$70+ Cheap flights from Key Largo, FL to San Antonio (SAT)
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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SAT
Mar 15 — Mar 221
1 adult, Economy
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Find cheap flights from Key Largo to San Antonio 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 Key Largo to San Antonio are usually found in January or August, booked 73 days in advance, depart on a Thursday or Wednesday and return on a Friday
Cheap flight deals from Key Largo to San Antonio
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Last-minute
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Cheapest flights from Key Largo to San AntonioExplore the most affordable flight options available from Key Largo to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
Explore the most affordable flight options available from Key Largo to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
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.
Tue 4/217:50 am
MIA
- SAT
1 stop31h 29m
Frontier
Sat 4/253:34 pm
SAT
- MIA
1 stop12h 31m
Frontier
Deal found 2/11![Frontier logo]()
$155
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.
Sat 2/287:09 pm
MIA
- SAT
1 stop22h 10m
Multiple Airlines
Tue 3/310:26 am
SAT
- MIA
2 stops13h 16m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$159
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.
Tue 5/1212:26 pm
MIA
- SAT
2 stops26h 53m
Frontier
Sat 5/163:34 pm
SAT
- MIA
1 stop12h 31m
Frontier
Deal found 2/10![Frontier logo]()
$169
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:05 am
MIA
- SAT
1 stop13h 00m
Frontier
Tue 4/143:14 pm
SAT
- MIA
1 stop12h 51m
Frontier
Deal found 2/12![Frontier logo]()
$180
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.
Sat 3/75:50 am
MIA
- SAT
1 stop19h 27m
Multiple Airlines
Wed 3/116:00 am
SAT
- MIA
2 stops17h 47m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$188
This CheapOair deal was found by Cheapflights users on 2/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
MIA
- SAT
1 stop18h 19m
Frontier
Sun 4/126:45 am
SAT
- MIA
1 stop22h 04m
Frontier
Deal found 2/13![Frontier logo]()
$191
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.
Wed 2/2512:55 pm
MIA
- SAT
1 stop9h 15m
Southwest
Sat 2/284:30 pm
SAT
- MIA
1 stop4h 45m
Southwest
Deal found 2/11![Southwest logo]()
$195
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:35 pm
MIA
- SAT
1 stop5h 15m
Southwest
Sun 4/512:50 pm
SAT
- MIA
1 stop4h 10m
Southwest
Deal found 2/9![Southwest logo]()
$197
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:50 am
MIA
- SAT
1 stop9h 29m
Frontier
Thu 5/143:14 pm
SAT
- MIA
1 stop12h 51m
Frontier
Deal found 2/10![Frontier logo]()
$201
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:30 am
MIA
- SAT
2 stops9h 50m
Southwest
Sun 4/512:50 pm
SAT
- MIA
1 stop4h 10m
Southwest
Deal found 2/9![Southwest logo]()
$202
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.
Tue 3/37:05 am
MIA
- SAT
2 stops17h 54m
Spirit Airlines
Wed 3/410:26 am
SAT
- MIA
2 stops24h 50m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$206
Best flights from Key Largo to San AntonioDiscover carefully curated flight deals from Key Largo to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
Discover carefully curated flight deals from Key Largo to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
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.
Sat 3/75:50 am
MIA
- SAT
1 stop19h 27m
Multiple Airlines
Tue 3/1010:26 am
SAT
- MIA
2 stops13h 21m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$188
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:45 am
MIA
- SAT
1 stop12h 37m
Frontier
Tue 3/316:45 am
SAT
- MIA
1 stop21h 53m
Frontier
Deal found 2/10![Frontier logo]()
$191
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:40 pm
MIA
- SAT
1 stop6h 30m
Southwest
Sun 4/512:50 pm
SAT
- MIA
1 stop4h 10m
Southwest
Deal found 2/9![Southwest logo]()
$197
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.
Thu 4/98:59 pm
MIA
- SAT
Nonstop3h 16m
American Airlines
Wed 4/155:25 am
SAT
- MIA
Nonstop2h 49m
American Airlines
Deal found 2/12![American Airlines logo]()
$211
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.
Thu 4/912:59 pm
MIA
- SAT
1 stop9h 48m
Delta
Wed 4/1511:50 am
SAT
- MIA
1 stop9h 00m
Delta
Deal found 2/12![Delta logo]()
$240
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:12 pm
MIA
- SAT
2 stops19h 15m
Spirit Airlines
Sat 3/2810:22 am
SAT
- MIA
2 stops8h 45m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$241
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.
Tue 3/312:55 pm
MIA
- SAT
1 stop11h 10m
Southwest
Wed 3/410:10 am
SAT
- MIA
1 stop7h 25m
Southwest
Deal found 2/10![Southwest logo]()
$210
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
MIA
- SAT
1 stop18h 19m
Frontier
Sun 4/126:45 am
SAT
- MIA
1 stop22h 04m
Frontier
Deal found 2/12![Frontier logo]()
$212
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.
