$64+ Cheap flights from Florida Keys to Puerto Rico
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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SJU
May 7 — May 141
Round-trip
1 adult, Economy
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Find cheap flights from Florida Keys to Puerto Rico 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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Florida Keys to Puerto Rico
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Cheapest flights from Florida Keys to Puerto RicoExplore the most affordable flight options available from Florida Keys to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 7, 2026.
Explore the most affordable flight options available from Florida Keys to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:24 pm
MIA
- SJU
Nonstop2h 34m
Multiple Airlines
Fri 4/1711:30 am
SJU
- MIA
Nonstop2h 59m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$133
This eDestinos deal was found by Cheapflights users on 4/5. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/112:50 pm
MIA
- SJU
Nonstop2h 36m
Frontier
Wed 5/136:41 pm
SJU
- MIA
Nonstop2h 58m
Frontier
Deal found 4/5![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 4/3. 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 4/1310:10 am
MIA
- SJU
Nonstop2h 45m
Frontier
Sat 5/211:30 am
SJU
- MIA
Nonstop2h 59m
Frontier
Deal found 4/3![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 4/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1010:20 pm
MIA
- SJU
Nonstop2h 41m
Frontier
Tue 4/1411:00 am
SJU
- MIA
Nonstop2h 59m
Frontier
Deal found 4/5![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 4/183:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Wed 4/292:00 pm
SJU
- MIA
1 stop9h 51m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$137
This CheapOair deal was found by Cheapflights users on 4/3. 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.
Thu 4/163:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Tue 4/217:00 am
SJU
- MIA
Nonstop2h 46m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$138
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:12 am
MIA
- SJU
1 stop16h 42m
Spirit Airlines
Fri 4/2411:02 am
SJU
- MIA
1 stop11h 29m
Spirit Airlines
Deal found 4/6![Spirit Airlines logo]()
$139
This Frontier deal was found by Cheapflights users on 4/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1210:36 pm
MIA
- SJU
Nonstop2h 41m
Frontier
Thu 4/1611:30 am
SJU
- MIA
Nonstop2h 59m
Frontier
Deal found 4/6![Frontier logo]()
$140
This eDestinos deal was found by Cheapflights users on 4/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:25 pm
MIA
- SJU
Nonstop2h 33m
Spirit Airlines
Sat 4/111:39 am
SJU
- MIA
1 stop11h 08m
Spirit Airlines
Deal found 4/3![Spirit Airlines logo]()
$141
This Booking.com deal was found by Cheapflights users on 4/3. 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.
Tue 4/143:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Thu 4/309:54 am
SJU
- MIA
1 stop12h 37m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$142
This Cheapflightsfares deal was found by Cheapflights users on 4/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
MIA
- SJU
1 stop16h 10m
Spirit Airlines
Sat 5/23:21 am
SJU
- MIA
Nonstop2h 45m
Spirit Airlines
Deal found 4/2![Spirit Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Sun 4/197:00 am
SJU
- MIA
Nonstop2h 46m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$144
Best flights from Florida Keys to Puerto RicoDiscover carefully curated flight deals from Florida Keys to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 7, 2026.
Discover carefully curated flight deals from Florida Keys to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 7, 2026.
