$270+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — EYW
Apr 15 — Apr 221
Round-trip
1 adult, Economy
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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
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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
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Best
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Cheapest flights from San Antonio to Key WestExplore 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 March 16, 2026.
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 March 16, 2026.
This American Airlines deal was found by Cheapflights users on 3/14. 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.
Wed 8/196:29 am
SAT
- EYW
2 stops11h 10m
American Airlines
Sat 8/2212:50 pm
EYW
- SAT
1 stop8h 05m
American Airlines
Deal found 3/14![American Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 3/2510:22 am
SAT
- EYW
2 stops22h 59m
Multiple Airlines
Mon 3/301:06 pm
EYW
- SAT
1 stop25h 17m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 3/14. 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 5/1212:08 pm
SAT
- EYW
1 stop6h 41m
Delta
Tue 5/196:19 pm
EYW
- SAT
1 stop7h 25m
Delta
Deal found 3/14![Delta logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Thu 4/91:22 pm
SAT
- EYW
1 stop22h 04m
Multiple Airlines
Mon 4/132:35 pm
EYW
- SAT
1 stop19h 52m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$286
This American Airlines deal was found by Cheapflights users on 3/11. 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.
Thu 5/75:09 pm
SAT
- EYW
1 stop4h 49m
American Airlines
Sun 5/107:30 pm
EYW
- SAT
1 stop5h 26m
American Airlines
Deal found 3/11![American Airlines logo]()
$299
This American Airlines deal was found by Cheapflights users on 3/14. 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.
Sun 8/235:06 am
SAT
- EYW
1 stop4h 46m
American Airlines
Sat 8/2911:26 am
EYW
- SAT
1 stop7h 17m
American Airlines
Deal found 3/14![American Airlines logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Wed 3/2510:22 am
SAT
- EYW
2 stops22h 59m
Multiple Airlines
Sun 3/299:46 am
EYW
- SAT
1 stop28h 37m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sat 3/212:40 pm
SAT
- EYW
1 stop17h 26m
Multiple Airlines
Sun 3/2911:01 am
EYW
- SAT
2 stops23h 26m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$322
Best flights from San Antonio to Key WestDiscover carefully curated flight deals from San Antonio to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 16, 2026.
Discover carefully curated flight deals from San Antonio to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 16, 2026.
This Delta deal was found by Cheapflights users on 3/14. 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 5/1212:08 pm
SAT
- EYW
1 stop6h 41m
Delta
Tue 5/196:19 pm
EYW
- SAT
1 stop7h 25m
Delta
Deal found 3/14![Delta logo]()
$285
This American Airlines deal was found by Cheapflights users on 3/13. 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.
Mon 4/206:10 am
SAT
- EYW
1 stop8h 30m
American Airlines
Sat 4/254:53 pm
EYW
- SAT
1 stop7h 12m
American Airlines
Deal found 3/13![American Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 3/11. 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.
Fri 4/101:37 pm
SAT
- EYW
1 stop5h 04m
Delta
Fri 4/172:40 pm
EYW
- SAT
1 stop6h 50m
Delta
Deal found 3/11![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 3/11. 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.
Fri 6/126:00 am
SAT
- EYW
1 stop9h 07m
American Airlines
Wed 6/177:40 pm
EYW
- SAT
1 stop5h 22m
American Airlines
Deal found 3/11![American Airlines logo]()
$474
This Delta deal was found by Cheapflights users on 3/15. 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.
Fri 4/31:37 pm
SAT
- EYW
1 stop5h 04m
Delta
Mon 4/66:25 pm
EYW
- SAT
1 stop7h 13m
Delta
Deal found 3/15![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 3/11. 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.
Thu 5/2812:08 pm
SAT
- EYW
1 stop6h 41m
Delta
Mon 6/16:19 pm
EYW
- SAT
1 stop7h 25m
Delta
Deal found 3/11![Delta logo]()
$479
This Delta deal was found by Cheapflights users on 3/13. 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.
