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Cheap flights from San Antonio to Key West from $186

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 8/6. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
5:38 pm - 7:13 pm
SAT
-
EYW
24h 35m
2 stops
Multiple Airlines Logo
12:07 pm - 8:56 am
EYW
-
SAT
21h 49m
1 stop
$273Multiple Airlines
Sat, Aug 29 - Fri, Sep 4
Multiple Airlines Logo
5:38 pm - 7:13 pm
SAT
-
EYW
24h 35m
2 stops
Multiple Airlines Logo
12:07 pm - 8:56 am
EYW
-
SAT
21h 49m
1 stop
$275Multiple Airlines
Sat, Aug 29 - Fri, Sep 4
American Airlines Logo
5:15 am - 11:08 am
SAT
-
EYW
4h 53m
1 stop
American Airlines Logo
1:50 pm - 7:26 pm
EYW
-
SAT
6h 36m
1 stop
$319American Airlines
Sat, Aug 29 - Fri, Sep 4
Multiple Airlines Logo
9:55 am - 10:27 am
SAT
-
EYW
23h 32m
1 stop
Multiple Airlines Logo
12:07 pm - 8:56 am
EYW
-
SAT
21h 49m
1 stop
$328Multiple Airlines
Sun, Aug 30 - Fri, Sep 4
Breeze Airways Logo
9:55 am - 10:27 am
SAT
-
EYW
23h 32m
1 stop
Breeze Airways Logo
1:11 pm - 4:58 pm
EYW
-
SAT
28h 47m
2 stops
$331Breeze Airways
Sun, Aug 30 - Fri, Sep 4
American Airlines Logo
8:00 am - 4:11 pm
SAT
-
EYW
7h 11m
1 stop
American Airlines Logo
7:40 pm - 11:59 pm
EYW
-
SAT
5h 19m
1 stop
$344American Airlines
Tue, Jul 28 - Mon, Aug 3
Multiple Airlines Logo
9:55 am - 10:27 am
SAT
-
EYW
23h 32m
1 stop
Multiple Airlines Logo
12:07 pm - 9:29 pm
EYW
-
SAT
34h 22m
2 stops
$379Multiple Airlines
Thu, Aug 20 - Mon, Aug 24
American Airlines Logo
5:15 am - 1:09 pm
SAT
-
EYW
6h 54m
1 stop
American Airlines Logo
1:50 pm - 9:15 pm
EYW
-
SAT
8h 25m
1 stop
$386American Airlines
Thu, Aug 20 - Mon, Aug 24
American Airlines Logo
5:15 am - 1:09 pm
SAT
-
EYW
6h 54m
1 stop
American Airlines Logo
7:10 pm - 11:59 pm
EYW
-
SAT
5h 49m
1 stop
$407American Airlines
Sun, Aug 9 - Sat, Aug 15
Multiple Airlines Logo
9:55 am - 10:27 am
SAT
-
EYW
23h 32m
1 stop
Multiple Airlines Logo
4:35 pm - 6:54 pm
EYW
-
SAT
27h 19m
2 stops
$418Multiple Airlines
Sun, Aug 9 - Sat, Aug 15

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United Airlines flights from San Antonio to Key West

Our best United Airlines deals on San Antonio to Key West flight tickets
United Airlines
Jul 21
SAT6:40 amSan Antonio
7h 39m
1 stop
EYW3:19 pmKey West
Jul 24
EYW4:00 pmKey West
21h 29m
1 stop
SAT12:29 pmSan Antonio
$836
United Airlines
Jul 23
SAT6:40 amSan Antonio
7h 39m
1 stop
EYW3:19 pmKey West
Jul 24
EYW4:00 pmKey West
21h 29m
1 stop
SAT12:29 pmSan Antonio
$851
United Airlines
Sep 12
SAT9:10 amSan Antonio
27h 19m
3 stops
EYW1:29 pmKey West
Sep 16
EYW2:20 pmKey West
22h 31m
1 stop
SAT11:51 amSan Antonio
$902

Delta flights from San Antonio to Key West

Our best Delta deals on San Antonio to Key West flight tickets
Delta
Oct 1
SAT1:55 pmSan Antonio
5h 06m
1 stop
EYW8:01 pmKey West
Oct 5
EYW6:19 pmKey West
6h 51m
1 stop
SAT12:10 amSan Antonio
$439
Delta
Jul 17
SAT10:38 amSan Antonio
5h 45m
1 stop
EYW5:23 pmKey West
Jul 24
EYW6:18 pmKey West
7h 02m
1 stop
SAT12:20 amSan Antonio
$474
Delta
Jul 21
SAT12:04 pmSan Antonio
6h 47m
1 stop
EYW7:51 pmKey West
Jul 25
EYW1:04 pmKey West
6h 25m
1 stop
SAT6:29 pmSan Antonio
$494

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 July 14, 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

Cheapest round-trip

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 8/29

5:38 pm-7:13 pm

2 stops24h 35m

Key West

Fri 9/4

12:07 pm-8:56 am

1 stop21h 49m

$273

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 8/29

5:38 pm-7:13 pm

2 stops24h 35m

Key West

Fri 9/4

12:07 pm-8:56 am

1 stop21h 49m

$275
Quickest round-trip

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 8/29

5:15 am-11:08 am

1 stop4h 53m

Key West

Fri 9/4

1:50 pm-7:26 pm

1 stop6h 36m

$319

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 8/30

9:55 am-10:27 am

1 stop23h 32m

Key West

Fri 9/4

12:07 pm-8:56 am

1 stop21h 49m

$328

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 8/30

9:55 am-10:27 am

1 stop23h 32m

Key West

Fri 9/4

1:11 pm-4:58 pm

2 stops28h 47m

$331

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Tue 7/28

8:00 am-4:11 pm

1 stop7h 11m

Key West

Mon 8/3

7:40 pm-11:59 pm

1 stop5h 19m

$344

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 8/20

9:55 am-10:27 am

1 stop23h 32m

Key West

Mon 8/24

12:07 pm-9:29 pm

2 stops34h 22m

$379

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 8/20

5:15 am-1:09 pm

1 stop6h 54m

Key West

Mon 8/24

1:50 pm-9:15 pm

1 stop8h 25m

$386

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 8/9

5:15 am-1:09 pm

1 stop6h 54m

Key West

Sat 8/15

7:10 pm-11:59 pm

1 stop5h 49m

$407

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 8/9

9:55 am-10:27 am

1 stop23h 32m

Key West

Sat 8/15

4:35 pm-6:54 pm

2 stops27h 19m

$418

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 typical price of a round-trip flight between San Antonio and Key West?

What is the cheapest month to fly to Key West?

In general, April 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 April, 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 01m

Direct flights

None
The fastest flight from San Antonio to Key West takes 5h 01m
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

Frequently asked questions about flying from San Antonio to Key West

  • 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 01m 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
American AirlinesPriceFrom $236Free CancellationRating
7.1
11,811 reviews
Search American Airlines flights
DeltaPriceFrom $259Free CancellationRating
7.8
8,462 reviews
Search Delta 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.

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