This Delta deal was found by Cheapflights users on 4/3. 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 6/2312:01 pm
MIA
- SJU
1 stop8h 42m
Delta
Sun 6/285:56 pm
SJU
- MIA
1 stop7h 01m
Delta
Deal found 4/3![Delta logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:24 pm
MIA
- MAZ
1 stop18h 18m
Multiple Airlines
Sat 4/257:35 am
MAZ
- MIA
1 stop6h 54m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 4/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:10 pm
MIA
- SJU
2 stops11h 30m
Southwest
Thu 5/1410:00 am
SJU
- MIA
2 stops13h 00m
Southwest
Deal found 4/6![Southwest logo]()
$361
This American Airlines deal was found by Cheapflights users on 4/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:05 am
EYW
- SJU
2 stops13h 19m
American Airlines
Fri 4/2411:43 am
SJU
- EYW
2 stops10h 53m
American Airlines
Deal found 4/4![American Airlines logo]()
$426
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 4/1712:14 pm
MIA
- BQN
1 stop10h 55m
United Airlines
Mon 4/2012:15 am
BQN
- MIA
1 stop9h 25m
United Airlines
Deal found 4/2![United Airlines logo]()
$506
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:49 am
EYW
- SJU
1 stop13h 40m
Multiple Airlines
Fri 4/247:17 pm
SJU
- EYW
2 stops39h 04m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 4/3. 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 4/1710:29 am
MIA
- SJU
1 stop9h 55m
Delta
Wed 4/296:15 am
SJU
- MIA
1 stop9h 20m
Delta
Deal found 4/3![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 4/3. 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 5/166:00 am
MIA
- SJU
1 stop7h 38m
Delta
Wed 5/272:48 pm
SJU
- MIA
1 stop8h 03m
Delta
Deal found 4/3![Delta logo]()
$321
This Southwest deal was found by Cheapflights users on 4/5. 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.
Thu 5/1412:05 pm
MIA
- SJU
2 stops11h 20m
Southwest
Fri 5/152:00 pm
SJU
- MIA
1 stop8h 00m
Southwest
Deal found 4/5![Southwest logo]()
$376
This Southwest deal was found by Cheapflights users on 4/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/111:50 pm
MIA
- SJU
2 stops9h 50m
Southwest
Tue 5/125:35 am
SJU
- MIA
2 stops15h 05m
Southwest
Deal found 4/6![Southwest logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 4/2. 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 6/91:14 pm
EYW
- SJU
1 stop11h 09m
Multiple Airlines
Tue 6/165:01 pm
SJU
- EYW
1 stop18h 05m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 4/7. 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.
Mon 6/157:40 pm
EYW
- SJU
1 stop13h 59m
American Airlines
Fri 6/196:00 am
SJU
- EYW
1 stop13h 10m
American Airlines
Deal found 4/7![American Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 4/4. 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 5/211:50 am
MIA
- SJU
2 stops11h 50m
Southwest
Sat 5/96:25 am
SJU
- MIA
2 stops10h 35m
Southwest
Deal found 4/4![Southwest logo]()
$384
This American Airlines deal was found by Cheapflights users on 4/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:09 pm
EYW
- SJU
1 stop4h 31m
American Airlines
Sun 9/610:32 am
SJU
- EYW
1 stop8h 07m
American Airlines
Deal found 4/4![American Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 4/2. 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 5/412:05 pm
MIA
- SJU
2 stops11h 20m
Southwest
Fri 5/85:05 am
SJU
- MIA
2 stops10h 15m
Southwest
Deal found 4/2![Southwest logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 4/3. 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.
Sun 5/3111:04 am
EYW
- SJU
1 stop12h 55m
Multiple Airlines
Sun 6/76:46 pm
SJU
- EYW
2 stops41h 48m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 4/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:14 pm
MIA
- BQN
1 stop10h 55m
United Airlines
Tue 4/2112:15 am
BQN
- MIA
1 stop9h 25m
United Airlines
Deal found 4/4![United Airlines logo]()
$541
This Southwest deal was found by Cheapflights users on 4/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:05 pm
MIA
- SJU
2 stops11h 50m
Southwest
Tue 5/55:35 am
SJU
- MIA
2 stops15h 05m
Southwest
Deal found 4/6![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 4/3. 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 6/112:24 pm
EYW
- SJU
1 stop8h 03m
Delta
Wed 6/1712:54 pm
SJU
- EYW
1 stop6h 59m
Delta
Deal found 4/3![Delta logo]()
$491
This Kiwi.com deal was found by Cheapflights users on 4/2. 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 6/1111:04 am
EYW
- SJU
1 stop13h 19m
Multiple Airlines
Tue 6/165:01 pm
SJU
- EYW
1 stop18h 05m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$472
This Southwest deal was found by Cheapflights users on 4/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:05 pm
MIA
- SJU
2 stops11h 20m
Southwest
Mon 5/45:05 am
SJU
- MIA
1 stop6h 20m
Southwest
Deal found 4/6![Southwest logo]()
$409
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Sat 5/22:20 pm
MIA
- BQN
1 stop8h 49m
United Airlines
Fri 5/812:15 am
BQN
- MIA
1 stop8h 55m
United Airlines
Deal found 4/2![United Airlines logo]()
$605
This Southwest deal was found by Cheapflights users on 4/4. 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.
