:10 am-8:58 am

Nonstop2h 48m

Miami

Sat 1/24

9:31 pm-11:59 pm

Nonstop3h 28m

$179

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sun 12/7

5:46 pm-12:46 am

1 stop6h 00m

Miami

Tue 12/9

12:00 pm-6:59 pm

2 stops31h 59m

$191

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sun 12/7

5:46 pm-12:46 am

1 stop6h 00m

Miami

Mon 12/15

7:05 am-5:05 pm

2 stops35h 00m

$197

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 1/17

12:25 pm-11:20 pm

1 stop9h 55m

Miami

Sat 1/24

8:15 am-3:22 pm

1 stop8h 07m

$217

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 12/6

7:00 am-8:54 pm

2 stops12h 54m

Miami

Fri 12/12

6:05 am-11:26 pm

2 stops18h 21m

$237

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Fri 12/5

5:40 am-8:54 pm

2 stops14h 14m

Miami

Sat 12/6

5:05 am-6:59 pm

2 stops14h 54m

$239

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Thu 2/19

12:15 pm-9:02 pm

1 stop7h 47m

Miami

Sat 2/28

6:00 am-10:40 am

1 stop5h 40m

$258

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Tue 3/3

7:00 am-5:54 pm

1 stop9h 54m

Key West

Sat 3/7

4:53 pm-10:33 pm

1 stop6h 40m

$330

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 1/5

7:05 am-4:29 pm

1 stop8h 24m

Key West

Fri 1/9

4:15 pm-3:46 pm

3 stops24h 31m

$484

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How to get the cheapest flight ticket from San Antonio to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Florida Keys?

The month of November is another great option to travel to Florida Keys, with average flight prices from San Antonio averaging around $359.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from San Antonio to Florida Keys is on a Friday when prices can be found for as low as $509. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $570.

What is the cheapest time of day to depart on your flight to Florida Keys?

According to our data, the cheapest time of day to fly to Florida Keys is in the evening. momondo users have found flights departing from San Antonio to Florida Keys in the evening for as low as $256. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $559.

How far in advance should I book a flight to Florida Keys?

You are more likely to see cheaper flights to Florida Keys from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $384 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from San Antonio for as low as $286 on momondo.

Can stopping save me money on San Antonio to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between San Antonio to Florida Keys.

Cheap San Antonio to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Florida Keys

Fastest flight time	2h 39m
Direct flights	Every day
Airports in Florida Keys	1 airport

The fastest flight from San Antonio to Florida Keys takes 2h 39m

Direct flights go from San Antonio to Florida Keys every day.

There is 1 airport near Florida Keys: Miami (MIA)

Search flight deals

When did momondo last update prices for flights from San Antonio Airport to Florida Keys?
Prices for flights from San Antonio Airport to Florida Keys are updated daily.
How many operators does momondo search for flights from San Antonio Airport to Florida Keys?
As of November 2025, there are 6 operators available to choose from for flights from San Antonio Airport to Florida Keys.
How old do you have to be to fly from San Antonio Airport to Florida Keys?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The travel and health documents required for your trip to Florida Keys can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Florida Keys. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Antonio to Florida Keys?
momondo data reveals that the most frequently booked plane model on the route from San Antonio to Florida Keys is Boeing 737 MAX 8, representing 13.34% of all bookings. The subsequent popular models are Airbus A320-100/200 at 13.12%, Airbus A321-100/200 at 9.57%, and Airbus A319 at 8.94%.

Best airlines flying from San Antonio to Florida Keys

Compare and see reviews for airlines that fly from San Antonio to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $227	Free Cancellation	Rating 7.9 8,001 reviews		Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 11,034 reviews		Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Florida Keys?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Antonio to Florida Keys. momondo saves you time and could save you money on your trip.

Can I find flights from San Antonio to Florida Keys with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for San Antonio to Florida Keys flights to just show those with flexible booking policies.

How can momondo help me find flights from San Antonio to Florida Keys?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Antonio to Florida Keys.

I’m not ready to book a flight from San Antonio to Florida Keys right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Florida Keys, momondo offers a useful price alert feature which will track prices for flights to Florida Keys from San Antonio and alert you when they change.

An easier way to manage your Florida Keys trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Florida Keys

Popular cities in Florida Keys

Flights to New Yorkfrom $49

Flights to Los Angelesfrom $49

Flights to Miamifrom $49

Flights to Chicagofrom $54

Flights to Orlandofrom $47

Flights to Las Vegasfrom $49

Flights to San Franciscofrom $54

Flights to Washington, D.C.from $54

Flights to Bostonfrom $40

Flights to Atlantafrom $40

Flights to Dallasfrom $49

Flights to Seattlefrom $68

Cheap flights from San Antonio to Florida Keys from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Florida Keys departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

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Find the cheapest flights from San Antonio to Florida Keys

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Frontier flights from San Antonio to Florida Keys

Our best Frontier deals on San Antonio to Florida Keys flight tickets

American Airlines flights from San Antonio to Florida Keys

Our best American Airlines deals on San Antonio to Florida Keys flight tickets

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Use the filters below to find and compare flights from San Antonio to Florida Keys that are best for you.

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How to get the cheapest flight ticket from San Antonio to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Florida Keys?

The month of November is another great option to travel to Florida Keys, with average flight prices from San Antonio averaging around $359.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from San Antonio to Florida Keys is on a Friday when prices can be found for as low as $509. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $570.

What is the cheapest time of day to depart on your flight to Florida Keys?

How far in advance should I book a flight to Florida Keys?

Can stopping save me money on San Antonio to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between San Antonio to Florida Keys.

What is the cheapest airline that flies from San Antonio to Florida Keys?

Frontier, Southwest, and Spirit Airlines are the most popular carriers operating from San Antonio to Florida Keys

What airlines fly to Florida Keys?

How many flights depart from San Antonio to Florida Keys on average per week?

As of November 2025, there are 14 flights per week flying from San Antonio to Florida Keys. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

Cheap San Antonio to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Florida Keys

Fastest flight time

Direct flights

Airports in Florida Keys

When did momondo last update prices for flights from San Antonio Airport to Florida Keys?

How many operators does momondo search for flights from San Antonio Airport to Florida Keys?

How old do you have to be to fly from San Antonio Airport to Florida Keys?

What documentation or ID do you need to fly to Florida Keys?

What is the most popular plane model from San Antonio to Florida Keys?

Best airlines flying from San Antonio to Florida Keys

Compare and see reviews for airlines that fly from San Antonio to Florida Keys with momondo

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Florida Keys?

Can I find flights from San Antonio to Florida Keys with flexible booking policies on momondo?

How can momondo help me find flights from San Antonio to Florida Keys?

I’m not ready to book a flight from San Antonio to Florida Keys right now. Can momondo alert me if prices change?

An easier way to manage your Florida Keys trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Florida Keys

Popular cities in Florida Keys

Popular flights according to clicks in the last 7 days on momondo