$66+ Cheap flights from San Antonio (SAT) to Key Largo, FL
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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — MIA
maalis 15 — maalis 221
1 adult, Economy
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Find cheap flights from San Antonio to Key Largo 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.Cheapflights Tip: The best prices from San Antonio to Key Largo are usually found in October or September, booked 25 days in advance, depart on a Friday or Thursday and return on a Thursday
Cheap flight deals from San Antonio to Key Largo
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Antonio to Key LargoExplore the most affordable flight options available from San Antonio to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on helmikuu 13, 2026.
Explore the most affordable flight options available from San Antonio to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on helmikuu 13, 2026.
This Frontier deal was found by Cheapflights users on 2/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 2/278:22 pm
SAT
- MIA
1 stop7h 52m
Frontier
to 3/56:45 am
MIA
- SAT
1 stop13h 45m
Frontier
Deal found 2/8![Frontier logo]()
$210
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 4/215:20 am
SAT
- MIA
1 stop7h 52m
Delta
ti 4/288:04 am
MIA
- SAT
1 stop8h 45m
Delta
Deal found 2/12![Delta logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
pe 2/278:22 pm
SAT
- MIA
2 stops14h 54m
Multiple Airlines
su 3/17:05 am
MIA
- SAT
1 stop10h 14m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 2/9. 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.
ke 3/185:10 am
SAT
- MIA
1 stop8h 00m
Delta
ke 3/256:00 am
MIA
- SAT
1 stop6h 29m
Delta
Deal found 2/9![Delta logo]()
$219
This Mytrip deal was found by Cheapflights users on 2/9. 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.
ti 3/310:26 am
SAT
- MIA
2 stops24h 50m
Spirit Airlines
ti 3/107:05 am
MIA
- SAT
3 stops27h 25m
Spirit Airlines
Deal found 2/9![Spirit Airlines logo]()
$220
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 4/85:25 am
SAT
- MIA
Nonstop2h 49m
American Airlines
ma 4/138:59 pm
MIA
- SAT
Nonstop3h 16m
American Airlines
Deal found 2/12![American Airlines logo]()
$221
This Frontier deal was found by Cheapflights users on 2/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 2/256:12 pm
SAT
- MIA
1 stop10h 02m
Frontier
ma 3/25:05 am
MIA
- SAT
1 stop12h 15m
Frontier
Deal found 2/11![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
su 3/2910:05 am
SAT
- MIA
2 stops47h 12m
Multiple Airlines
to 4/212:55 pm
MIA
- SAT
1 stop29h 10m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$226
This Delta deal was found by Cheapflights users on 2/11. 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.
ke 4/225:20 am
SAT
- MIA
1 stop5h 51m
Delta
ti 4/286:15 pm
MIA
- SAT
1 stop7h 15m
Delta
Deal found 2/11![Delta logo]()
$227
This Delta deal was found by Cheapflights users on 2/10. 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.
ti 4/75:10 am
SAT
- MIA
1 stop5h 59m
Delta
ti 4/141:16 pm
MIA
- SAT
1 stop5h 33m
Delta
Deal found 2/10![Delta logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
to 3/56:00 am
SAT
- MIA
2 stops17h 42m
Multiple Airlines
ma 3/95:05 am
MIA
- SAT
1 stop10h 36m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$230
Best flights from San Antonio to Key LargoDiscover carefully curated flight deals from San Antonio to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated helmikuu 13, 2026.
Discover carefully curated flight deals from San Antonio to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated helmikuu 13, 2026.
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 4/225:20 am
SAT
- MIA
1 stop7h 52m
Delta
ke 4/298:04 am
MIA
- SAT
1 stop8h 45m
Delta
Deal found 2/12![Delta logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
to 3/510:26 am
SAT
- MIA
2 stops13h 48m
Multiple Airlines
la 3/75:50 am
MIA
- SAT
1 stop19h 27m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$236
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 3/175:25 am
SAT
- MIA
1 stop8h 00m
Southwest
ke 3/1812:40 pm
MIA
- SAT
1 stop10h 50m
Southwest
Deal found 2/11![Southwest logo]()
$259
This Frontier deal was found by Cheapflights users on 2/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 2/278:22 pm
SAT
- MIA
1 stop7h 52m
Frontier
to 3/56:45 am
MIA
- SAT
1 stop13h 45m
Frontier
Deal found 2/11![Frontier logo]()
$270
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 5/65:25 am
SAT
- MIA
Nonstop2h 49m
American Airlines
la 5/168:59 pm
MIA
- SAT
Nonstop3h 16m
American Airlines
Deal found 2/12![American Airlines logo]()
$272
This Delta deal was found by Cheapflights users on 2/10. 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.
ke 4/226:20 am
SAT
- MIA
1 stop6h 52m
Delta
ti 4/286:15 pm
MIA
- SAT
1 stop7h 15m
Delta
Deal found 2/10![Delta logo]()
$227
This Delta deal was found by Cheapflights users on 2/10. 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.