Thu 6/43:05 pm
MIA
- SJU
2 stops10h 15m
Southwest
Sun 6/74:20 pm
SJU
- MIA
1 stop5h 45m
Southwest
Deal found 4/4![Southwest logo]()
$426
This United Airlines deal was found by Cheapflights users on 4/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:15 am
MIA
- BQN
2 stops16h 54m
United Airlines
Fri 5/812:15 am
BQN
- MIA
1 stop8h 55m
United Airlines
Deal found 4/4![United Airlines logo]()
$648
This United Airlines deal was found by Cheapflights users on 4/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:40 pm
MIA
- BQN
2 stops27h 29m
United Airlines
Sun 5/1712:15 am
BQN
- MIA
1 stop8h 55m
United Airlines
Deal found 4/5![United Airlines logo]()
$703
This United Airlines deal was found by Cheapflights users on 4/3. 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 5/712:15 pm
MIA
- BQN
1 stop10h 54m
United Airlines
Wed 5/1312:15 am
BQN
- MIA
2 stops16h 01m
United Airlines
Deal found 4/3![United Airlines logo]()
$704
This United Airlines deal was found by Cheapflights users on 4/3. 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.
Sun 5/312:15 pm
MIA
- BQN
1 stop10h 54m
United Airlines
Sat 5/912:15 am
BQN
- MIA
1 stop8h 55m
United Airlines
Deal found 4/3![United Airlines logo]()
$711
This United Airlines deal was found by Cheapflights users on 4/3. 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.
Fri 5/17:40 pm
MIA
- BQN
2 stops27h 29m
United Airlines
Sun 5/312:15 am
BQN
- MIA
1 stop8h 55m
United Airlines
Deal found 4/3![United Airlines logo]()
$740
This United Airlines deal was found by Cheapflights users on 4/2. 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 6/25:24 pm
MIA
- BQN
2 stops29h 45m
United Airlines
Fri 6/512:15 am
BQN
- MIA
1 stop9h 47m
United Airlines
Deal found 4/2![United Airlines logo]()
$742
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Sat 5/308:48 am
MIA
- CPX
3 stops32h 33m
United Airlines
Wed 6/310:48 am
CPX
- MIA
2 stops12h 34m
United Airlines
Deal found 4/2![United Airlines logo]()
$1,020
Last-minute flights from Florida Keys to Puerto RicoDiscover last-minute flight deals from Florida Keys to Puerto Rico. Data last updated April 7, 2026 and is based on user searches.
Discover last-minute flight deals from Florida Keys to Puerto Rico. Data last updated April 7, 2026 and is based on user searches.
This eDestinos deal was found by Cheapflights users on 4/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:25 pm
MIA
- SJU
Nonstop2h 33m
Spirit Airlines
Sat 4/111:39 am
SJU
- MIA
1 stop11h 08m
Spirit Airlines
Deal found 4/3![Spirit Airlines logo]()
$141
This Frontier deal was found by Cheapflights users on 4/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1010:20 pm
MIA
- SJU
Nonstop2h 41m
Frontier
Tue 4/1411:00 am
SJU
- MIA
Nonstop2h 59m
Frontier
Deal found 4/5![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 4/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1210:36 pm
MIA
- SJU
Nonstop2h 41m
Frontier
Fri 4/1711:30 am
SJU
- MIA
Nonstop2h 59m
Frontier
Deal found 4/6![Frontier logo]()
$140
This Frontier deal was found by Cheapflights users on 4/3. 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 4/1310:10 am
MIA
- SJU
Nonstop2h 45m
Frontier
Sat 5/211:30 am
SJU
- MIA
Nonstop2h 59m
Frontier
Deal found 4/3![Frontier logo]()
$135
This Booking.com deal was found by Cheapflights users on 4/3. 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.
