Key West

$131+ Cheap flights from San Antonio to Key West (SAT - EYW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — EYW
Jul 8 — Jul 151
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Cheapflights Tip: The best prices from San Antonio to Key West are usually found in August or April, booked 50 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from San Antonio to Key West

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 3, 2025.

Round-trip from

$193
(American Airlines)

One-way from

$131
(Delta)

Popular in

March

Cheapest in

August

Average price

$406
From San Antonio to Key West
One-way flight from San Antonio to Key West
Highest demand for flights based on searches. 5% potential increase in price ($25 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from San Antonio to Key West

Cheapest flights from San Antonio to Key West
Explore the most affordable flight options available from San Antonio to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This American Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/168:10 amSAT - EYW
1 stop7h 09mAmerican Airlines
Sat 8/235:56 pmEYW - SAT
1 stop6h 40mAmerican Airlines
Deal found 7/2$193
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/910:45 amSAT - EYW
1 stop5h 47mDelta
Tue 8/126:22 pmEYW - SAT
1 stop6h 35mDelta
Deal found 7/1$197
This Mytrip deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/149:00 amSAT - EYW
2 stops23h 22mMultiple Airlines
Thu 7/1710:02 amEYW - SAT
1 stop10h 20mMultiple Airlines
Deal found 6/30$450

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from San Antonio to Key West that are best for you.

Fly from

San Antonio

Fly to

Key West

Route

Depart

Return

Price

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 8/16

8:10 am-4:19 pm

1 stop7h 09m

Key West

Sat 8/23

5:56 pm-11:36 pm

1 stop6h 40m

$193

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 8/9

10:45 am-5:32 pm

1 stop5h 47m

Key West

Tue 8/12

6:22 pm-11:57 pm

1 stop6h 35m

$197

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 7/14

9:00 am-9:22 am

2 stops23h 22m

Key West

Thu 7/17

10:02 am-7:22 pm

1 stop10h 20m

$450

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Tue 7/15

10:40 am-7:49 pm

1 stop8h 09m

$131

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Tue 7/15

7:52 pm-3:05 pm

2 stops18h 13m

$237

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sun 11/9

6:35 am-3:26 pm

1 stop7h 51m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from San Antonio to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from San Antonio with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to Key West

How far ahead should I book a flight from San Antonio to Key West?

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Key West. Price data was last updated on June 27, 2025.

The best time to book flights from San Antonio to Key West is 48 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Antonio to Key West?

Currently, August is the cheapest month in which you can book a flight from San Antonio to Key West (average of $328). Flying from San Antonio to Key West in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with Delta and American Airlines from San Antonio to Key West to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
8.0
Very good
8.0
Very good

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
8.0
Very good

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines flying from San Antonio to Key West round-trip?

    American Airlines, at $193, was found to be the cheapest airline from San Antonio to Key West. An alternate airline flying to your destination would be Delta. American Airlines is currently priced 54% below the average price you’ll pay for this route.

  • Can I find deals for flights from San Antonio to Key West that include hotel bookings?

    Yes. In addition to deals on San Antonio to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Key West?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Key West.

  • Can I find deals for business class flights from San Antonio to Key West?

    Yes. Cheapflights offers flight deals from San Antonio to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Antonio to Key West?

    Currently, August is the cheapest month in which you can book a flight from San Antonio to Key West (average of $328). Flying from San Antonio to Key West in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for San Antonio to Key West

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from San Antonio to Key West

Discover the top 2 airlines that operate flights from San Antonio to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$223Average$446FlexibilityNo cancel feeOn-time71%
DeltaCheapest$227Average$413FlexibilityNo cancel feeOn-timeN/A

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