ke 4/85:10 am
SAT
- MIA
1 stop5h 59m
Delta
ke 4/156:15 pm
MIA
- SAT
1 stop7h 15m
Delta
Deal found 2/10![Delta logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
la 3/142:40 pm
SAT
- MIA
2 stops18h 39m
Frontier
ke 3/185:50 am
MIA
- SAT
1 stop19h 27m
Frontier
Deal found 2/11![Frontier logo]()
$281
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 4/205:20 am
SAT
- MIA
1 stop7h 52m
Delta
ti 4/286:15 pm
MIA
- SAT
1 stop7h 15m
Delta
Deal found 2/12![Delta logo]()
$240
This Southwest deal was found by Cheapflights users on 2/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 3/289:55 am
SAT
- MIA
1 stop8h 10m
Southwest
ti 3/316:40 pm
MIA
- SAT
1 stop6h 30m
Southwest
Deal found 2/10![Southwest logo]()
$291
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 4/255:20 am
SAT
- MIA
1 stop5h 51m
Delta
ke 4/292:45 pm
MIA
- SAT
1 stop7h 45m
Delta
Deal found 2/12![Delta logo]()
$240
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 4/15:10 am
SAT
- MIA
1 stop5h 59m
Delta
ma 4/64:44 pm
MIA
- SAT
1 stop6h 46m
Delta
Deal found 2/12![Delta logo]()
$269
Last-minute flights from San Antonio to Key LargoDiscover last-minute flight deals from San Antonio to Key Largo. Data last updated helmikuu 13, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Key Largo. Data last updated helmikuu 13, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 2/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 2/256:12 pm
SAT
- MIA
1 stop10h 02m
Frontier
ma 3/25:05 am
MIA
- SAT
1 stop12h 15m
Frontier
Deal found 2/12![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 2/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 2/268:20 pm
SAT
- MIA
1 stop7h 54m
Frontier
ke 3/46:25 am
MIA
- SAT
1 stop11h 50m
Frontier
Deal found 2/9![Frontier logo]()
$235
This Frontier deal was found by Cheapflights users on 2/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 2/278:22 pm
SAT
- MIA
1 stop7h 52m
Frontier
to 3/56:45 am
MIA
- SAT
1 stop13h 45m
Frontier
Deal found 2/8![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
pe 2/278:22 pm
SAT
- MIA
2 stops14h 54m
Multiple Airlines
su 3/17:05 am
MIA
- SAT
1 stop10h 14m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$218
This Mytrip deal was found by Cheapflights users on 2/9. 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.
ti 3/310:26 am
SAT
- MIA
2 stops24h 50m
Spirit Airlines
ti 3/107:05 am
MIA
- SAT
3 stops27h 25m
Spirit Airlines
Deal found 2/9![Spirit Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
to 3/510:26 am
SAT
- MIA
2 stops24h 14m
Multiple Airlines
ma 3/95:05 am
MIA
- SAT
1 stop10h 36m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
to 3/510:26 am
SAT
- MIA
2 stops13h 48m
Multiple Airlines
la 3/75:50 am
MIA
- SAT
1 stop19h 27m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 2/9. 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.
ke 3/185:10 am
SAT
- MIA
1 stop8h 00m
Delta
ke 3/256:00 am
MIA
- SAT
1 stop6h 29m
Delta
Deal found 2/9![Delta logo]()
$219
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 3/285:00 am
SAT
- MIA
Nonstop2h 51m
American Airlines
ti 3/319:34 pm
MIA
- SAT
Nonstop3h 25m
American Airlines
Deal found 2/12![American Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
su 3/2910:05 am
SAT
- MIA
2 stops47h 12m
Multiple Airlines
to 4/212:55 pm
MIA
- SAT
1 stop29h 10m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$226
One-way flights from San Antonio to Key LargoSearch for one-way flight options from San Antonio to Key Largo. Find affordable one-way fares based on user searches. Data last updated helmikuu 13, 2026.
Search for one-way flight options from San Antonio to Key Largo. Find affordable one-way fares based on user searches. Data last updated helmikuu 13, 2026.
This Trip.com deal was found by Cheapflights users on 2/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 3/35:36 pm
SAT
- MIA
1 stop10h 38m
Frontier
Deal found 2/11![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 2/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 5/133:14 pm
SAT
- MIA
1 stop12h 51m
Frontier
Deal found 2/9![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 2/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/53:14 pm
SAT
- MIA
1 stop12h 51m
Frontier
Deal found 2/11![Frontier logo]()
$72
This Trip.com deal was found by Cheapflights users on 2/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
su 3/15:04 pm
SAT
- MIA
1 stop6h 38m
Frontier
Deal found 2/9![Frontier logo]()
$74
This Mytrip deal was found by Cheapflights users on 2/10. 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.
