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Cheap flights from San Antonio to Key West from $219

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 11/12. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:40 pm - 9:50 pmSAT-EYW
7h 10m1 stop
American Airlines Logo
4:03 pm - 11:26 pmEYW-SAT
8h 23m1 stop
$225American Airlines
Find Deal
Sat, Dec 13 - Fri, Dec 19
Delta Logo
11:36 am - 8:06 pmSAT-EYW
7h 30m1 stop
Delta Logo
7:25 am - 12:28 pmEYW-SAT
6h 03m1 stop
$228Delta
Find Deal
Wed, Dec 17 - Mon, Dec 22
United Airlines Logo
9:51 am - 3:48 pmSAT-EYW
4h 57m1 stop
United Airlines Logo
4:15 pm - 11:15 pmEYW-SAT
8h 00m1 stop
$259United Airlines
Find Deal
Sat, Jan 3 - Fri, Jan 9
Multiple Airlines Logo
5:56 pm - 3:16 pmSAT-EYW
44h 20m2 stops
Multiple Airlines Logo
1:06 pm - 12:07 amEYW-SAT
12h 01m1 stop
$262Multiple Airlines
Find Deal
Mon, Jan 5 - Mon, Jan 12
American Airlines Logo
6:00 am - 4:12 pmSAT-EYW
9h 12m2 stops
American Airlines Logo
4:03 pm - 11:26 pmEYW-SAT
8h 23m1 stop
$276American Airlines
Find Deal
Sat, Dec 13 - Fri, Dec 19
Spirit Airlines Logo
7:00 am - 11:20 amSAT-EYW
27h 20m3 stops
Spirit Airlines Logo
2:30 pm - 11:26 pmEYW-SAT
9h 56m1 stop
$292Spirit Airlines
Find Deal
Sat, Dec 13 - Fri, Dec 19
Delta Logo
11:35 am - 7:53 pmSAT-EYW
7h 18m1 stop
Delta Logo
6:18 pm - 12:38 amEYW-SAT
7h 20m1 stop
$296Delta
Find Deal
Thu, Nov 20 - Mon, Nov 24
Multiple Airlines Logo
12:45 pm - 8:15 amSAT-EYW
18h 30m1 stop
Multiple Airlines Logo
1:06 pm - 9:18 amEYW-SAT
45h 12m2 stops
$297Multiple Airlines
Find Deal
Sat, Jan 3 - Fri, Jan 9
Spirit Airlines Logo
7:00 am - 11:20 amSAT-EYW
27h 20m3 stops
Spirit Airlines Logo
2:30 pm - 5:35 amEYW-SAT
16h 05m2 stops
$359Spirit Airlines
Find Deal
Sat, Dec 13 - Fri, Dec 19
United Airlines Logo
6:40 am - 3:12 pmSAT-EYW
7h 32m1 stop
United Airlines Logo
4:15 pm - 3:46 pmEYW-SAT
24h 31m3 stops
$479United Airlines
Find Deal
Mon, Jan 5 - Fri, Jan 9

American Airlines flights from San Antonio to Key West

Our best American Airlines deals on San Antonio to Key West flight tickets
American Airlines
Dec 13
SAT1:40 pmSan Antonio
7h 10m
1 stop
EYW9:50 pmKey West
Dec 19
EYW4:03 pmKey West
8h 23m
1 stop
SAT11:26 pmSan Antonio
$225
Find similar
American Airlines
Dec 13
SAT6:00 amSan Antonio
9h 12m
2 stops
EYW4:12 pmKey West
Dec 19
EYW4:03 pmKey West
8h 23m
1 stop
SAT11:26 pmSan Antonio
$276
Find similar
American Airlines
Jan 3
SAT5:00 amSan Antonio
7h 26m
1 stop
EYW1:26 pmKey West
Jan 9
EYW2:43 pmKey West
8h 09m
1 stop
SAT9:52 pmSan Antonio
$299
Find similar

Delta flights from San Antonio to Key West

Our best Delta deals on San Antonio to Key West flight tickets
Delta
Dec 17
SAT11:36 amSan Antonio
7h 30m
1 stop
EYW8:06 pmKey West
Dec 22
EYW7:25 amKey West
6h 03m
1 stop
SAT12:28 pmSan Antonio
$228
Find similar
Delta
Nov 20
SAT11:35 amSan Antonio
7h 18m
1 stop
EYW7:53 pmKey West
Nov 24
EYW6:18 pmKey West
7h 20m
1 stop
SAT12:38 amSan Antonio
$296
Find similar
Delta
Nov 18
SAT8:00 amSan Antonio
5h 03m
1 stop
EYW2:03 pmKey West
Nov 22
EYW6:18 pmKey West
6h 50m
1 stop
SAT12:08 amSan Antonio
$301
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 November 6, 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 12/13

1:40 pm-9:50 pm

1 stop7h 10m

Key West

Fri 12/19

4:03 pm-11:26 pm

1 stop8h 23m

$225

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 12/17

11:36 am-8:06 pm

1 stop7h 30m

Key West

Mon 12/22

7:25 am-12:28 pm

1 stop6h 03m

$228

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 1/3

9:51 am-3:48 pm

1 stop4h 57m

Key West

Fri 1/9

4:15 pm-11:15 pm

1 stop8h 00m

$259

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 1/5

5:56 pm-3:16 pm

2 stops44h 20m

Key West

Mon 1/12

1:06 pm-12:07 am

1 stop12h 01m

$262

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 12/13

6:00 am-4:12 pm

2 stops9h 12m

Key West

Fri 12/19

4:03 pm-11:26 pm

1 stop8h 23m

$276

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 12/13

7:00 am-11:20 am

3 stops27h 20m

Key West

Fri 12/19

2:30 pm-11:26 pm

1 stop9h 56m

$292

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 11/20

11:35 am-7:53 pm

1 stop7h 18m

Key West

Mon 11/24

6:18 pm-12:38 am

1 stop7h 20m

$296

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 1/3

12:45 pm-8:15 am

1 stop18h 30m

Key West

Fri 1/9

1:06 pm-9:18 am

2 stops45h 12m

$297

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 12/13

7:00 am-11:20 am

3 stops27h 20m

Key West

Fri 12/19

2:30 pm-5:35 am

2 stops16h 05m

$359

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 1/5

6:40 am-3:12 pm

1 stop7h 32m

Key West

Fri 1/9

4:15 pm-3:46 pm

3 stops24h 31m

$479

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 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, 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 46m 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
8,004 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,042 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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