Wed 3/259:34 pm
MIA
- SAT
Nonstop3h 25m
American Airlines
Sat 3/285:00 am
SAT
- MIA
Nonstop2h 51m
American Airlines
Deal found 2/12![American Airlines logo]()
$221
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.
Wed 3/46:25 am
MIA
- SAT
1 stop11h 50m
Frontier
Sun 3/86:45 am
SAT
- MIA
2 stops32h 44m
Frontier
Deal found 2/11![Frontier logo]()
$216
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.
Thu 4/912:59 pm
MIA
- SAT
1 stop9h 48m
Delta
Tue 4/286:39 am
SAT
- MIA
1 stop10h 27m
Delta
Deal found 2/12![Delta logo]()
$240
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:50 am
MIA
- SAT
1 stop9h 29m
Frontier
Mon 4/2712:46 pm
SAT
- MIA
1 stop17h 46m
Frontier
Deal found 2/11![Frontier logo]()
$222
Last-minute flights from Key Largo to San AntonioDiscover last-minute flight deals from Key Largo to San Antonio. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to San Antonio. Data last updated February 13, 2026 and is based on user searches.
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.
Fri 2/205:05 am
MIA
- SAT
1 stop12h 10m
Multiple Airlines
Mon 2/235:04 pm
SAT
- MIA
1 stop18h 12m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$214
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.
Sat 2/216:25 am
MIA
- SAT
1 stop13h 36m
Frontier
Mon 2/235:04 pm
SAT
- MIA
1 stop6h 38m
Frontier
Deal found 2/9![Frontier logo]()
$201
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.
Wed 2/2512:55 pm
MIA
- SAT
1 stop9h 15m
Southwest
Sat 2/284:30 pm
SAT
- MIA
1 stop4h 45m
Southwest
Deal found 2/11![Southwest logo]()
$195
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:45 am
MIA
- SAT
1 stop13h 40m
Frontier
Sun 3/15:04 pm
SAT
- MIA
1 stop6h 38m
Frontier
Deal found 2/12![Frontier logo]()
$180
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.
Sat 2/287:09 pm
MIA
- SAT
1 stop22h 10m
Multiple Airlines
Tue 3/310:26 am
SAT
- MIA
2 stops13h 16m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$159
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:45 am
MIA
- SAT
1 stop12h 37m
Frontier
Tue 3/316:45 am
SAT
- MIA
1 stop21h 53m
Frontier
Deal found 2/10![Frontier logo]()
$191
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.
Tue 3/37:05 am
MIA
- SAT
2 stops17h 54m
Spirit Airlines
Wed 3/410:26 am
SAT
- MIA
2 stops24h 50m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$206
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.
Tue 3/312:55 pm
MIA
- SAT
1 stop11h 10m
Southwest
Wed 3/46:10 am
SAT
- MIA
1 stop9h 20m
Southwest
Deal found 2/10![Southwest logo]()
$210
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.
Wed 3/46:25 am
MIA
- SAT
1 stop11h 50m
Frontier
Sun 3/86:45 am
SAT
- MIA
2 stops32h 44m
Frontier
Deal found 2/11![Frontier logo]()
$216
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.
Wed 3/46:25 am
MIA
- SAT
1 stop11h 50m
Multiple Airlines
Fri 3/201:22 pm
SAT
- MIA
2 stops27h 31m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$219
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.
Sat 3/75:50 am
MIA
- SAT
1 stop19h 27m
Multiple Airlines
Wed 3/116:00 am
SAT
- MIA
2 stops17h 47m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$188
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:35 pm
MIA
- SAT
1 stop5h 15m
Southwest
Sun 4/512:50 pm
SAT
- MIA
1 stop4h 10m
Southwest
Deal found 2/9![Southwest logo]()
$197
One-way flights from Key Largo to San AntonioSearch for one-way flight options from Key Largo to San Antonio. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
Search for one-way flight options from Key Largo to San Antonio. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
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.
Wed 3/46:25 am
MIA
- SAT
1 stop11h 50m
Frontier
Deal found 2/11![Frontier logo]()
$70
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.
Mon 3/95:05 am
MIA
- SAT
1 stop10h 36m
Frontier
Deal found 2/11![Frontier logo]()
$72
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:09 pm
MIA
- SAT
1 stop22h 06m
Frontier
Deal found 2/10![Frontier logo]()
$75
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:30 am
MIA
- SAT
1 stop9h 09m
Frontier
Deal found 2/10![Frontier logo]()
$76
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:30 am
MIA
- SAT
1 stop9h 09m
Frontier
Deal found 2/10![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.
Tue 4/287:50 am
MIA
- SAT
1 stop31h 29m
Frontier
Deal found 2/10![Frontier logo]()
$78
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.
Sat 2/287:09 pm
MIA
- SAT
1 stop22h 10m
Frontier
Deal found 2/10![Frontier logo]()
$79
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.
Fri 2/277:05 am
MIA
- SAT
1 stop10h 10m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$82
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/25:05 am
MIA
- SAT
1 stop12h 15m
Frontier
Deal found 2/10![Frontier logo]()
$83
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.
