$114+ 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — MIA
Jun 27 — Jul 41
Round-trip
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 May 28, 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 May 28, 2026.
This Booking.com deal was found by Cheapflights users on 5/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Fri 9/48:18 pm
MIA
- SAT
1 stop24h 53m
Frontier
Deal found 5/26![Frontier logo]()
$262
This Frontier deal was found by Cheapflights users on 5/27. 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.
Sat 7/48:56 pm
SAT
- MIA
1 stop9h 15m
Frontier
Fri 7/106:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 5/27![Frontier logo]()
$264
This Delta deal was found by Cheapflights users on 5/27. 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 6/165:25 am
SAT
- MIA
1 stop6h 39m
Delta
Wed 7/810:40 am
MIA
- SAT
1 stop7h 49m
Delta
Deal found 5/27![Delta logo]()
$267
This Frontier deal was found by Cheapflights users on 5/28. 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.
Thu 7/237:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Mon 7/276:00 am
MIA
- SAT
1 stop13h 44m
Frontier
Deal found 5/28![Frontier logo]()
$268
This Frontier deal was found by Cheapflights users on 5/27. 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.
Thu 6/187:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Sun 6/216:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/27![Frontier logo]()
$269
This Expedia deal was found by Cheapflights users on 5/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Tue 6/236:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/27![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 5/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Fri 6/196:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/24![Frontier logo]()
$275
This Delta deal was found by Cheapflights users on 5/26. 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 10/166:15 pm
SAT
- MIA
1 stop5h 37m
Delta
Sat 10/248:05 am
MIA
- SAT
1 stop6h 17m
Delta
Deal found 5/26![Delta logo]()
$277
This Frontier deal was found by Cheapflights users on 5/27. 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.
Sat 7/117:49 pm
SAT
- MIA
1 stop8h 28m
Frontier
Sat 7/186:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 5/27![Frontier logo]()
$284
This Frontier deal was found by Cheapflights users on 5/26. 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.
Fri 6/57:54 pm
SAT
- MIA
1 stop8h 39m
Frontier
Wed 6/106:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/26![Frontier logo]()
$285
This Frontier deal was found by Cheapflights users on 5/26. 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.
Fri 5/298:59 pm
SAT
- MIA
1 stop9h 01m
Frontier
Sun 5/316:30 am
MIA
- SAT
1 stop13h 29m
Frontier
Deal found 5/26![Frontier logo]()
$286
This Expedia deal was found by Cheapflights users on 5/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Fri 6/126:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/27![Frontier logo]()
$290
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 May 28, 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 May 28, 2026.
This Delta deal was found by Cheapflights users on 5/27. 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 10/165:30 am
SAT
- MIA
1 stop6h 26m
Delta
Mon 10/197:00 am
MIA
- SAT
1 stop7h 22m
Delta
Deal found 5/27![Delta logo]()
$380
This Southwest deal was found by Cheapflights users on 5/25. 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.
Sat 8/226:10 am
SAT
- MIA
2 stops9h 20m
Southwest
Sat 9/56:30 am
MIA
- SAT
2 stops10h 30m
Southwest
Deal found 5/25![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 5/26. 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 8/117:35 am
SAT
- MIA
1 stop7h 20m
United Airlines
Wed 8/1211:30 am
MIA
- SAT
1 stop7h 13m
United Airlines
Deal found 5/26![United Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 5/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/33:10 pm
SAT
- MIA
2 stops8h 20m
Southwest
Thu 8/65:45 am
MIA
- SAT
2 stops8h 05m
Southwest
Deal found 5/24![Southwest logo]()
$399
This Delta deal was found by Cheapflights users on 5/23. 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.
Fri 10/162:10 pm
SAT
- MIA
1 stop5h 44m
Delta
Sat 10/248:05 am
MIA
- SAT
1 stop8h 23m
Delta
Deal found 5/23![Delta logo]()
$452
This Southwest deal was found by Cheapflights users on 5/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1812:50 pm
SAT
- MIA
2 stops8h 15m
Southwest
Mon 6/225:25 am
MIA
- SAT
1 stop4h 40m
Southwest
Deal found 5/23![Southwest logo]()
$467
This United Airlines deal was found by Cheapflights users on 5/27. 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 6/309:37 am
SAT
- MIA
2 stops11h 50m
United Airlines
Wed 7/88:48 am
MIA
- SAT
1 stop5h 29m
United Airlines
Deal found 5/27![United Airlines logo]()
$556
This Southwest deal was found by Cheapflights users on 5/26. 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.
