What are the cheapest airlines to fly from Florida Keys to San Juan one-way?

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $75. Spirit Airlines flights start at $78 while deals on Southwest start at $88 one-way.

What is the cheapest month to book a flight from Florida Keys to San Juan?

Currently, September is the cheapest month in which you can book a flight from Florida Keys to San Juan (average of $254). Flying from Florida Keys to San Juan 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.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

How far in advance should I book a flight from Florida Keys to San Juan?

Travelers have found it’s best to book a flight 52 days in advance to save up to 75% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 52 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Florida Keys to San Juan 1-2 weeks in advance for as low as $137, or $216 for flights within the next 24 hours.

What is the cheapest month to fly from Florida Keys to San Juan?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to San Juan. Flights to San Juan from Florida Keys in September are about $182 on average during September, but can be found for as low as $59.

What is the cheapest time of day to fly from EOA to SJU?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Florida Keys to San Juan as you normally would.

Can I find deals for flights from Florida Keys to San Juan that include hotel bookings?

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

How can I find direct flights from Florida Keys to San Juan?

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

Can I find deals for business class flights from Florida Keys to San Juan?

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

$75+ Flights from Florida Keys to San Juan

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Florida Keys to San Juan 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.

Cheap flight deals from Florida Keys to San Juan

Round-trip from	$135 (CheapOair)
One-way from	$75 (FlightHub)

From Florida Keys to San Juan

Search Deals

One-way flight from Florida Keys to San Juan

Search Deals

Find flight deals from Florida Keys to San Juan

Cheapest flights from Florida Keys to San Juan
Explore the most affordable flight options available from Florida Keys to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

Tue 7/16:33 pmMIA - SJU

Nonstop2h 31mSpirit Airlines

Tue 7/88:45 pmSJU - MIA

Nonstop2h 52mSpirit Airlines

Deal found 6/24

$135

Fri 9/195:30 amMIA - SJU

Nonstop2h 40mFrontier

Mon 9/229:39 pmSJU - MIA

Nonstop2h 50mFrontier

Deal found 6/25

$138

Thu 7/1010:10 amMIA - SJU

Nonstop2h 26mMultiple Airlines

Thu 7/175:15 pmSJU - MIA

Nonstop2h 49mMultiple Airlines

Deal found 6/25

$140

Fri 9/125:25 pmMIA - SJU

1 stop6h 25mSouthwest

Sun 9/145:05 amSJU - MIA

1 stop6h 25mSouthwest

Deal found 6/26

$175

Fri 10/241:40 pmMIA - SJU

Nonstop2h 40mAmerican Airlines

Tue 10/283:55 pmSJU - MIA

Nonstop2h 55mAmerican Airlines

Deal found 6/26

$198

Wed 10/12:35 pmEYW - SJU

1 stop7h 33mDelta

Mon 10/67:30 amSJU - EYW

1 stop9h 42mDelta

Deal found 6/26

$319

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

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

Best flights from Florida Keys to San Juan
Discover carefully curated flight deals from Florida Keys to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 26, 2025.

Tue 7/16:33 pmMIA - SJU

Nonstop2h 31mSpirit Airlines

Tue 7/88:45 pmSJU - MIA

Nonstop2h 52mSpirit Airlines

Deal found 6/24

$135

Fri 9/195:30 amMIA - SJU

Nonstop2h 40mFrontier

Mon 9/229:39 pmSJU - MIA

Nonstop2h 50mFrontier

Deal found 6/24

$138

Thu 7/1010:10 amMIA - SJU

Nonstop2h 26mMultiple Airlines

Thu 7/175:15 pmSJU - MIA

Nonstop2h 49mMultiple Airlines

Deal found 6/25

$140

Sun 9/147:00 amMIA - SJU

1 stop6h 15mSouthwest

Wed 9/175:00 amSJU - MIA

2 stops11h 40mSouthwest

Deal found 6/25

$254

Wed 10/12:35 pmEYW - SJU

1 stop7h 33mDelta

Mon 10/67:30 amSJU - EYW

1 stop9h 42mDelta

Deal found 6/26

$319

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

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

Last-minute flights from Florida Keys to San Juan
Discover last-minute flight deals from Florida Keys to San Juan. Data last updated June 26, 2025 and is based on user searches.