Tue 4/143:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Thu 4/309:54 am
SJU
- MIA
1 stop12h 37m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:24 pm
MIA
- SJU
Nonstop2h 34m
Multiple Airlines
Fri 4/1711:30 am
SJU
- MIA
Nonstop2h 59m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$133
This CheapOair deal was found by Cheapflights users on 4/3. 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.
Thu 4/163:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Tue 4/217:00 am
SJU
- MIA
Nonstop2h 46m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Mon 4/207:00 am
SJU
- MIA
Nonstop2h 46m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 4/183:24 pm
MIA
- SJU
Nonstop2h 35m
Multiple Airlines
Wed 4/292:00 pm
SJU
- MIA
1 stop9h 51m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$137
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:12 am
MIA
- SJU
1 stop16h 42m
Spirit Airlines
Fri 4/2411:02 am
SJU
- MIA
1 stop11h 29m
Spirit Airlines
Deal found 4/6![Spirit Airlines logo]()
$139
This Cheapflightsfares deal was found by Cheapflights users on 4/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
MIA
- SJU
1 stop16h 10m
Spirit Airlines
Sat 5/23:21 am
SJU
- MIA
Nonstop2h 45m
Spirit Airlines
Deal found 4/2![Spirit Airlines logo]()
$143
This eDestinos deal was found by Cheapflights users on 4/5. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/112:50 pm
MIA
- SJU
Nonstop2h 36m
Frontier
Wed 5/136:41 pm
SJU
- MIA
Nonstop2h 58m
Frontier
Deal found 4/5![Frontier logo]()
$134
One-way flights from Florida Keys to Puerto RicoSearch for one-way flight options from Florida Keys to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated April 7, 2026.
Search for one-way flight options from Florida Keys to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated April 7, 2026.
This CheapOair deal was found by Cheapflights users on 4/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/33:24 pm
MIA
- SJU
Nonstop2h 35m
Frontier
Deal found 4/5![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 4/3011:36 pm
MIA
- SJU
Nonstop2h 30m
Spirit Airlines
Deal found 4/3![Spirit Airlines logo]()
$65
This Cheapflightsfares deal was found by Cheapflights users on 4/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/119:25 pm
MIA
- SJU
Nonstop2h 33m
Spirit Airlines
Deal found 4/5![Spirit Airlines logo]()
$66
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/109:25 pm
MIA
- SJU
Nonstop2h 33m
Spirit Airlines
Deal found 4/6![Spirit Airlines logo]()
$67
This eDestinos deal was found by Cheapflights users on 4/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:24 pm
MIA
- SJU
Nonstop2h 34m
Spirit Airlines
Deal found 4/4![Spirit Airlines logo]()
$68
This Orbitz deal was found by Cheapflights users on 4/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:24 pm
MIA
- SJU
Nonstop2h 35m
Frontier
Deal found 4/7![Frontier logo]()
$69
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
MIA
- SJU
1 stop16h 10m
Spirit Airlines
Deal found 4/6![Spirit Airlines logo]()
$70
This Super.com deal was found by Cheapflights users on 4/6. 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.
Thu 4/163:24 pm
MIA
- SJU
Nonstop2h 35m
Frontier
Deal found 4/6![Frontier logo]()
$72
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:24 pm
MIA
- SJU
Nonstop2h 34m
Spirit Airlines
Deal found 4/6![Spirit Airlines logo]()
$73
This CheapOair deal was found by Cheapflights users on 4/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:36 pm
MIA
- SJU
Nonstop2h 30m
Spirit Airlines
Deal found 4/6![Spirit Airlines logo]()
$74
This Trip.com deal was found by Cheapflights users on 4/3. 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 5/42:23 pm
MIA
- SJU
Nonstop2h 29m
Spirit Airlines
Deal found 4/3![Spirit Airlines logo]()
$77
This eDestinos deal was found by Cheapflights users on 4/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/168:10 am
MIA
- BQN
2 stops17h 52m
Frontier
Deal found 4/3![Frontier logo]()
$153
Find flight deals from Florida Keys to Puerto Rico
Keep the following information in mind while searching for Florida Keys to Puerto Rico flight deals. Data was last updated April 7, 2026.
