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Cheap flights from San Antonio to Key West from $130

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 11/16. 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 Key West

Cheap round-trip flights

American Airlines Logo
2:26 pm - 9:56 pmSAT-EYW
6h 30m1 stop
American Airlines Logo
7:53 pm - 11:59 pmEYW-SAT
5h 06m1 stop
$191American Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 4
American Airlines Logo
2:26 pm - 9:56 pmSAT-EYW
6h 30m1 stop
American Airlines Logo
4:18 pm - 12:28 amEYW-SAT
9h 10m2 stops
$242American Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 4
Delta Logo
2:00 pm - 8:07 pmSAT-EYW
5h 07m1 stop
Delta Logo
6:17 pm - 12:20 amEYW-SAT
7h 03m1 stop
$260Delta
Find Deal
Wed, Oct 1 - Tue, Oct 7
Delta Logo
2:00 pm - 8:07 pmSAT-EYW
5h 07m1 stop
Delta Logo
6:10 pm - 11:59 pmEYW-SAT
6h 49m1 stop
$261Delta
Find Deal
Tue, Sep 23 - Tue, Sep 30
American Airlines Logo
5:00 am - 5:46 pmSAT-EYW
11h 46m2 stops
American Airlines Logo
7:31 pm - 11:55 pmEYW-SAT
5h 24m1 stop
$266American Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
American Airlines Logo
5:00 am - 5:46 pmSAT-EYW
11h 46m2 stops
American Airlines Logo
11:25 am - 9:22 pmEYW-SAT
10h 57m2 stops
$271American Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
Multiple Airlines Logo
6:23 pm - 7:46 pmSAT-EYW
24h 23m2 stops
Multiple Airlines Logo
2:25 pm - 3:11 pmEYW-SAT
25h 46m1 stop
$323Multiple Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
Multiple Airlines Logo
6:00 am - 8:15 amSAT-EYW
25h 15m1 stop
Multiple Airlines Logo
2:25 pm - 3:11 pmEYW-SAT
25h 46m1 stop
$328Multiple Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
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
Find Deal
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 Key West

Our best Delta deals on San Antonio to Key West flight tickets
Delta
Oct 1
SAT2:00 pmSan Antonio
5h 07m
1 stop
EYW8:07 pmKey West
Oct 7
EYW6:17 pmKey West
7h 03m
1 stop
SAT12:20 amSan Antonio
$260
Find similar
Delta
Sep 23
SAT2:00 pmSan Antonio
5h 07m
1 stop
EYW8:07 pmKey West
Sep 30
EYW6:10 pmKey West
6h 49m
1 stop
SAT11:59 pmSan Antonio
$261
Find similar
Delta
Oct 1
SAT2:00 pmSan Antonio
5h 07m
1 stop
EYW8:07 pmKey West
Oct 7
EYW6:17 pmKey West
7h 03m
1 stop
SAT12:20 amSan Antonio
$274
Find similar

American Airlines flights from San Antonio to Key West

Our best American Airlines deals on San Antonio to Key West flight tickets
American Airlines
Nov 1
SAT2:26 pmSan Antonio
6h 30m
1 stop
EYW9:56 pmKey West
Nov 4
EYW7:53 pmKey West
5h 06m
1 stop
SAT11:59 pmSan Antonio
$191
Find similar
American Airlines
Nov 1
SAT2:26 pmSan Antonio
6h 30m
1 stop
EYW9:56 pmKey West
Nov 4
EYW4:18 pmKey West
9h 10m
2 stops
SAT12:28 amSan Antonio
$242
Find similar
American Airlines
Sep 23
SAT5:00 amSan Antonio
11h 46m
2 stops
EYW5:46 pmKey West
Sep 30
EYW7:31 pmKey West
5h 24m
1 stop
SAT11:55 pmSan Antonio
$266
Find similar

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 September 16, 2025.
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 11/1

2:26 pm-9:56 pm

1 stop6h 30m

Key West

Tue 11/4

7:53 pm-11:59 pm

1 stop5h 06m

$191

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 11/1

2:26 pm-9:56 pm

1 stop6h 30m

Key West

Tue 11/4

4:18 pm-12:28 am

2 stops9h 10m

$242

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 10/1

2:00 pm-8:07 pm

1 stop5h 07m

Key West

Tue 10/7

6:17 pm-12:20 am

1 stop7h 03m

$260

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Tue 9/23

2:00 pm-8:07 pm

1 stop5h 07m

Key West

Tue 9/30

6:10 pm-11:59 pm

1 stop6h 49m

$261

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Tue 9/23

5:00 am-5:46 pm

2 stops11h 46m

Key West

Tue 9/30

7:31 pm-11:55 pm

1 stop5h 24m

$266

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Tue 9/23

5:00 am-5:46 pm

2 stops11h 46m

Key West

Tue 9/30

11:25 am-9:22 pm

2 stops10h 57m

$271

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 11/12

6:23 pm-7:46 pm

2 stops24h 23m

Key West

Mon 11/17

2:25 pm-3:11 pm

1 stop25h 46m

$323

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 11/12

6:00 am-8:15 am

1 stop25h 15m

Key West

Mon 11/17

2:25 pm-3:11 pm

1 stop25h 46m

$328

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 13 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 April is also very affordable. Most momondo users find prices during this month for around $314.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from San Antonio is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $335. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to Key West for around $438.

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

Direct flights

None
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 4h 22m 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
7,957 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 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.

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