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Cheap flights from San Antonio to Key West from $131

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 Key West departing on 2/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from San Antonio to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:26 am - 11:17 am
SAT
-
EYW
23h 51m
1 stop
Multiple Airlines Logo
9:46 am - 10:29 pm
EYW
-
SAT
13h 43m
1 stop
$240Multiple Airlines
Sat, Apr 25 - Thu, Apr 30
Multiple Airlines Logo
8:14 pm - 12:26 pm
SAT
-
EYW
15h 12m
1 stop
Multiple Airlines Logo
9:46 am - 11:59 pm
EYW
-
SAT
15h 13m
1 stop
$274Multiple Airlines
Sun, Feb 22 - Thu, Feb 26
Multiple Airlines Logo
8:14 pm - 12:26 pm
SAT
-
EYW
15h 12m
1 stop
Multiple Airlines Logo
9:46 am - 4:15 pm
EYW
-
SAT
31h 29m
2 stops
$277Multiple Airlines
Sun, Feb 22 - Thu, Feb 26
Multiple Airlines Logo
10:26 am - 11:17 am
SAT
-
EYW
23h 51m
1 stop
Multiple Airlines Logo
4:22 pm - 9:30 am
EYW
-
SAT
42h 08m
2 stops
$294Multiple Airlines
Sat, Apr 25 - Thu, Apr 30
Spirit Airlines Logo
10:26 am - 1:30 pm
SAT
-
EYW
26h 04m
1 stop
Spirit Airlines Logo
12:15 pm - 9:30 am
EYW
-
SAT
22h 15m
1 stop
$322Spirit Airlines
Thu, May 14 - Sun, May 17
Multiple Airlines Logo
6:00 am - 12:26 pm
SAT
-
EYW
5h 26m
1 stop
Multiple Airlines Logo
1:01 pm - 2:19 pm
EYW
-
SAT
26h 18m
2 stops
$341Multiple Airlines
Fri, Apr 17 - Tue, Apr 21
American Airlines Logo
1:09 pm - 10:37 pm
SAT
-
EYW
8h 28m
1 stop
American Airlines Logo
7:45 pm - 11:59 pm
EYW
-
SAT
5h 14m
1 stop
$345American Airlines
Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
1:09 pm - 10:37 pm
SAT
-
EYW
8h 28m
1 stop
American Airlines Logo
1:55 pm - 11:55 pm
EYW
-
SAT
11h 00m
2 stops
$350American Airlines
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
6:49 am - 2:51 pm
SAT
-
EYW
7h 02m
1 stop
United Airlines Logo
3:47 pm - 10:53 pm
EYW
-
SAT
8h 06m
1 stop
$367United Airlines
Fri, Apr 17 - Tue, Apr 21
Multiple Airlines Logo
2:13 pm - 12:26 pm
SAT
-
EYW
21h 13m
1 stop
Multiple Airlines Logo
10:33 pm - 9:27 am
EYW
-
SAT
35h 54m
2 stops
$368Multiple Airlines
Sun, Mar 8 - Sun, Mar 15

Spirit Airlines flights from San Antonio to Key West

Our best Spirit Airlines deals on San Antonio to Key West flight tickets
Spirit Airlines
May 14
SAT10:26 amSan Antonio
26h 04m
1 stop
EYW1:30 pmKey West
May 17
EYW12:15 pmKey West
22h 15m
1 stop
SAT9:30 amSan Antonio
$322
Spirit Airlines
Mar 8
SAT6:00 amSan Antonio
30h 30m
3 stops
EYW1:30 pmKey West
Mar 15
EYW12:25 pmKey West
25h 02m
2 stops
SAT12:27 pmSan Antonio
$691
Spirit Airlines
Feb 22
SAT6:00 amSan Antonio
30h 30m
3 stops
EYW1:30 pmKey West
Feb 26
EYW2:25 pmKey West
34h 34m
3 stops
SAT11:59 pmSan Antonio
$752