Fri 8/211:00 pm
SAT
- MIA
2 stops8h 05m
Southwest
Fri 9/45:45 am
MIA
- SAT
2 stops8h 05m
Southwest
Deal found 5/26![Southwest logo]()
$472
This Southwest deal was found by Cheapflights users on 5/26. 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.
Fri 7/1012:50 pm
SAT
- MIA
2 stops8h 20m
Southwest
Fri 7/175:10 am
MIA
- SAT
2 stops6h 45m
Southwest
Deal found 5/26![Southwest logo]()
$507
This Southwest deal was found by Cheapflights users on 5/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/275:20 pm
SAT
- MIA
1 stop4h 20m
Southwest
Sun 7/55:35 pm
MIA
- SAT
2 stops7h 20m
Southwest
Deal found 5/24![Southwest logo]()
$536
This Southwest deal was found by Cheapflights users on 5/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/253:10 pm
SAT
- MIA
2 stops8h 15m
Southwest
Mon 6/295:25 am
MIA
- SAT
2 stops9h 00m
Southwest
Deal found 5/24![Southwest logo]()
$552
Last-minute flights from San Antonio to Key LargoDiscover last-minute flight deals from San Antonio to Key Largo. Data last updated May 28, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Key Largo. Data last updated May 28, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 5/26. 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.
Fri 5/298:59 pm
SAT
- MIA
1 stop9h 01m
Frontier
Sun 5/316:30 am
MIA
- SAT
1 stop13h 29m
Frontier
Deal found 5/26![Frontier logo]()
$286
This Trip.com deal was found by Cheapflights users on 5/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:59 pm
SAT
- MIA
1 stop9h 01m
Frontier
Mon 6/86:30 am
MIA
- SAT
1 stop13h 29m
Frontier
Deal found 5/23![Frontier logo]()
$264
This Frontier deal was found by Cheapflights users on 5/26. 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.
Fri 6/57:54 pm
SAT
- MIA
1 stop8h 39m
Frontier
Wed 6/106:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/26![Frontier logo]()
$285
This Expedia deal was found by Cheapflights users on 5/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Fri 6/126:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/27![Frontier logo]()
$290
This Delta deal was found by Cheapflights users on 5/27. 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 6/124:15 pm
SAT
- MIA
1 stop7h 36m
Delta
Tue 6/166:05 pm
MIA
- SAT
1 stop7h 28m
Delta
Deal found 5/27![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 5/27. 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 6/165:25 am
SAT
- MIA
1 stop6h 39m
Delta
Wed 7/810:40 am
MIA
- SAT
1 stop7h 49m
Delta
Deal found 5/27![Delta logo]()
$267
This Frontier deal was found by Cheapflights users on 5/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Fri 6/196:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/24![Frontier logo]()
$275
This Frontier deal was found by Cheapflights users on 5/27. 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.
Tue 6/167:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Tue 6/236:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/27![Frontier logo]()
$300
This Frontier deal was found by Cheapflights users on 5/27. 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.
Thu 6/187:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Sun 6/216:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/27![Frontier logo]()
$269
This Expedia deal was found by Cheapflights users on 5/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Tue 6/236:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/27![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 5/25. 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.
Sat 6/207:51 pm
SAT
- MIA
1 stop8h 29m
Frontier
Tue 6/236:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/25![Frontier logo]()
$306
This Super.com deal was found by Cheapflights users on 5/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Mon 6/296:00 am
MIA
- SAT
1 stop13h 56m
Frontier
Deal found 5/25![Frontier logo]()
$292
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 May 28, 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 May 28, 2026.
