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$40+ 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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SJU
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
1 adult, Economy
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Cheap 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 June 26, 2025.

Round-trip from

$135
(CheapOair)

One-way from

$40
(Frontier)
From Florida Keys to Puerto Rico
Search Deals
One-way flight from Florida Keys to Puerto Rico
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Find 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 June 26, 2025.

This CheapOair deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/16:33 pmMIA - SJU
Nonstop2h 31mSpirit Airlines
Tue 7/88:45 pmSJU - MIA
Nonstop2h 52mSpirit Airlines
Deal found 6/24$135
This Frontier deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/93:55 pmMIA - BQN
Nonstop2h 41mFrontier
Sat 8/167:31 pmBQN - MIA
Nonstop2h 35mFrontier
Deal found 6/25$138
This SmartFares deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:30 amMIA - SJU
Nonstop2h 40mFrontier
Mon 9/229:39 pmSJU - MIA
Nonstop2h 50mFrontier
Deal found 6/25$138
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1010:10 amMIA - SJU
Nonstop2h 26mMultiple Airlines
Thu 7/175:15 pmSJU - MIA
Nonstop2h 49mMultiple Airlines
Deal found 6/25$140
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:25 pmMIA - SJU
1 stop6h 25mSouthwest
Sun 9/145:05 amSJU - MIA
1 stop6h 25mSouthwest
Deal found 6/26$175
This American Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:40 pmMIA - SJU
Nonstop2h 40mAmerican Airlines
Tue 10/283:55 pmSJU - MIA
Nonstop2h 55mAmerican Airlines
Deal found 6/26$198
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:35 pmEYW - SJU
1 stop7h 33mDelta
Mon 10/67:30 amSJU - EYW
1 stop9h 42mDelta
Deal found 6/26$319
This American Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:17 pmEYW - SJU
2 stops18h 29mAmerican Airlines
Mon 10/612:00 pmSJU - EYW
1 stop4h 29mAmerican Airlines
Deal found 6/26$365
This Mytrip deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/114:51 pmMIA - CPX
2 stops24h 00mMultiple Airlines
Tue 7/1510:13 amCPX - MIA
1 stop6h 08mMultiple Airlines
Deal found 6/26$430
This Mytrip deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1110:02 amEYW - SJU
1 stop15h 33mMultiple Airlines
Tue 7/153:50 pmSJU - EYW
3 stops23h 15mMultiple Airlines
Deal found 6/26$519
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:25 pmMIA - BQN
1 stop9h 44mUnited Airlines
Fri 9/512:15 amBQN - MIA
2 stops22h 18mUnited Airlines
Deal found 6/26$561
This Mytrip deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1810:10 amMIA - VQS
1 stop7h 50mMultiple Airlines
Sun 7/272:45 pmVQS - MIA
2 stops18h 30mMultiple Airlines
Deal found 6/25$666

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 June 26, 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

Wed 7/9

10:10 am-12:36 pm

Nonstop2h 26m

San Juan Luis Munoz Marin Intl

Fri 7/11

1:31 pm-4:21 pm

Nonstop2h 50m

$136

MiamiAguadilla

MIA - BQN

MIABQN

Miami

Sat 8/9

3:55 pm-6:36 pm

Nonstop2h 41m

Aguadilla Borinquen

Sat 8/16

7:31 pm-10:06 pm

Nonstop2h 35m

$138

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Fri 9/19

5:30 am-8:10 am

Nonstop2h 40m

San Juan Luis Munoz Marin Intl

Mon 9/22

9:39 pm-12:29 am

Nonstop2h 50m

$138

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Wed 7/9

10:10 am-12:36 pm

Nonstop2h 26m

San Juan Luis Munoz Marin Intl

Sat 7/12

11:20 am-2:07 pm

Nonstop2h 47m

$141

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Fri 10/24

1:40 pm-4:20 pm

Nonstop2h 40m

San Juan Luis Munoz Marin Intl

Tue 10/28

3:55 pm-6:50 pm

Nonstop2h 55m

$166

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Sun 9/14

7:00 am-1:15 pm

1 stop6h 15m

San Juan Luis Munoz Marin Intl

Wed 9/17

5:00 am-4:40 pm

2 stops11h 40m

$254

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Wed 10/1

2:35 pm-10:08 pm

1 stop7h 33m

San Juan Luis Munoz Marin Intl

Mon 10/6

7:30 am-5:12 pm

1 stop9h 42m

$319

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Wed 10/1

6:17 pm-12:46 pm

2 stops18h 29m

San Juan Luis Munoz Marin Intl

Mon 10/6

12:00 pm-4:29 pm

1 stop4h 29m

$365

MiamiCulebra

MIA - CPX

MIACPX

Miami

Fri 7/11

4:51 pm-4:51 pm

2 stops24h 00m

Culebra

Tue 7/15

10:13 am-4:21 pm

1 stop6h 08m

$430

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Fri 7/11

10:02 am-1:35 am

1 stop15h 33m

San Juan Luis Munoz Marin Intl

Tue 7/15

3:50 pm-3:05 pm

3 stops23h 15m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/23

Showing 1-10 of 29 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 June 26, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,276 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,276 reviews
Southwest
8.0
Very good
4,276 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,963 reviews
Southwest
8.0
Very good
4,276 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,838 reviews
Southwest
8.0
Very good
4,276 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,276 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Spirit Airlines
6.3
Okay
8,088 reviews
Southwest
8.0
Very good
4,276 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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.

  • 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 Frontier. You may also be able to find cheap deals on Spirit Airlines and Southwest, with prices starting from $78 and $88, 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.

  • What is the cheapest month to book a flight from Florida Keys to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Florida Keys to Puerto Rico (average of $254). Flying from Florida Keys to Puerto Rico in June is currently the most expensive (average of $339). 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.

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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$246Average$448FlexibilityNo cancel feeOn-time71%

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