Round-trip from | $133 (CheapOair) |
|---|---|
One-way from | $64 (CheapOair) |
Cheapflights Fare Finder
Customize your flight search to find flights from Florida Keys to Puerto Rico 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 April 7, 2026.
Use the filters below to find and compare flights from Florida Keys to Puerto Rico that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Tue 6/23
12:01 pm-8:43 pm
1 stop8h 42m
San Juan Luis Munoz Marin Intl
Sun 6/28
5:56 pm-12:57 am
1 stop7h 01m
$280
MiamiMayagüez
MIA - MAZ
MIAMAZ
Miami
Tue 4/21
3:24 pm-9:42 am
1 stop18h 18m
Mayagüez Eugenio M De Hostos
Sat 4/25
7:35 am-2:29 pm
1 stop6h 54m
$282
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Mon 4/20
9:49 am-11:29 pm
1 stop13h 40m
San Juan Luis Munoz Marin Intl
Fri 4/24
7:17 pm-10:21 am
2 stops39h 04m
$303
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Fri 4/17
10:29 am-8:24 pm
1 stop9h 55m
San Juan Luis Munoz Marin Intl
Wed 4/29
6:15 am-3:35 pm
1 stop9h 20m
$308
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Sat 5/16
6:00 am-1:38 pm
1 stop7h 38m
San Juan Luis Munoz Marin Intl
Wed 5/27
2:48 pm-10:51 pm
1 stop8h 03m
$321
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Tue 5/12
12:10 pm-11:40 pm
2 stops11h 30m
San Juan Luis Munoz Marin Intl
Thu 5/14
10:00 am-11:00 pm
2 stops13h 00m
$361
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Thu 5/14
12:05 pm-11:25 pm
2 stops11h 20m
San Juan Luis Munoz Marin Intl
Fri 5/15
2:00 pm-10:00 pm
1 stop8h 00m
$376
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Mon 5/11
1:50 pm-11:40 pm
2 stops9h 50m
San Juan Luis Munoz Marin Intl
Tue 5/12
5:35 am-8:40 pm
2 stops15h 05m
$379
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Sat 5/2
11:50 am-11:40 pm
2 stops11h 50m
San Juan Luis Munoz Marin Intl
Sat 5/9
6:25 am-5:00 pm
2 stops10h 35m
$384
Key WestSan Juan
EYW - SJU
EYWSJU
Key West
Tue 6/9
1:14 pm-12:23 am
1 stop11h 09m
San Juan Luis Munoz Marin Intl
Tue 6/16
5:01 pm-11:06 am
1 stop18h 05m
$387
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Florida Keys to Puerto Rico
Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Florida Keys with our price prediction graph.
MIA-SJU
MIA-BQN
MIA-MAZ
EYW-SJU
MIA-CPX
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 Florida Keys to Puerto Rico
zzEOA-PR0
MIA-SJU
MIA-BQN
MIA-MAZ
EYW-SJU
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Puerto Rico
Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated April 7, 2026.
Read reviews from past customers who have flown Delta,JetBlue, andAmerican Airlines from Florida Keys to Puerto Rico. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Related info for your journey
Find useful and relevant information for your journey from Florida Keys to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Florida Keys to Puerto Rico
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Puerto Rico by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Florida Keys to Puerto Rico by cabin class
Find flights from Florida Keys to Puerto Rico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Florida Keys and Puerto Rico flights
Browse other Florida Keys and Puerto Rico flight options. Last updated on April 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Puerto Rico
Find the right flight back to Florida Keys after your stay in Puerto Rico
Florida Keys to Puerto Rico flights
Consider these flights traveling from Florida Keys to Puerto Rico.
Top airline flying from Florida Keys to Puerto Rico
Discover the top airline that operate flights from Florida Keys to Puerto Rico. 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 April 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$390 | Average$495 | FlexibilityNo cancel fee | On-time71% |