$104+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — MIA
Aug 8 — Aug 151
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 January, booked 25 days in advance, depart on a Thursday or Saturday 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 July 9, 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 July 9, 2026.
This Frontier deal was found by Cheapflights users on 7/8. 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.
Tue 8/47:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Thu 8/66:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/8![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 7/7. 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.
Sun 8/27:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Wed 8/56:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/7![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 7/7. 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 7/297:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Sat 8/16:00 am
MIA
- SAT
1 stop13h 44m
Frontier
Deal found 7/7![Frontier logo]()
$244
This Delta deal was found by Cheapflights users on 7/9. 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.
Thu 8/2712:05 pm
SAT
- MIA
1 stop5h 35m
Delta
Tue 9/12:08 pm
MIA
- SAT
1 stop7h 56m
Delta
Deal found 7/9![Delta logo]()
$249
This Frontier deal was found by Cheapflights users on 7/4. 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 7/297:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Sun 8/26:00 am
MIA
- SAT
1 stop13h 44m
Frontier
Deal found 7/4![Frontier logo]()
$250
This Booking.com deal was found by Cheapflights users on 7/4. 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 9/38:26 pm
SAT
- MIA
1 stop7h 26m
Frontier
Wed 9/97:20 am
MIA
- SAT
1 stop27h 52m
Frontier
Deal found 7/4![Frontier logo]()
$251
This Frontier deal was found by Cheapflights users on 7/7. 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 8/157:49 pm
SAT
- MIA
1 stop8h 28m
Frontier
Sat 8/226:00 am
MIA
- SAT
1 stop14h 31m
Frontier
Deal found 7/7![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:49 pm
SAT
- MIA
1 stop9h 02m
Multiple Airlines
Thu 8/133:07 pm
MIA
- SAT
2 stops20h 43m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:15 am
SAT
- MIA
Nonstop3h 00m
American Airlines
Mon 8/109:59 pm
MIA
- SAT
Nonstop3h 00m
American Airlines
Deal found 7/7![American Airlines logo]()
$262
This Frontier deal was found by Cheapflights users on 7/7. 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.
Mon 8/37:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Mon 8/106:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/7![Frontier logo]()
$263
This Frontier deal was found by Cheapflights users on 7/8. 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.
Fri 8/77:49 pm
SAT
- MIA
1 stop9h 02m
Frontier
Mon 8/106:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/8![Frontier logo]()
$264
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 July 9, 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 July 9, 2026.
This Delta deal was found by Cheapflights users on 7/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:22 pm
SAT
- MIA
1 stop5h 31m
Delta
Mon 10/192:15 pm
MIA
- SAT
1 stop8h 29m
Delta
Deal found 7/8![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 7/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:20 am
SAT
- MIA
1 stop11h 35m
Southwest
Sun 9/136:40 pm
MIA
- SAT
1 stop5h 50m
Southwest
Deal found 7/8![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 7/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:07 pm
SAT
- MIA
1 stop5h 07m
United Airlines
Mon 11/305:01 pm
MIA
- SAT
1 stop6h 50m
United Airlines
Deal found 7/8![United Airlines logo]()
$411
This Southwest deal was found by Cheapflights users on 7/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:00 pm
SAT
- MIA
2 stops8h 05m
Southwest
Thu 8/135:45 am
MIA
- SAT
2 stops8h 05m
Southwest
Deal found 7/8![Southwest logo]()
$436
This Delta deal was found by Cheapflights users on 7/7. 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.
Sat 11/285:30 am
SAT
- MIA
1 stop7h 59m
Delta
Sun 12/68:05 am
MIA
- SAT
1 stop8h 23m
Delta
Deal found 7/7![Delta logo]()
$471
This United Airlines deal was found by Cheapflights users on 7/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:27 am
SAT
- MIA
1 stop8h 49m
United Airlines
Wed 8/58:48 am
MIA
- SAT
1 stop5h 29m
United Airlines
Deal found 7/8![United Airlines logo]()
$471
This Southwest deal was found by Cheapflights users on 7/5. 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 10/244:45 pm
SAT
- MIA
1 stop4h 20m
Southwest
Sat 10/317:00 am
MIA
- SAT
2 stops7h 40m
Southwest
Deal found 7/5![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 7/7. 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 11/148:05 am
SAT
- MIA
2 stops7h 25m
Southwest
Fri 11/208:05 pm
MIA
- SAT
1 stop5h 50m
Southwest
Deal found 7/7![Southwest logo]()
$473
This Southwest deal was found by Cheapflights users on 7/4. 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 8/111:40 am
SAT
- MIA
2 stops9h 30m
Southwest
Sat 8/89:40 am
MIA
- SAT
2 stops11h 40m
Southwest
Deal found 7/4![Southwest logo]()
$507
This Southwest deal was found by Cheapflights users on 7/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:20 pm
SAT
- MIA
1 stop4h 25m
Southwest
Sun 8/28:20 pm
MIA
- SAT
1 stop5h 50m
Southwest
Deal found 7/8![Southwest logo]()
$517
This Southwest deal was found by Cheapflights users on 7/4. 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 10/91:55 pm
SAT
- MIA
2 stops8h 50m
Southwest
Sun 10/185:15 am
MIA
- SAT
2 stops7h 50m
Southwest
Deal found 7/4![Southwest logo]()
$545
Last-minute flights from San Antonio to Key LargoDiscover last-minute flight deals from San Antonio to Key Largo. Data last updated July 9, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Key Largo. Data last updated July 9, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/7. 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 7/297:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Sat 8/16:00 am
MIA
- SAT
1 stop13h 44m
Frontier
Deal found 7/7![Frontier logo]()
$244
This Frontier deal was found by Cheapflights users on 7/4. 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 7/297:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Sun 8/26:00 am
MIA
- SAT
1 stop13h 44m
Frontier
Deal found 7/4![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 7/7. 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.