This Super.com deal was found by Cheapflights users on 5/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Deal found 5/27![Frontier logo]()
$114
This Frontier deal was found by Cheapflights users on 5/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:49 pm
SAT
- MIA
1 stop9h 02m
Frontier
Deal found 5/24![Frontier logo]()
$116
This Super.com deal was found by Cheapflights users on 5/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:54 pm
SAT
- MIA
1 stop8h 39m
Frontier
Deal found 5/26![Frontier logo]()
$123
This Super.com deal was found by Cheapflights users on 5/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/67:54 pm
SAT
- MIA
1 stop8h 39m
Frontier
Deal found 5/26![Frontier logo]()
$124
This Frontier deal was found by Cheapflights users on 5/25. 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.
Fri 7/107:49 pm
SAT
- MIA
1 stop9h 02m
Frontier
Deal found 5/25![Frontier logo]()
$125
This Frontier deal was found by Cheapflights users on 5/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:49 pm
SAT
- MIA
1 stop9h 02m
Frontier
Deal found 5/24![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 7/237:49 pm
SAT
- MIA
1 stop9h 02m
Frontier
Deal found 5/27![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 5/28. 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.
Sat 8/227:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Deal found 5/28![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 5/27. 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.
Thu 6/187:51 pm
SAT
- MIA
1 stop9h 03m
Frontier
Deal found 5/27![Frontier logo]()
$134
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 May 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $262 (Booking.com) |
One-way from | $114 (Super.com) |
Popular in | December |
Cheapest in | October |
Average price | $434 |
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 May 28, 2026.
Use the filters below to find and compare flights from San Antonio to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Fri 10/16
5:30 am-12:56 pm
1 stop6h 26m
Miami
Mon 10/19
7:00 am-1:22 pm
1 stop7h 22m
$380
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 8/22
6:10 am-4:30 pm
2 stops9h 20m
Miami
Sat 9/5
6:30 am-4:00 pm
2 stops10h 30m
$399
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Mon 8/3
3:10 pm-12:30 am
2 stops8h 20m
Miami
Thu 8/6
5:45 am-12:50 pm
2 stops8h 05m
$399
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Tue 8/11
7:35 am-3:55 pm
1 stop7h 20m
Miami
Wed 8/12
11:30 am-5:43 pm
1 stop7h 13m
$436
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Fri 10/16
2:10 pm-8:54 pm
1 stop5h 44m
Miami
Sat 10/24
8:05 am-3:28 pm
1 stop8h 23m
$452
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Thu 6/18
12:50 pm-10:05 pm
2 stops8h 15m
Miami
Mon 6/22
5:25 am-9:05 am
1 stop4h 40m
$467
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Fri 8/21
1:00 pm-10:05 pm
2 stops8h 05m
Miami
Fri 9/4
5:45 am-12:50 pm
2 stops8h 05m
$472
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Fri 7/10
12:50 pm-10:10 pm
2 stops8h 20m
Miami
Fri 7/17
5:10 am-10:55 am
2 stops6h 45m
$507
Quickest round-trip
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 6/27
5:20 pm-10:40 pm
1 stop4h 20m
Miami
Sun 7/5
5:35 pm-11:55 pm
2 stops7h 20m
$536
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Thu 6/25
3:10 pm-12:25 am
2 stops8h 15m
Miami
Mon 6/29
5:25 am-1:25 pm
2 stops9h 00m
$552
Showing 1-10 of 22 resultsSorted by cheapest first
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
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 May 28, 2026.
A simple way to save on the total cost of your ticket is to fly from San Antonio to Key Largo in the afternoon. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight at noon.
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 May 28, 2026.
The most flights from SAT to KE9 are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from San Antonio to Key Largo?
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 May 23, 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.
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 May 28, 2026.
Read through reviews of airlines operating flights from San Antonio to Key Largo, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Spirit Airlines
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
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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Alternative routes for San Antonio to Key Largo
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Antonio to Key Largo by cabin class
Find flights from San Antonio to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Antonio and Key Largo flights
Browse other San Antonio and Key Largo flight options. Last updated on May 28, 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 May 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Antonio to Key Largo flights
Consider these flights traveling from San Antonio to Key Largo.
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 May 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$86 | Average$230 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$205 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$137 | Average$378 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$140 | Average$306 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$425 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$198 | Average$423 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$284 | Average$432 | FlexibilityNo cancel fee | On-time69% |