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Cheap flights from San Antonio to Florida Keys from $64

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 2/21. 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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0 bags

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Find the cheapest flights from San Antonio to Florida Keys

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:10 am - 8:58 am
SAT
-
MIA
2h 48mnonstop
American Airlines Logo
9:31 pm - 11:59 pm
MIA
-
SAT
3h 28mnonstop
$179American Airlines
Sat, Jan 17 - Sat, Jan 24
Frontier Logo
5:12 pm - 5:14 am
SAT
-
MIA
11h 02m1 stop
Frontier Logo
5:05 am - 4:18 pm
MIA
-
SAT
12h 13m1 stop
$182Frontier
Wed, Feb 25 - Mon, Mar 2
American Airlines Logo
5:10 am - 8:58 am
SAT
-
MIA
2h 48mnonstop
American Airlines Logo
2:06 pm - 4:30 pm
MIA
-
SAT
3h 24mnonstop
$189American Airlines
Wed, Jan 7 - Wed, Jan 21
Delta Logo
1:35 pm - 7:42 pm
SAT
-
EYW
5h 07m1 stop
Delta Logo
6:07 pm - 12:34 am
EYW
-
SAT
7h 27m1 stop
$197Delta
Wed, Feb 25 - Wed, Mar 4
Southwest Logo
4:25 pm - 9:55 pm
SAT
-
MIA
4h 30m1 stop
Southwest Logo
12:00 pm - 7:05 pm
MIA
-
SAT
8h 05m1 stop
$199Southwest
Mon, Jan 19 - Thu, Jan 22
Frontier Logo
8:20 pm - 5:14 am
SAT
-
MIA
7h 54m1 stop
Frontier Logo
6:25 am - 4:17 pm
MIA
-
SAT
10h 52m1 stop
$203Frontier
Thu, Feb 26 - Wed, Mar 4
Multiple Airlines Logo
5:56 pm - 12:51 am
SAT
-
MIA
5h 55m1 stop
Multiple Airlines Logo
8:00 am - 11:26 pm
MIA
-
SAT
16h 26m2 stops
$206Multiple Airlines
Mon, Jan 5 - Wed, Jan 7
Multiple Airlines Logo
10:35 am - 12:47 am
SAT
-
MIA
13h 12m2 stops
Multiple Airlines Logo
7:00 am - 5:03 pm
MIA
-
SAT
11h 03m1 stop
$208Multiple Airlines
Sat, Jan 24 - Mon, Feb 2
Southwest Logo
2:10 pm - 9:30 pm
SAT
-
MIA
6h 20m1 stop
Southwest Logo
12:55 pm - 9:10 pm
MIA
-
SAT
9h 15m1 stop
$209Southwest
Wed, Jan 7 - Wed, Jan 21
Delta Logo
10:57 am - 5:12 pm
SAT
-
EYW
5h 15m1 stop
Delta Logo
6:07 pm - 12:34 am
EYW
-
SAT
7h 27m1 stop
$228Delta
Wed, Feb 25 - Thu, Mar 5

Southwest flights from San Antonio to Florida Keys

Our best Southwest deals on San Antonio to Florida Keys flight tickets
Southwest
Jan 19
SAT4:25 pmSan Antonio
4h 30m
1 stop
MIA9:55 pmMiami
Jan 22
MIA12:00 pmMiami
8h 05m
1 stop
SAT7:05 pmSan Antonio
$199
Find similar
Southwest
Jan 7
SAT2:10 pmSan Antonio
6h 20m
1 stop
MIA9:30 pmMiami
Jan 21
MIA12:55 pmMiami
9h 15m
1 stop
SAT9:10 pmSan Antonio
$209
Find similar
Southwest
Jan 7
SAT5:45 amSan Antonio
9h 25m
1 stop
MIA4:10 pmMiami
Jan 9
MIA2:00 pmMiami
8h 55m
1 stop
SAT9:55 pmSan Antonio
$219
Find similar

Spirit Airlines flights from San Antonio to Florida Keys

Our best Spirit Airlines deals on San Antonio to Florida Keys flight tickets
Spirit Airlines
Jan 14
SAT6:30 amSan Antonio
13h 35m
2 stops
MIA9:05 pmMiami
Jan 21
MIA7:00 amMiami
27h 40m
2 stops
SAT9:40 amSan Antonio
$221
Find similar
Spirit Airlines
Jan 21
SAT6:30 amSan Antonio
29h 26m
3 stops
MIA12:56 pmMiami
Jan 28
MIA7:00 amMiami
27h 40m
2 stops
SAT9:40 amSan Antonio
$237
Find similar
Spirit Airlines
Jan 14
SAT6:30 amSan Antonio
13h 35m
2 stops
MIA9:05 pmMiami
Jan 21
MIA7:00 amMiami
27h 40m
3 stops
SAT9:40 amSan Antonio
$241
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from San Antonio to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

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

Wed 2/25

5:12 pm-5:14 am

1 stop11h 02m

Miami

Mon 3/2

5:05 am-4:18 pm

1 stop12h 13m

$182

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Wed 1/7

5:10 am-8:58 am

Nonstop2h 48m

Miami

Wed 1/21

2:06 pm-4:30 pm

Nonstop3h 24m

$189

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 2/25

1:35 pm-7:42 pm

1 stop5h 07m

Key West

Wed 3/4

6:07 pm-12:34 am

1 stop7h 27m

$197

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Mon 1/19

4:25 pm-9:55 pm

1 stop4h 30m

Miami

Thu 1/22

12:00 pm-7:05 pm

1 stop8h 05m

$199

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Thu 2/26

8:20 pm-5:14 am

1 stop7h 54m

Miami

Wed 3/4

6:25 am-4:17 pm

1 stop10h 52m

$203

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Mon 1/5

5:56 pm-12:51 am

1 stop5h 55m

Miami

Wed 1/7

8:00 am-11:26 pm

2 stops16h 26m

$206

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 1/24

10:35 am-12:47 am

2 stops13h 12m

Miami

Mon 2/2

7:00 am-5:03 pm

1 stop11h 03m

$208

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Wed 1/7

2:10 pm-9:30 pm

1 stop6h 20m

Miami

Wed 1/21

12:55 pm-9:10 pm

1 stop9h 15m

$209

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 2/25

10:57 am-5:12 pm

1 stop5h 15m

Key West

Thu 3/5

6:07 pm-12:34 am

1 stop7h 27m

$228

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Florida Keys from

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 March is another great option to travel to Florida Keys, with average flight prices from San Antonio averaging around $361.

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 $513. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $569.

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 at noon. momondo users have found flights departing from San Antonio to Florida Keys at noon for as low as $339. 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 $561.

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 $390 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 $290 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 48m

Direct flights

Every day

Airports in Florida Keys

3 airports
The fastest flight from San Antonio to Florida Keys takes 2h 48m
Direct flights go from San Antonio to Florida Keys every day.
There are 3 airports in Florida Keys. From San Antonio there are direct flights to 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?

  • 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?

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
DeltaPriceFrom $227Free CancellationRating
7.9
8,005 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,054 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

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Find better results for your trip to Florida Keys

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