Tue 7/16:33 pmMIA - SJU

Nonstop2h 31mSpirit Airlines

Tue 7/88:45 pmSJU - MIA

Nonstop2h 52mSpirit Airlines

Deal found 6/24

$135

Tue 7/13:40 pmMIA - SJU

Nonstop2h 49mMultiple Airlines

Wed 7/91:31 pmSJU - MIA

Nonstop2h 50mMultiple Airlines

Deal found 6/25

$146

Tue 7/16:15 amMIA - SJU

1 stop11h 10mSouthwest

Wed 7/96:30 amSJU - MIA

1 stop9h 50mSouthwest

Deal found 6/25

$254

Wed 7/23:40 pmMIA - SJU

Nonstop2h 49mFrontier

Thu 7/105:15 pmSJU - MIA

Nonstop2h 49mFrontier

Deal found 6/25

$147

Thu 7/1010:10 amMIA - SJU

Nonstop2h 26mMultiple Airlines

Thu 7/175:15 pmSJU - MIA

Nonstop2h 49mMultiple Airlines

Deal found 6/25

$140

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

Fri 7/1111:18 amEYW - SJU

1 stop6h 52mAmerican Airlines

Mon 7/1412:59 amSJU - EYW

1 stop15h 13mAmerican Airlines

Deal found 6/26

$525

Thu 7/1712:45 pmMIA - SJU

1 stop11h 45mSouthwest

Sun 7/205:30 amSJU - MIA

2 stops9h 55mSouthwest

Deal found 6/25

$254

One-way flights from Florida Keys to San Juan
Search for one-way flight options from Florida Keys to San Juan. Find affordable one-way fares based on user searches. Data last updated June 26, 2025.

Sun 9/213:55 pmMIA - SJU

Nonstop2h 50mFrontier

Deal found 6/26

$75

Mon 7/76:33 pmMIA - SJU

Nonstop2h 31mSpirit Airlines

Deal found 6/24

$78

Fri 8/295:25 pmMIA - SJU

1 stop6h 25mSouthwest

Deal found 6/26

$88

Wed 9/242:03 pmMIA - SJU

1 stop8h 05mDelta

Deal found 6/25

$108

Tue 9/29:20 pmMIA - SJU

Nonstop2h 39mAmerican Airlines

Deal found 6/24

$116

Tue 7/112:20 pmMIA - SJU

1 stop11h 34mUnited Airlines

Deal found 6/24

$213

Fri 7/1111:18 amEYW - SJU

1 stop6h 52mAmerican Airlines

Deal found 6/26

$263

Fri 7/1110:02 amEYW - SJU

2 stops25h 30mMultiple Airlines

Deal found 6/26

$293

Mon 12/224:05 pmEYW - SJU

3 stops21h 35mUnited Airlines

Deal found 6/25

$866

Cheapflights Fare Finder

Use the filters below to find and compare flights from Florida Keys to San Juan that are best for you.

Fly from

Fly to

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

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

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

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Sun 9/21

3:55 pm-6:45 pm

Nonstop2h 50m

$75

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Mon 7/7

6:33 pm-9:04 pm

Nonstop2h 31m

$78

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 17 results

Best time to book a flight from Florida Keys to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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 San Juan

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing San Juan

See what other customers who have flown with Southwest, Delta, and United Airlines from Florida Keys to San Juan have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,276 reviews