United Airlines flights from San Antonio to Key West

Our best United Airlines deals on San Antonio to Key West flight tickets
United Airlines
Apr 17
SAT6:49 amSan Antonio
7h 02m
1 stop
EYW2:51 pmKey West
Apr 21
EYW3:47 pmKey West
8h 06m
1 stop
SAT10:53 pmSan Antonio
$367
United Airlines
Apr 27
SAT6:49 amSan Antonio
7h 02m
1 stop
EYW2:51 pmKey West
May 1
EYW4:47 pmKey West
29h 02m
2 stops
SAT8:49 pmSan Antonio
$479
United Airlines
Apr 27
SAT9:40 amSan Antonio
5h 17m
1 stop
EYW3:57 pmKey West
May 1
EYW4:47 pmKey West
19h 00m
1 stop
SAT10:47 amSan Antonio
$484

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Key West 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 February 9, 2026.
Use the filters below to find and compare flights from San Antonio to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 4/25

10:26 am-11:17 am

1 stop23h 51m

Key West

Thu 4/30

9:46 am-10:29 pm

1 stop13h 43m

$240

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-11:59 pm

1 stop15h 13m

$274

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 AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 4/25

10:26 am-11:17 am

1 stop23h 51m

Key West

Thu 4/30

4:22 pm-9:30 am

2 stops42h 08m

$294

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 5/14

10:26 am-1:30 pm

1 stop26h 04m

Key West

Sun 5/17

12:15 pm-9:30 am

1 stop22h 15m

$322

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Fri 4/17

6:00 am-12:26 pm

1 stop5h 26m

Key West

Tue 4/21

1:01 pm-2:19 pm

2 stops26h 18m

$341

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 2/21

1:09 pm-10:37 pm

1 stop8h 28m

Key West

Wed 2/25

7:45 pm-11:59 pm

1 stop5h 14m

$345

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 2/21

1:09 pm-10:37 pm

1 stop8h 28m

Key West

Wed 2/25

1:55 pm-11:55 pm

2 stops11h 00m

$350

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Fri 4/17

6:49 am-2:51 pm

1 stop7h 02m

Key West

Tue 4/21

3:47 pm-10:53 pm

1 stop8h 06m

$367

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 3/8

2:13 pm-12:26 pm

1 stop21h 13m

Key West

Sun 3/15

10:33 pm-9:27 am

2 stops35h 54m

$368

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 Key West from

How to get the cheapest flight ticket from San Antonio to Key West

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 Key West?

In general, August is the cheapest month to fly from San Antonio to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $258. If you are unable to visit Key West during the month of August, then departing from San Antonio during the month January is also very affordable. Most momondo users find prices during this month for around $284.

When to book flights from San Antonio to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Key West according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Key West (SAT to EYW) flight deals and tips

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

Fastest flight time

5h 26m

Direct flights

None
The fastest flight from San Antonio to Key West takes 5h 26m
There are no direct flights from San Antonio to Key West. There are no popular flight routes from San Antonio to Key West.
Search flight deals

  • How far is San Antonio to Key West by plane?

    There are 1079.4 mi between San Antonio and Key West. Typically, this will take 5h 26m by plane in normal conditions.

  • When did momondo last update prices for flights from San Antonio Airport to Key West Airport?

    Prices for flights from San Antonio Airport to Key West Airport are updated daily.

  • How many operators does momondo search for flights from San Antonio Airport to Key West Airport?

  • How old do you have to be to fly from San Antonio Airport to Key West Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Key West Airport.

  • What documentation or ID do you need to fly to Key West Airport?

    The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San Antonio to Key West?

Best airlines flying from San Antonio to Key West

Compare and see reviews for airlines that fly from San Antonio to Key West with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $227Free CancellationRating
7.9
8,174 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
11,258 reviews
Search American Airlines flights

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Key West?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Antonio to Key West for you.

Can I find flights from San Antonio to Key West with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Key West from San Antonio with this policy.

How can momondo help me find flights from San Antonio to Key West?

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 Key West.

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

Of course. momondo tracks the price of San Antonio to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Key West trip

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