HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key West

$197+ Cheap flights from San Antonio to Key West (SAT - EYW)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — EYW
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Antonio to Key West with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$220
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$259
Provider with most accurate pricing for San Antonio-Key West flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Key West flights.
Search Deals
From San Antonio to Key West
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 8, 2026.

This Delta deal was found by Cheapflights users on 1/6. 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 8/1512:15 pmSAT - EYW
1 stop6h 30mDelta
Sat 8/223:10 pmEYW - SAT
1 stop6h 00mDelta
Deal found 1/6$197
This Kiwi.com deal was found by Cheapflights users on 1/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:00 amSAT - EYW
1 stop5h 26mMultiple Airlines
Fri 2/271:06 pmEYW - SAT
1 stop25h 12mMultiple Airlines
Deal found 1/8$220
This Kiwi.com deal was found by Cheapflights users on 1/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:00 amSAT - EYW
1 stop5h 26mMultiple Airlines
Thu 2/269:46 amEYW - SAT
1 stop28h 26mMultiple Airlines
Deal found 1/8$225
This Delta deal was found by Cheapflights users on 1/6. 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.
Tue 5/1910:45 amSAT - EYW
1 stop7h 59mDelta
Sat 5/236:00 pmEYW - SAT
1 stop7h 14mDelta
Deal found 1/6$249
This United Airlines deal was found by Cheapflights users on 1/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:00 amSAT - EYW
1 stop7h 00mUnited Airlines
Thu 3/264:55 pmEYW - SAT
1 stop7h 02mUnited Airlines
Deal found 1/8$259
This American Airlines deal was found by Cheapflights users on 1/7. 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 4/185:16 amSAT - EYW
1 stop6h 52mAmerican Airlines
Thu 4/234:20 pmEYW - SAT
1 stop7h 39mAmerican Airlines
Deal found 1/7$271
This Kiwi.com deal was found by Cheapflights users on 1/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:00 amSAT - EYW
1 stop5h 26mMultiple Airlines
Mon 3/22:25 pmEYW - SAT
1 stop20h 05mMultiple Airlines
Deal found 1/5$274
This American Airlines deal was found by Cheapflights users on 1/6. 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 4/181:32 pmSAT - EYW
2 stops8h 25mAmerican Airlines
Fri 4/244:20 pmEYW - SAT
1 stop7h 39mAmerican Airlines
Deal found 1/6$276

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 January 8, 2026.
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

Mon 2/23

6:00 am-12:26 pm

1 stop5h 26m

Key West

Fri 2/27

1:06 pm-1:18 pm

1 stop25h 12m

$220

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 2/23

6:00 am-12:26 pm

1 stop5h 26m

Key West

Thu 2/26

9:46 am-1:12 pm

1 stop28h 26m

$225

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 2/23

7:00 am-3:00 pm

1 stop7h 00m

Key West

Thu 3/26

4:55 pm-10:57 pm

1 stop7h 02m

$259

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Fri 2/27

6:00 am-12:26 pm

1 stop5h 26m

Key West

Mon 3/2

2:25 pm-9:30 am

1 stop20h 05m

$274

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 1/22

1:08 pm-11:56 pm

2 stops9h 48m

Key West

Mon 1/26

7:45 pm-11:59 pm

1 stop5h 14m

$314

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 2/23

6:24 am-4:49 pm

2 stops9h 25m

Key West

Thu 3/26

12:02 pm-8:41 pm

1 stop9h 39m

$315

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 4/2

10:26 am-1:37 pm

1 stop26h 11m

Key West

Mon 4/6

9:49 am-12:17 am

2 stops39h 28m

$322

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Wed 1/21

6:30 am-9:26 am

1 stop25h 56m

Key West

Sun 1/25

10:06 am-5:03 pm

2 stops31h 57m

$334

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Thu 4/2

10:26 am-1:37 pm

1 stop26h 11m

Key West

Mon 4/6

2:35 pm-9:22 am

1 stop19h 47m

$347

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 1/12

8:00 pm-10:09 am

3 stops37h 09m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 12 results
1
2

Compare providers for flights from San Antonio to Key West

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Key West in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Antonio-Key West flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-Key West flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Antonio-Key West flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Key West flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

Currently, January is the cheapest month in which you can book a flight from San Antonio to Key West (average of $190). Flying from San Antonio to Key West in December is currently the most expensive (average of $289). 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 January 8, 2026.
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.
Delta
7.9
Good
8,025 reviews

Crew

8.5

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

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.
Delta
7.9
Good
8,025 reviews
Delta
7.9
Good
8,025 reviews

Crew

8.5

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

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.
American Airlines
7.2
Good
11,095 reviews
Delta
7.9
Good
8,025 reviews

Crew

8.5

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

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.

  • How long is the flight from San Antonio to Key West?

    Airlines like United Airlines fly from San Antonio to Key West in about 7h. The time it takes to get you to your destination can typically vary by up to . The distance from San Antonio to Key West is about 1082 mi.

  • What are the cheapest airlines flying from San Antonio to Key West round-trip?

    Delta, at $227, was found to be the cheapest airline from San Antonio to Key West. An alternate airline flying to your destination would be American Airlines. Delta is currently priced 47% 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, January is the cheapest month in which you can book a flight from San Antonio to Key West (average of $190). Flying from San Antonio to Key West in December is currently the most expensive (average of $289). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Antonio to Key West

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Orlando flights
Dallas/Fort Worth to Fort Lauderdale flights
Dallas/Fort Worth to Miami flights
Dallas/Fort Worth to Tampa flights
Hobby to Miami flights
Hobby to Orlando flights
Hobby to Fort Lauderdale flights
Love Field to Miami flights
Austin to Orlando flights
Hobby to Tampa flights
George Bush Intcntl to Miami flights
George Bush Intcntl to Orlando flights
George Bush Intcntl to Fort Lauderdale flights
Love Field to Orlando flights
Austin to Fort Lauderdale flights
Austin to Miami flights
George Bush Intcntl to Tampa flights
Love Field to Fort Lauderdale flights
Dallas/Fort Worth to West Palm Beach flights
Austin to Tampa flights
Love Field to Tampa flights
Dallas/Fort Worth to Jacksonville flights
San Antonio to Miami flights
Dallas/Fort Worth to Fort Myers flights
San Antonio to Orlando flights
Dallas/Fort Worth to Pensacola flights
Hobby to Jacksonville flights
San Antonio to Fort Lauderdale flights
Hobby to West Palm Beach flights
George Bush Intcntl to Jacksonville flights
George Bush Intcntl to West Palm Beach flights
San Antonio to Tampa flights
Dallas/Fort Worth to Panama City flights
Hobby to Fort Myers flights
Austin to Fort Myers flights
Dallas/Fort Worth to Key West flights
George Bush Intcntl to Fort Myers flights
Hobby to Pensacola flights
Love Field to Jacksonville flights
George Bush Intcntl to Pensacola flights
Love Field to Fort Myers flights
Dallas/Fort Worth to Sarasota flights
Love Field to Pensacola flights
Austin to Jacksonville flights
Austin to Panama City flights
Love Field to Panama City flights
Dallas/Fort Worth to Daytona Beach flights
Hobby to Key West flights
Dallas/Fort Worth to Valparaiso flights
Austin to West Palm Beach flights

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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$227Average$418FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$236Average$467FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.