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Puerto Rico

$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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SJU
ene. 14 — ene. 211
mié. 1/14
mié. 1/21
1 adult, Economy
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Cheap flight deals from Florida Keys to Puerto Rico

Cheapest flights from Florida Keys to Puerto Rico
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 diciembre 15, 2025.

This Trip.com deal was found by Cheapflights users on 12/15. 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.
dom. 12/285:05 amMIA - SJU
Nonstop2h 34mFrontier
sáb. 1/108:15 amSJU - MIA
Nonstop2h 59mFrontier
Deal found 12/15$141
This Super.com deal was found by Cheapflights users on 12/15. 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.
dom. 12/2811:05 pmMIA - SJU
Nonstop2h 34mFrontier
vie. 1/910:47 pmSJU - MIA
Nonstop3h 02mFrontier
Deal found 12/15$146
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/154:10 pmMIA - SJU
Nonstop2h 40mMultiple Airlines
dom. 12/219:49 amSJU - MIA
Nonstop3h 00mMultiple Airlines
Deal found 12/13$147
This Cheapflightsfares deal was found by Cheapflights users on 12/14. 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.
jue. 12/253:38 pmMIA - SJU
Nonstop2h 35mSpirit Airlines
vie. 1/1611:52 amSJU - MIA
Nonstop2h 58mSpirit Airlines
Deal found 12/14$148
This Priceline deal was found by Cheapflights users on 12/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/144:10 pmMIA - SJU
Nonstop2h 40mSpirit Airlines
mié. 12/177:07 pmSJU - MIA
Nonstop2h 56mSpirit Airlines
Deal found 12/13$149
This CheapOair deal was found by Cheapflights users on 12/15. 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.
jue. 12/183:38 pmMIA - SJU
Nonstop2h 35mSpirit Airlines
lun. 12/2212:53 pmSJU - MIA
Nonstop2h 50mSpirit Airlines
Deal found 12/15$150
This Frontier deal was found by Cheapflights users on 12/14. 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.
sáb. 12/2711:05 pmMIA - SJU
Nonstop2h 34mFrontier
vie. 1/166:00 amSJU - MIA
Nonstop2h 57mFrontier
Deal found 12/14$151
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/273:38 pmMIA - SJU
Nonstop2h 35mMultiple Airlines
mar. 12/303:54 amSJU - MIA
Nonstop3h 06mMultiple Airlines
Deal found 12/13$154
This Frontier deal was found by Cheapflights users on 12/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3111:05 pmMIA - SJU
Nonstop2h 34mFrontier
jue. 1/811:52 amSJU - MIA
1 stop10h 22mFrontier
Deal found 12/13$155
This eDestinos deal was found by Cheapflights users on 12/14. 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.
dom. 12/2811:05 pmMIA - SJU
Nonstop2h 34mFrontier
jue. 1/1511:55 amSJU - MIA
1 stop12h 32mFrontier
Deal found 12/14$157
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/273:38 pmMIA - SJU
Nonstop2h 35mSpirit Airlines
jue. 1/811:52 amSJU - MIA
Nonstop2h 58mSpirit Airlines
Deal found 12/13$158
This CheapOair deal was found by Cheapflights users on 12/12. 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.
sáb. 12/135:05 amMIA - SJU
1 stop17h 20mSpirit Airlines
sáb. 12/2012:53 pmSJU - MIA
Nonstop2h 50mSpirit Airlines
Deal found 12/12$160

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 diciembre 15, 2025.

Round-trip from

$137
(Frontier)

One-way from

$64
(Super.com)
From Florida Keys to Puerto Rico
Search Deals
One-way flight from Florida Keys to Puerto Rico
Search Deals

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 diciembre 15, 2025.
Use the filters below to find and compare flights from Florida Keys to Puerto Rico that are best for you.

Fly from

Florida Keys

Fly to

Puerto Rico

Route

Depart

Return

Price

MiamiSan Juan

MIA - SJU

MIASJU

Miami

mié. 3/4

3:26 pm-6:58 pm

Nonstop2h 32m

San Juan Luis Munoz Marin Intl

sáb. 3/7

11:52 am-1:50 pm

Nonstop2h 58m

$168

MiamiSan Juan

MIA - SJU

MIASJU

Miami

vie. 1/9

9:59 pm-8:54 am

2 stops33h 55m

San Juan Luis Munoz Marin Intl

lun. 1/12

5:45 am-7:51 am

Nonstop3h 06m

$172

MiamiSan Juan

MIA - SJU

MIASJU

Miami

jue. 1/29

5:20 pm-12:35 am

1 stop6h 15m

San Juan Luis Munoz Marin Intl

jue. 2/5

5:35 am-11:50 am

1 stop7h 15m

$209

MiamiSan Juan

MIA - SJU

MIASJU

Miami

jue. 1/22

5:20 pm-12:35 am

1 stop6h 15m

San Juan Luis Munoz Marin Intl

sáb. 1/31

5:30 am-2:50 pm

2 stops10h 20m

$215

MiamiSan Juan

MIA - SJU

MIASJU

Miami

lun. 1/26

5:20 pm-12:35 am

1 stop6h 15m

San Juan Luis Munoz Marin Intl

sáb. 1/31

5:30 am-2:50 pm

2 stops10h 20m

$232

MiamiSan Juan

MIA - SJU

MIASJU

Miami

jue. 2/5

12:25 pm-12:40 am

2 stops11h 15m

San Juan Luis Munoz Marin Intl

dom. 2/8

5:40 am-12:05 pm

1 stop7h 25m

$255

MiamiSan Juan

MIA - SJU

MIASJU

Miami

sáb. 4/25

6:15 am-12:55 pm

1 stop6h 40m

San Juan Luis Munoz Marin Intl

vie. 5/1

5:05 am-11:25 am

1 stop6h 20m

$261

MiamiSan Juan

MIA - SJU

MIASJU

Miami

vie. 2/13

6:30 pm-1:35 am

1 stop6h 05m

San Juan Luis Munoz Marin Intl

mié. 2/18

5:40 am-3:30 pm

2 stops10h 50m

$261

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

jue. 2/5

11:01 am-4:57 pm

2 stops28h 56m

San Juan Luis Munoz Marin Intl

lun. 2/9

6:00 am-12:26 pm

1 stop7h 26m

$298

MiamiSan Juan

MIA - SJU

MIASJU

Miami

jue. 1/22

12:00 pm-12:35 am

2 stops11h 35m

San Juan Luis Munoz Marin Intl

dom. 1/25

5:35 am-11:50 am

1 stop7h 15m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 60 results
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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.
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
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 diciembre 15, 2025.
Read reviews from past customers who have flown Delta, American Airlines, and JetBlue 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.
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
7.9
Good
8,010 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
American Airlines
7.2
Good
11,048 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
JetBlue
7.2
Good
2,894 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Spirit Airlines
6.3
Okay
8,186 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Frontier
5.8
Fair
3,082 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

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.

  • How long is the flight from Florida Keys to Puerto Rico?

    For as low as $168, Spirit Airlines can have you in Puerto Rico from Florida Keys in 2h 32m. Airlines will cover a distance of 1044 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Florida Keys to Puerto Rico one-way?

    $40 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and JetBlue, with prices starting from $46 and $83, respectively.

  • Can I find deals for flights from Florida Keys to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Florida Keys to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Florida Keys to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Florida Keys to Puerto Rico.

  • Can I find deals for business class flights from Florida Keys to Puerto Rico?

    Yes. Cheapflights offers flight deals from Florida Keys to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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.
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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 diciembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$360Average$455FlexibilityNo cancel feeOn-time71%

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