What airlines fly to Key West?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Key West from San Antonio according to our data. American Airlines is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Key West. Keep in mind that there are 3 different airlines that fly to Key West on a routine basis, so you have a few additional options to choose from.

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?

As of December 2025, there are 2 operators available to choose from 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.

$191 Cheap Flights from San Antonio to Key West in 2025/26

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Find the cheapest flights from San Antonio to Key West

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8:10 am - 6:01 pm

SAT

EYW

8h 51m1 stop

7:45 pm - 11:59 pm

EYW

SAT

5h 14m1 stop

$191American Airlines

Wed, Jan 28 - Tue, Feb 10

5:10 pm - 11:56 pm

SAT

EYW

5h 46m1 stop

6:06 am - 3:49 pm

EYW

SAT

10h 43m2 stops

$196American Airlines

Wed, Jan 28 - Tue, Feb 10

1:08 pm - 11:56 pm

SAT

EYW

9h 48m2 stops

6:06 am - 3:49 pm

EYW

SAT

10h 43m2 stops

$201American Airlines

Wed, Jan 28 - Tue, Feb 10

10:35 am - 1:30 pm

SAT

EYW

25h 55m1 stop

12:51 pm - 9:40 am

EYW

SAT

21h 49m1 stop

$214Spirit Airlines

Thu, Jan 22 - Thu, Jan 29

5:10 am - 1:03 pm

SAT

EYW

6h 53m1 stop

5:15 pm - 9:52 pm

EYW

SAT

5h 37m1 stop

$225American Airlines

Sun, Jan 25 - Sat, Jan 31

5:10 am - 1:03 pm

SAT

EYW

6h 53m1 stop

6:06 am - 2:16 pm

EYW

SAT

9h 10m2 stops

$230American Airlines

Sun, Jan 25 - Sat, Jan 31

1:08 pm - 11:56 pm

SAT

EYW

9h 48m2 stops

6:06 am - 3:45 pm

EYW

SAT

10h 39m2 stops

$235American Airlines

Sun, Jan 25 - Sat, Jan 31

10:35 am - 9:09 am

SAT

EYW

21h 34m2 stops

12:51 pm - 9:40 am

EYW

SAT

21h 49m1 stop

$242Multiple Airlines

Thu, Jan 22 - Thu, Jan 29

7:14 pm - 12:26 pm

SAT

EYW

16h 12m1 stop

12:51 pm - 9:40 am

EYW

SAT

21h 49m1 stop

$250Multiple Airlines

Thu, Jan 8 - Sun, Jan 11

1:57 pm - 12:26 pm

SAT

EYW

21h 29m1 stop

9:46 am - 7:29 pm

EYW

SAT

10h 43m1 stop

$273Multiple Airlines

Thu, Feb 19 - Sun, Feb 22

American Airlines flights from San Antonio to Key West

Our best American Airlines deals on San Antonio to Key West flight tickets

American Airlines

Jan 28

SAT8:10 amSan Antonio

8h 51m

1 stop

EYW6:01 pmKey West

Feb 10

EYW7:45 pmKey West

5h 14m

1 stop

SAT11:59 pmSan Antonio

$191

Find similar

American Airlines

Jan 28

SAT5:10 pmSan Antonio

5h 46m

1 stop

EYW11:56 pmKey West

Feb 10

EYW6:06 amKey West

10h 43m

2 stops

SAT3:49 pmSan Antonio

$196

Find similar

American Airlines

Jan 28

SAT1:08 pmSan Antonio

9h 48m

2 stops

EYW11:56 pmKey West

Feb 10

EYW6:06 amKey West

10h 43m

2 stops

SAT3:49 pmSan Antonio

$201

Find similar

Spirit Airlines flights from San Antonio to Key West

Our best Spirit Airlines deals on San Antonio to Key West flight tickets

Spirit Airlines

Jan 22

SAT10:35 amSan Antonio

25h 55m

1 stop

EYW1:30 pmKey West

Jan 29

EYW12:51 pmKey West

21h 49m

1 stop

SAT9:40 amSan Antonio

$214

Find similar

Spirit Airlines

Jan 5

SAT12:45 pmSan Antonio

21h 35m

3 stops

EYW11:20 amKey West

Jan 9

EYW2:25 pmKey West

34h 27m

3 stops

SAT11:52 pmSan Antonio

$483

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 1/28

8:10 am-6:01 pm

1 stop8h 51m

Key West

Tue 2/10

7:45 pm-11:59 pm

1 stop5h 14m

$191

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 1/28

5:10 pm-11:56 pm

1 stop5h 46m

Key West

Tue 2/10

6:06 am-3:49 pm

2 stops10h 43m

$196

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 1/28

1:08 pm-11:56 pm

2 stops9h 48m

Key West

Tue 2/10

6:06 am-3:49 pm

2 stops10h 43m

$201

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 1/22

10:35 am-1:30 pm

1 stop25h 55m

Key West

Thu 1/29

12:51 pm-9:40 am

1 stop21h 49m

$214

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 1/25

5:10 am-1:03 pm

1 stop6h 53m

Key West

Sat 1/31

5:15 pm-9:52 pm

1 stop5h 37m

$225

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 1/25

5:10 am-1:03 pm

1 stop6h 53m

Key West

Sat 1/31

6:06 am-2:16 pm

2 stops9h 10m

$230

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 1/25

1:08 pm-11:56 pm

2 stops9h 48m

Key West

Sat 1/31

6:06 am-3:45 pm

2 stops10h 39m

$235

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 1/22

10:35 am-9:09 am

2 stops21h 34m

Key West

Thu 1/29

12:51 pm-9:40 am

1 stop21h 49m

$242

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 1/8

7:14 pm-12:26 pm

1 stop16h 12m

Key West

Sun 1/11

12:51 pm-9:40 am

1 stop21h 49m

$250

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 2/19

1:57 pm-12:26 pm

1 stop21h 29m

Key West

Sun 2/22

9:46 am-7:29 pm

1 stop10h 43m

$273

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Key West?

In general, January 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 January, then departing from San Antonio during the month August is also very affordable. Most momondo users find prices during this month for around $258.

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

Fastest flight time	5h 08m
Direct flights	None

The fastest flight from San Antonio to Key West takes 5h 08m

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 08m 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?
As of December 2025, there are 2 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Antonio to Key West is American Airlines (84% of total bookings). The next most popular airline is Delta (16%).

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
Delta	PriceFrom $227	Free Cancellation	Rating 7.9 8,014 reviews		Search Delta flights
American Airlines	PriceFrom $236	Free Cancellation	Rating 7.2 11,054 reviews		Search American Airlines flights

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

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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.

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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.

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