Sat 4/256:30 am
MIA
- SAT
1 stop9h 09m
Frontier
Deal found 2/10![Frontier logo]()
$84
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.
Sat 3/75:50 am
MIA
- SAT
1 stop19h 27m
Frontier
Deal found 2/10![Frontier logo]()
$85
Find flight deals from Key Largo to San Antonio
Keep the following information in mind while searching for Key Largo to San Antonio flight deals. Data was last updated February 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $155 (Kiwi.com) |
One-way from | $70 (Frontier) |
Popular in | April |
Cheapest in | January |
Average price | $259 |
Cheapflights Fare Finder
Customize your flight search to find flights from Key Largo to San Antonio 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 February 13, 2026.
Use the filters below to find and compare flights from Key Largo to San Antonio that are best for you.
Fly from
Key Largo
Fly to
San Antonio
Route
Depart
Return
Price
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Sat 3/7
5:50 am-12:17 am
1 stop19h 27m
San Antonio
Tue 3/10
10:26 am-12:47 am
2 stops13h 21m
$188
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Sun 3/1
6:45 am-6:22 pm
1 stop12h 37m
San Antonio
Tue 3/31
6:45 am-5:38 am
1 stop21h 53m
$191
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Wed 4/1
6:40 pm-12:10 am
1 stop6h 30m
San Antonio
Sun 4/5
12:50 pm-6:00 pm
1 stop4h 10m
$197
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Tue 3/3
12:55 pm-11:05 pm
1 stop11h 10m
San Antonio
Wed 3/4
10:10 am-6:35 pm
1 stop7h 25m
$210
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Thu 4/9
8:59 pm-11:15 pm
Nonstop3h 16m
San Antonio
Wed 4/15
5:25 am-9:14 am
Nonstop2h 49m
$211
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Wed 4/8
7:00 am-12:19 am
1 stop18h 19m
San Antonio
Sun 4/12
6:45 am-5:49 am
1 stop22h 04m
$212
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Wed 3/4
6:25 am-5:15 pm
1 stop11h 50m
San Antonio
Sun 3/8
6:45 am-4:29 pm
2 stops32h 44m
$216
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Wed 3/25
9:34 pm-11:59 pm
Nonstop3h 25m
San Antonio
Sat 3/28
5:00 am-8:51 am
Nonstop2h 51m
$221
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Thu 4/23
5:50 am-2:19 pm
1 stop9h 29m
San Antonio
Mon 4/27
12:46 pm-7:32 am
1 stop17h 46m
$222
MiamiSan Antonio
MIA - SAT
MIASAT
Miami
Thu 4/9
12:59 pm-9:47 pm
1 stop9h 48m
San Antonio
Wed 4/15
11:50 am-9:50 pm
1 stop9h 00m
$240
Showing 1-10 of 23 results
Best time to book a flight from Key Largo to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Key Largo with our price prediction graph.
MIA-SAT
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 Key Largo to San Antonio
KE9-SAT
MIA-SAT
How far ahead should I book a flight from Key Largo to San Antonio?
Use this chart to determine the optimal time to book a round-trip flight from Key Largo to San Antonio. Price data was last updated on February 6, 2026.
Booking 73 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo to San Antonio. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Key Largo to San Antonio?
Currently, July is the cheapest month in which you can book a flight from Key Largo to San Antonio (average of $34). Flying from Key Largo to San Antonio in June is currently the most expensive (average of $102). 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 KE9 to SAT?
Find hourly flight availability from Key Largo to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 13, 2026.
One of the essential ways to save on airfare from Key Largo to San Antonio is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 23% on airfare.
What is the cheapest day to fly from Key Largo to San Antonio?
Use this chart to determine the cheapest time to fly round-trip from Key Largo to San Antonio. Price data was last updated on February 7, 2026.
Travelers seeking maximum savings on their Key Largo to San Antonio flight should consider departing on Friday afternoons when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Key Largo to San Antonio
Explore weekly flight availability from Key Largo to San Antonio. 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 February 13, 2026.
The most flights from KE9 to SAT are scheduled on a Tuesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
Reviews of airlines servicing San Antonio
Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated February 13, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Key Largo to San Antonio. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
Find useful and relevant information for your journey from Key Largo to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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Alternative routes for Key Largo to San Antonio
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Complete your trip
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Search flights from Key Largo to San Antonio by cabin class
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Key Largo and San Antonio flights
Browse other Key Largo and San Antonio flight options. Last updated on February 13, 2026.
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Other flights to San Antonio
Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 13, 2026.
Key Largo to San Antonio flights
Consider these flights traveling from Key Largo to San Antonio.
Top 6 airlines flying from Key Largo to San Antonio
Discover the top 6 airlines that operate flights from Key Largo to San Antonio. 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 February 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$75 | Average$201 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$99 | Average$191 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$123 | Average$354 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$161 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$178 | Average$411 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$186 | Average$444 | FlexibilityNo cancel fee | On-time69% |