Wed 6/310:52 am
SAT
- EYW
1 stop7h 57m
Delta
Sun 6/76:00 pm
EYW
- SAT
1 stop7h 14m
Delta
Deal found 3/13![Delta logo]()
$503
Last-minute flights from San Antonio to Key WestDiscover last-minute flight deals from San Antonio to Key West. Data last updated March 16, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Key West. Data last updated March 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sat 3/212:40 pm
SAT
- EYW
1 stop17h 26m
Multiple Airlines
Sun 3/2911:01 am
EYW
- SAT
2 stops23h 26m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 3/2510:22 am
SAT
- EYW
2 stops22h 59m
Multiple Airlines
Mon 3/301:06 pm
EYW
- SAT
1 stop25h 17m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Wed 3/2510:22 am
SAT
- EYW
2 stops22h 59m
Multiple Airlines
Sun 3/299:46 am
EYW
- SAT
1 stop28h 37m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Thu 4/91:22 pm
SAT
- EYW
1 stop22h 04m
Multiple Airlines
Mon 4/132:35 pm
EYW
- SAT
1 stop19h 52m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 3/11. 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.
Fri 4/101:37 pm
SAT
- EYW
1 stop5h 04m
Delta
Fri 4/172:40 pm
EYW
- SAT
1 stop6h 50m
Delta
Deal found 3/11![Delta logo]()
$359
This Mytrip deal was found by Cheapflights users on 3/12. 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 4/206:00 am
SAT
- EYW
1 stop6h 35m
Spirit Airlines
Fri 4/242:30 pm
EYW
- SAT
1 stop10h 21m
Spirit Airlines
Deal found 3/12![Spirit Airlines logo]()
$339
One-way flights from San Antonio to Key WestSearch for one-way flight options from San Antonio to Key West. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
Search for one-way flight options from San Antonio to Key West. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
This American Airlines deal was found by Cheapflights users on 3/11. 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.
Tue 8/185:06 am
SAT
- EYW
1 stop4h 46m
American Airlines
Deal found 3/11![American Airlines logo]()
$301
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Tue 8/185:57 pm
SAT
- EYW
3 stops18h 37m
United Airlines
Deal found 3/11![United Airlines logo]()
$577
Find 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 March 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $270 (American Airlines) |
Popular in | March |
Cheapest in | August |
Average price | $665 |
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 March 16, 2026.
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
Cheapest round-trip
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Tue 5/12
12:08 pm-7:49 pm
1 stop6h 41m
Key West
Tue 5/19
6:19 pm-12:44 am
1 stop7h 25m
$285
Quickest round-trip
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Fri 4/10
1:37 pm-7:41 pm
1 stop5h 04m
Key West
Fri 4/17
2:40 pm-8:30 pm
1 stop6h 50m
$359
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Mon 4/20
6:10 am-3:40 pm
1 stop8h 30m
Key West
Sat 4/25
4:53 pm-11:05 pm
1 stop7h 12m
$397
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Fri 4/3
1:37 pm-7:41 pm
1 stop5h 04m
Key West
Mon 4/6
6:25 pm-12:38 am
1 stop7h 13m
$439
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Fri 6/12
6:00 am-4:07 pm
1 stop9h 07m
Key West
Wed 6/17
7:40 pm-12:02 am
1 stop5h 22m
$474
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Thu 5/28
12:08 pm-7:49 pm
1 stop6h 41m
Key West
Mon 6/1
6:19 pm-12:44 am
1 stop7h 25m
$479
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Wed 6/3
10:52 am-7:49 pm
1 stop7h 57m
Key West
Sun 6/7
6:00 pm-12:14 am
1 stop7h 14m
$503
Cheapest one-way
Quickest one-way
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Tue 8/18
5:06 am-10:52 am
1 stop4h 46m
$301
San AntonioKey West
SAT - EYW
SATEYW
San Antonio
Tue 8/18
5:57 pm-1:34 pm
3 stops18h 37m
$577
Sorted by cheapest first
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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Antonio-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Key West flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
SAT-EYW
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 $126). Flying from San Antonio to Key West in December is currently the most expensive (average of $290). 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.
How much does it cost to fly round-trip from San Antonio to Key West?
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 March 16, 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.
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
2.0
MediocreJoseph,Aug 2023
MSP - MCO
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
2.0
MediocreJoseph,Aug 2023
MSP - MCO
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
2.0
MediocreJoseph,Aug 2023
MSP - MCO
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.
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Complete your trip
Complete your trip to Key West by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from San Antonio to Key West, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Key West
Explore flights to Key West departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 16, 2026.
San Antonio and Key West flights
Browse other San Antonio and Key West flight options. Last updated on March 16, 2026.
Other flights from San Antonio
Browse through other flights departing from San Antonio. Flights are based on user searches made on Cheapflights and were last updated on March 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 March 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$227 | Average$351 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$437 | FlexibilityNo cancel fee | On-time71% |