$159+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — EYW
Oct 24 — Oct 311
Round-trip
1 adult, Economy
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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
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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 September 24, 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 September 24, 2026.
This American Airlines deal was found by Cheapflights users on 9/20. 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 11/148:01 am -
1 stop7h 54m
Sat 12/54:56 pm -
1 stop6h 28m
Deal found 9/20![American Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/159:25 am -
2 stops23h 54m
Sun 10/1810:59 am -
1 stop23h 09m
Deal found 9/20![Multiple Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 9/20. 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 11/101:44 pm -
1 stop5h 16m
Sat 11/146:08 pm -
1 stop6h 24m
Deal found 9/20![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 9/20. 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 9/226:35 am -
1 stop5h 18m
Tue 9/296:19 pm -
1 stop6h 49m
Deal found 9/20![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 9/20. 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 10/610:48 am -
1 stop8h 13m
Sat 10/1011:51 am -
1 stop6h 23m
Deal found 9/20![Delta logo]()
$479
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 11/199:25 am -
1 stop24h 54m
Mon 11/2310:59 am -
2 stops35h 17m
Deal found 9/23![Multiple Airlines logo]()
$481
This American Airlines deal was found by Cheapflights users on 9/20. 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 9/225:14 am -
1 stop7h 03m
Tue 9/291:47 pm -
2 stops9h 12m
Deal found 9/20![American Airlines logo]()
$528
This Delta deal was found by Cheapflights users on 9/23. 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 11/191:44 pm -
1 stop5h 16m
Mon 11/236:08 pm -
1 stop7h 25m
Deal found 9/23![Delta logo]()
$529
This American Airlines deal was found by Cheapflights users on 9/20. 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 10/65:00 am -
2 stops8h 36m
Sat 10/105:28 pm -
1 stop5h 31m
Deal found 9/20![American Airlines logo]()
$592
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 September 24, 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 September 24, 2026.
This Delta deal was found by Cheapflights users on 9/21. 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 1/2610:45 am -
1 stop7h 58m
Tue 2/26:00 pm -
1 stop5h 27m
Deal found 9/21![Delta logo]()
$349
This American Airlines deal was found by Cheapflights users on 9/22. 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 1/511:57 am -
1 stop5h 49m
Sat 1/96:01 pm -
1 stop6h 49m
Deal found 9/22![American Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 9/20. 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 10/610:48 am -
1 stop8h 13m
Sat 10/1011:51 am -
1 stop6h 23m
Deal found 9/20![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 9/22. 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 1/46:04 am -
1 stop9h 00m
Sat 1/99:58 am -
2 stops11h 00m
Deal found 9/22![American Airlines logo]()
$498
This Delta deal was found by Cheapflights users on 9/23. 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 11/191:44 pm -
1 stop5h 16m
Mon 11/236:08 pm -
1 stop7h 25m
Deal found 9/23![Delta logo]()
$529
This American Airlines deal was found by Cheapflights users on 9/20. 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 10/65:00 am -
2 stops7h 35m
Sat 10/101:43 pm -
2 stops10h 14m
Deal found 9/20![American Airlines logo]()
$739
This Delta deal was found by Cheapflights users on 9/24. 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.
Mon 10/265:30 am -
1 stop6h 23m
Fri 10/302:00 pm -
1 stop6h 48m
Deal found 9/24![Delta logo]()
$691
This Delta deal was found by Cheapflights users on 9/23. 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 10/2210:48 am -
1 stop8h 13m
Mon 10/266:10 pm -
1 stop7h 23m
Deal found 9/23![Delta logo]()
$744
This Delta deal was found by Cheapflights users on 9/21. 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 11/45:30 am -
1 stop7h 50m
Mon 11/96:08 pm -
1 stop7h 25m
Deal found 9/21![Delta logo]()
$861
Last-minute flights from San Antonio to Key WestDiscover last-minute flight deals from San Antonio to Key West. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Key West. Data last updated September 24, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/20. 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 10/610:48 am -
1 stop8h 13m
Sat 10/1011:51 am -
1 stop6h 23m
Deal found 9/20![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 9/20. 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 10/65:00 am -
2 stops8h 36m
Sat 10/105:28 pm -
1 stop5h 31m
Deal found 9/20![American Airlines logo]()
$592
This American Airlines deal was found by Cheapflights users on 9/22. 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 10/67:25 am -
1 stop7h 46m
Fri 10/912:48 pm -
1 stop8h 36m
Deal found 9/22![American Airlines logo]()
$814
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/159:25 am -
2 stops23h 54m
Sun 10/1810:59 am -
1 stop23h 09m
Deal found 9/20![Multiple Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 9/23. 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 10/2210:48 am -
1 stop8h 13m
Mon 10/266:10 pm -
1 stop7h 23m
Deal found 9/23![Delta logo]()
$744
This Delta deal was found by Cheapflights users on 9/24. 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.
Mon 10/265:30 am -
1 stop6h 23m
Fri 10/302:00 pm -
1 stop6h 48m
Deal found 9/24![Delta logo]()
$691
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/266:37 am -
1 stop7h 52m
Fri 10/302:51 pm -
2 stops31h 02m
Deal found 9/24![United Airlines logo]()
$728
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 September 24, 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 September 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 11/1612:38 pm -
2 stops22h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Breeze Airways logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 12/39:25 am -
1 stop24h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Breeze Airways logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/19:25 am -
2 stops23h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Breeze Airways logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 12/38:41 pm -
3 stops36h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 9/308:20 pm -
2 stops34h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 9/23. 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 11/166:34 am -
1 stop7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![United Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/19:25 am -
3 stops22h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$557
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 September 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (American Airlines) |
One-way from | $159 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $443 |
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 7,457,451 searches. Data last updated September 24, 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 San Antonio - EYW Key West
SATEYW
San Antonio
Mon 11/16
12:38 pm-9:24 am
3 stops43h 46m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Thu 12/3
9:25 am-11:19 am
1 stop24h 54m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$228
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Thu 10/1
9:25 am-10:19 am
2 stops23h 54m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$243
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Thu 12/3
8:41 pm-10:04 am
3 stops36h 23m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$247
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Wed 9/30
8:20 pm-7:44 am
2 stops34h 24m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$265
Quickest round-trip
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Mon 11/16
6:34 am-3:29 pm
1 stop7h 55m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$319
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Tue 1/26
10:45 am-7:43 pm
1 stop7h 58m
Key West
Tue 2/2
6:00 pm-10:27 pm
1 stop5h 27m
$349
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Tue 1/5
11:57 am-6:46 pm
1 stop5h 49m
Key West
Sat 1/9
6:01 pm-11:50 pm
1 stop6h 49m
$404
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Tue 10/6
10:48 am-8:01 pm
1 stop8h 13m
Key West
Sat 10/10
11:51 am-5:14 pm
1 stop6h 23m
$479
San AntonioKey West
SAT San Antonio - EYW Key West
SATEYW
San Antonio
Mon 1/4
6:04 am-4:04 pm
1 stop9h 00m
Key West
Sat 1/9
9:58 am-7:58 pm
2 stops11h 00m
$498
Showing 1-10 of 16 resultsSorted 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | 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
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 September 24, 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.
Food
7.2
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Food
7.2
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Food
7.2
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
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
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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 September 24, 2026.
San Antonio and Key West flights
Browse other San Antonio and Key West flight options. Last updated on September 24, 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 September 24, 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 7,457,451 searches. Data last updated September 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$237 | Average$438 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$264 | Average$423 | FlexibilityNo cancel fee | On-timeN/A |