ti 3/310:26 am
SAT
- MIA
2 stops24h 50m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
ke 5/63:14 pm
SAT
- MIA
1 stop12h 51m
Frontier
Deal found 2/11![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
ti 4/143:14 pm
SAT
- MIA
1 stop12h 51m
Frontier
Deal found 2/10![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
ma 3/93:36 pm
SAT
- MIA
1 stop8h 11m
Frontier
Deal found 2/12![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
la 4/253:34 pm
SAT
- MIA
1 stop12h 31m
Frontier
Deal found 2/9![Frontier logo]()
$84
Find flight deals from San Antonio to Key Largo
Keep the following information in mind while searching for San Antonio to Key Largo flight deals. Data was last updated helmikuu 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Delta) |
One-way from | $66 (Trip.com) |
Popular in | December |
Cheapest in | October |
Average price | $390 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to Key Largo 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 helmikuu 13, 2026.
Use the filters below to find and compare flights from San Antonio to Key Largo that are best for you.
Fly from
San Antonio
Fly to
Key Largo
Route
Depart
Return
Price
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
ke 4/22
5:20 am-2:12 pm
1 stop7h 52m
Miami
ke 4/29
8:04 am-3:49 pm
1 stop8h 45m
$217
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
ke 4/22
6:20 am-2:12 pm
1 stop6h 52m
Miami
ti 4/28
6:15 pm-12:30 am
1 stop7h 15m
$227
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
ke 4/8
5:10 am-12:09 pm
1 stop5h 59m
Miami
ke 4/15
6:15 pm-12:30 am
1 stop7h 15m
$228
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
to 3/5
10:26 am-1:14 am
2 stops13h 48m
Miami
la 3/7
5:50 am-12:17 am
1 stop19h 27m
$236
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
ma 4/20
5:20 am-2:12 pm
1 stop7h 52m
Miami
ti 4/28
6:15 pm-12:30 am
1 stop7h 15m
$240
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
la 4/25
5:20 am-12:11 pm
1 stop5h 51m
Miami
ke 4/29
2:45 pm-9:30 pm
1 stop7h 45m
$240
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
ti 3/17
5:25 am-2:25 pm
1 stop8h 00m
Miami
ke 3/18
12:40 pm-10:30 pm
1 stop10h 50m
$259
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
ke 4/1
5:10 am-12:09 pm
1 stop5h 59m
Miami
ma 4/6
4:44 pm-10:30 pm
1 stop6h 46m
$269
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
pe 2/27
8:22 pm-5:14 am
1 stop7h 52m
Miami
to 3/5
6:45 am-7:30 pm
1 stop13h 45m
$270
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
ke 5/6
5:25 am-9:14 am
Nonstop2h 49m
Miami
la 5/16
8:59 pm-11:15 pm
Nonstop3h 16m
$272
Showing 1-10 of 19 results
Best time to book a flight from San Antonio to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from San Antonio with our price prediction graph.
SAT-MIA
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 Largo
SAT-KE9
SAT-MIA
How far ahead should I book a flight from San Antonio to Key Largo?
Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Key Largo. Price data was last updated on February 6, 2026.
The price you pay for your flight from San Antonio to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 25 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from San Antonio to Key Largo?
Currently, January is the cheapest month in which you can book a flight from San Antonio to Key Largo (average of $50). Flying from San Antonio to Key Largo in June is currently the most expensive (average of $105). 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.
What is the cheapest time of day to fly from SAT to KE9?
Find hourly flight availability from San Antonio to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated helmikuu 13, 2026.
A simple way to save on the total cost of your ticket is to fly from San Antonio to Key Largo in the evening. If you’re flexible enough to do this you can expect to save up to 49% on your trip compared to booking a flight at noon.
What is the cheapest day to fly from San Antonio to Key Largo?
Use this chart to determine the cheapest time to fly round-trip from San Antonio to Key Largo. Price data was last updated on February 7, 2026.
Travelers seeking maximum savings on their San Antonio to Key Largo flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from San Antonio to Key Largo
Explore weekly flight availability from San Antonio to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated helmikuu 13, 2026.
The most flights from SAT to KE9 are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
Reviews of airlines servicing Key Largo
Get insights into the airlines that provide service to Key Largo. 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 Largo. Reviews last updated helmikuu 13, 2026.
Read through reviews of airlines operating flights from San Antonio to Key Largo, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Related info for your journey
Find useful and relevant information for your journey from San Antonio to Key Largo. 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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San Antonio and Key Largo flights
Browse other San Antonio and Key Largo flight options. Last updated on helmikuu 13, 2026.
Other flights from San Antonio
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Top 7 airlines flying from San Antonio to Key Largo
Discover the top 7 airlines that operate flights from San Antonio to Key Largo. 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 helmikuu 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$86 | Average$195 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$91 | Average$194 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$137 | Average$355 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$140 | Average$400 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$407 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$198 | Average$418 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$286 | Average$446 | FlexibilityNo cancel fee | On-time69% |