Sun 8/27:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Wed 8/56:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/7![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 7/7. 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.
Mon 8/37:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Mon 8/106:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/7![Frontier logo]()
$263
This Frontier deal was found by Cheapflights users on 7/8. 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.
Tue 8/47:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Thu 8/66:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/8![Frontier logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:49 pm
SAT
- MIA
1 stop9h 02m
Multiple Airlines
Thu 8/133:07 pm
MIA
- SAT
2 stops20h 43m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:11 pm
SAT
- MIA
Nonstop2h 54m
American Airlines
Mon 8/109:59 pm
MIA
- SAT
Nonstop3h 00m
American Airlines
Deal found 7/8![American Airlines logo]()
$262
This Frontier deal was found by Cheapflights users on 7/8. 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.
Fri 8/77:49 pm
SAT
- MIA
1 stop9h 02m
Frontier
Mon 8/106:00 am
MIA
- SAT
1 stop13h 54m
Frontier
Deal found 7/8![Frontier logo]()
$264
This Frontier deal was found by Cheapflights users on 7/7. 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 8/157:49 pm
SAT
- MIA
1 stop8h 28m
Frontier
Sat 8/226:00 am
MIA
- SAT
1 stop14h 31m
Frontier
Deal found 7/7![Frontier logo]()
$258
This Delta deal was found by Cheapflights users on 7/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:05 pm
SAT
- MIA
1 stop7h 59m
Delta
Sat 9/122:15 pm
MIA
- SAT
1 stop5h 50m
Delta
Deal found 7/8![Delta logo]()
$249
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 July 9, 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 July 9, 2026.
This Super.com deal was found by Cheapflights users on 7/6. 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 8/47:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Deal found 7/6![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 7/8. 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.
Wed 9/28:26 pm
SAT
- MIA
1 stop7h 26m
Frontier
Deal found 7/8![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 7/6. 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.
Wed 7/297:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Deal found 7/6![Frontier logo]()
$114
This Priceline deal was found by Cheapflights users on 7/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:39 pm
SAT
- MIA
1 stop9h 12m
Frontier
Deal found 7/7![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 10/2012:16 pm
SAT
- MIA
1 stop16h 32m
Frontier
Deal found 7/7![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 8/711:30 am
SAT
- MIA
3 stops31h 59m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$122
This Super.com deal was found by Cheapflights users on 7/7. 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 8/17:39 pm
SAT
- MIA
1 stop8h 38m
Frontier
Deal found 7/7![Frontier logo]()
$128
This Priceline deal was found by Cheapflights users on 7/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/157:49 pm
SAT
- MIA
1 stop8h 28m
Frontier
Deal found 7/8![Frontier logo]()
$129
This Southwest deal was found by Cheapflights users on 7/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:30 am
SAT
- MIA
2 stops8h 25m
Southwest
Deal found 7/8![Southwest logo]()
$130
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 July 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $239 (Frontier) |
One-way from | $104 (Super.com) |
Popular in | December |
Cheapest in | October |
Average price | $465 |
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 July 9, 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
Thu 10/15
6:22 pm-12:53 am
1 stop5h 31m
Miami
Mon 10/19
2:15 pm-9:44 pm
1 stop8h 29m
$249
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 9/5
7:20 am-7:55 pm
1 stop11h 35m
Miami
Sun 9/13
6:40 pm-11:30 pm
1 stop5h 50m
$396
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Thu 11/26
12:07 pm-6:14 pm
1 stop5h 07m
Miami
Mon 11/30
5:01 pm-10:51 pm
1 stop6h 50m
$411
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Thu 8/6
1:00 pm-10:05 pm
2 stops8h 05m
Miami
Thu 8/13
5:45 am-12:50 pm
2 stops8h 05m
$436
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 10/24
4:45 pm-10:05 pm
1 stop4h 20m
Miami
Sat 10/31
7:00 am-1:40 pm
2 stops7h 40m
$444
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 11/28
5:30 am-2:29 pm
1 stop7h 59m
Miami
Sun 12/6
8:05 am-3:28 pm
1 stop8h 23m
$471
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Tue 8/4
6:27 am-4:16 pm
1 stop8h 49m
Miami
Wed 8/5
8:48 am-1:17 pm
1 stop5h 29m
$471
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 11/14
8:05 am-4:30 pm
2 stops7h 25m
Miami
Fri 11/20
8:05 pm-12:55 am
1 stop5h 50m
$473
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 8/1
11:40 am-10:10 pm
2 stops9h 30m
Miami
Sat 8/8
9:40 am-8:20 pm
2 stops11h 40m
$507
Quickest round-trip
San AntonioMiami
SAT - MIA
SATMIA
San Antonio
Sat 8/1
5:20 pm-10:45 pm
1 stop4h 25m
Miami
Sun 8/2
8:20 pm-1:10 am
1 stop5h 50m
$517
Showing 1-10 of 23 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 July 9, 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 17% on your trip compared to booking a flight in the morning.
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 July 9, 2026.
The most flights from SAT to KE9 are scheduled on a Wednesday (5 on average). You will have fewer flight options on Thursday, 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. Saturday mornings 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 July 9, 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.
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
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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San Antonio and Key Largo flights
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Top 6 airlines flying from San Antonio to Key Largo
Discover the top 6 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 July 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$120 | Average$262 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$137 | Average$385 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$140 | Average$306 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$432 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$196 | Average$441 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$284 | Average$433 | FlexibilityNo cancel fee | On-time69% |