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Cheap flights from San Antonio to Florida Keys from $87

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 11/3. 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

Frontier Logo
8:26 pm - 6:19 amSAT-MIA
8h 53m1 stop
Frontier Logo
6:00 am - 2:17 pmMIA-SAT
9h 17m1 stop
$173Frontier
Find Deal
Fri, Oct 24 - Sat, Nov 1
Frontier Logo
8:43 pm - 6:19 amSAT-MIA
8h 36m1 stop
Frontier Logo
6:00 am - 7:30 pmMIA-SAT
14h 30m1 stop
$174Frontier
Find Deal
Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
5:30 am - 9:15 amSAT-MIA
2h 45mnonstop
American Airlines Logo
3:30 pm - 5:36 pmMIA-SAT
3h 06mnonstop
$179American Airlines
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Tue, Oct 7 - Sat, Oct 11
Southwest Logo
5:50 am - 8:30 pmSAT-MIA
13h 40m1 stop
Southwest Logo
4:35 pm - 11:15 pmMIA-SAT
7h 40m1 stop
$184Southwest
Find Deal
Sat, Oct 25 - Wed, Oct 29
American Airlines Logo
6:12 pm - 9:58 pmSAT-MIA
2h 46mnonstop
American Airlines Logo
7:42 pm - 9:58 pmMIA-SAT
3h 16mnonstop
$188American Airlines
Find Deal
Thu, Oct 16 - Tue, Oct 21
Southwest Logo
12:10 pm - 11:45 pmSAT-MIA
10h 35m2 stops
Southwest Logo
6:50 am - 2:00 pmMIA-SAT
8h 10m2 stops
$195Southwest
Find Deal
Mon, Nov 10 - Sat, Nov 15
Delta Logo
6:20 pm - 12:25 amSAT-MIA
5h 05m1 stop
Delta Logo
2:03 pm - 8:27 pmMIA-SAT
7h 24m1 stop
$217Delta
Find Deal
Sat, Jan 31 - Tue, Feb 10
Delta Logo
2:00 pm - 9:23 pmSAT-MIA
6h 23m1 stop
Delta Logo
9:00 am - 1:55 pmMIA-SAT
5h 55m1 stop
$249Delta
Find Deal
Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
7:00 am - 2:29 pmSAT-EYW
30h 29m2 stops
United Airlines Logo
3:12 pm - 3:22 pmEYW-SAT
25h 10m3 stops
$713United Airlines
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Mon, Sep 29 - Fri, Oct 3
United Airlines Logo
11:55 am - 2:29 pmSAT-EYW
25h 34m2 stops
United Airlines Logo
3:12 pm - 3:25 pmEYW-SAT
25h 13m3 stops
$724United Airlines
Find Deal
Wed, Oct 1 - Tue, Oct 7

Delta flights from San Antonio to Florida Keys

Our best Delta deals on San Antonio to Florida Keys flight tickets
Delta
Jan 31
SAT6:20 pmSan Antonio
5h 05m
1 stop
MIA12:25 amMiami
Feb 10
MIA2:03 pmMiami
7h 24m
1 stop
SAT8:27 pmSan Antonio
$217
Find similar
Delta
Oct 1
SAT2:00 pmSan Antonio
6h 23m
1 stop
MIA9:23 pmMiami
Oct 4
MIA9:00 amMiami
5h 55m
1 stop
SAT1:55 pmSan Antonio
$249
Find similar
Delta
Feb 1
SAT5:30 amSan Antonio
8h 09m
1 stop
MIA2:39 pmMiami
Feb 11
MIA2:03 pmMiami
7h 24m
1 stop
SAT8:27 pmSan Antonio
$258
Find similar

Southwest flights from San Antonio to Florida Keys

Our best Southwest deals on San Antonio to Florida Keys flight tickets
Southwest
Oct 25
SAT5:50 amSan Antonio
13h 40m
1 stop
MIA8:30 pmMiami
Oct 29
MIA4:35 pmMiami
7h 40m
1 stop
SAT11:15 pmSan Antonio
$184
Find similar
Southwest
Nov 10
SAT12:10 pmSan Antonio
10h 35m
2 stops
MIA11:45 pmMiami
Nov 15
MIA6:50 amMiami
8h 10m
2 stops
SAT2:00 pmSan Antonio
$195
Find similar
Southwest
Oct 1
SAT2:50 pmSan Antonio
5h 55m
1 stop
MIA9:45 pmMiami
Oct 8
MIA6:55 amMiami
7h 40m
1 stop
SAT1:35 pmSan Antonio
$224
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 September 16, 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

Fri 10/24

8:26 pm-6:19 am

1 stop8h 53m

Miami

Sat 11/1

6:00 am-2:17 pm

1 stop9h 17m

$173

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Thu 10/30

8:43 pm-6:19 am

1 stop8h 36m

Miami

Thu 11/6

6:00 am-7:30 pm

1 stop14h 30m

$174

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Tue 10/7

5:30 am-9:15 am

Nonstop2h 45m

Miami

Sat 10/11

3:30 pm-5:36 pm

Nonstop3h 06m

$179

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 10/25

5:50 am-8:30 pm

1 stop13h 40m

Miami

Wed 10/29

4:35 pm-11:15 pm

1 stop7h 40m

$184

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Thu 10/16

6:12 pm-9:58 pm

Nonstop2h 46m

Miami

Tue 10/21

7:42 pm-9:58 pm

Nonstop3h 16m

$188

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Mon 11/10

12:10 pm-11:45 pm

2 stops10h 35m

Miami

Sat 11/15

6:50 am-2:00 pm

2 stops8h 10m

$195

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Sat 1/31

6:20 pm-12:25 am

1 stop5h 05m

Miami

Tue 2/10

2:03 pm-8:27 pm

1 stop7h 24m

$217

San AntonioMiami

SAT - MIA

SATMIA

San Antonio

Wed 10/1

2:00 pm-9:23 pm

1 stop6h 23m

Miami

Sat 10/4

9:00 am-1:55 pm

1 stop5h 55m

$249

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 9/29

7:00 am-2:29 pm

2 stops30h 29m

Key West

Fri 10/3

3:12 pm-3:22 pm

3 stops25h 10m

$713

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 10/1

11:55 am-2:29 pm

2 stops25h 34m

Key West

Tue 10/7

3:12 pm-3:25 pm

3 stops25h 13m

$724

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 February is another great option to travel to Florida Keys, with average flight prices from San Antonio averaging around $357.

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 $545. The most expensive day to fly to Florida Keys is Saturday, with ticket prices averaging around $572.

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 $568.

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 $383 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 35m

Direct flights

Every day

Airports in Florida Keys

1 airport
The fastest flight from San Antonio to Florida Keys takes 2h 35m
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?

  • 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
7,954 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 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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