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

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

7,964 reviews

Southwest

8.0

Very good

4,276 reviews

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

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

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

8,089 reviews

Southwest

8.0

Very good

4,276 reviews

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

What are the cheapest airlines to fly from Florida Keys to San Juan one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $75. Spirit Airlines flights start at $78 while deals on Southwest start at $88 one-way.
Can I find deals for flights from Florida Keys to San Juan that include hotel bookings?
Yes. In addition to deals on Florida Keys to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Florida Keys to San Juan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Florida Keys to San Juan.
Can I find deals for business class flights from Florida Keys to San Juan?
Yes. Cheapflights offers flight deals from Florida Keys to San Juan 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 San Juan?
Currently, September is the cheapest month in which you can book a flight from Florida Keys to San Juan (average of $254). Flying from Florida Keys to San Juan 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

Alternative routes for Florida Keys to San Juan

Orlando to Luis Munoz Marin Intl flights

Fort Lauderdale to Luis Munoz Marin Intl flights

Miami to Luis Munoz Marin Intl flights

Tampa to Luis Munoz Marin Intl flights

Orlando to Ponce flights

Orlando to Aguadilla flights

Jacksonville to Luis Munoz Marin Intl flights

West Palm Beach to Luis Munoz Marin Intl flights

Fort Lauderdale to Aguadilla flights

Fort Myers to Luis Munoz Marin Intl flights

Pensacola to Luis Munoz Marin Intl flights

Tallahassee to Luis Munoz Marin Intl flights

Sarasota to Luis Munoz Marin Intl flights

Daytona Beach to Luis Munoz Marin Intl flights

Valparaiso to Luis Munoz Marin Intl flights

Panama City to Luis Munoz Marin Intl flights

Melbourne to Luis Munoz Marin Intl flights

Tampa to Aguadilla flights

Orlando to Mayagüez flights

Gainesville to Luis Munoz Marin Intl flights

Tampa to Mayagüez flights

Miami to Vieques flights

Key West to Luis Munoz Marin Intl flights

Orlando to Vieques flights

Fort Lauderdale to Mayagüez flights

Orlando Sanford Intl to Luis Munoz Marin Intl flights

Miami to Mayagüez flights

Tampa to Culebra flights

Jacksonville to Aguadilla flights

Fort Myers to Aguadilla flights

Orlando to Culebra flights

Jacksonville to Culebra flights

Fort Myers to Mayagüez flights

Miami to Culebra flights

Tampa to Ponce flights

Jacksonville to Vieques flights

Pensacola to Vieques flights

Pensacola to Ponce flights

Fort Lauderdale to Vieques flights

Fort Lauderdale to Ponce flights

Pensacola to Aguadilla flights

Fort Lauderdale to Culebra flights

Miami to Aguadilla flights

Complete your trip

San Juan car rentals

San Juan Luis Munoz Marin Intl Airport car rentals

Ponce Mercedita Airport car rentals

San Juan Isla Grande Airport car rentals

Vieques Airport car rentals

Aguadilla car rentals

Ponce car rentals

Condado car rentals

Santurce car rentals

San Juan Antiguo car rentals

Hato Rey Sur car rentals

Hato Rey Norte car rentals

Top airline flying from Florida Keys to San Juan

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$246	Average$448	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$75+ Cheap flights from Florida Keys to San Juan

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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Florida Keys to San Juan with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Florida Keys to San Juan

Keep the following information in mind while searching for Florida Keys to San Juan flight deals. Data was last updated June 26, 2025.

Round-trip from

One-way from

Find flight deals from Florida Keys to San Juan

Cheapest flights from Florida Keys to San JuanExplore the most affordable flight options available from Florida Keys to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

Explore the most affordable flight options available from Florida Keys to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Florida Keys to San Juan that are best for you.

Best time to book a flight from Florida Keys to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Florida Keys with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Florida Keys to San Juan

Reviews of airlines servicing San Juan

See what other customers who have flown with Southwest, Delta, and United Airlines from Florida Keys to San Juan have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Florida Keys to San Juan. 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 San Juan one-way?

Can I find deals for flights from Florida Keys to San Juan that include hotel bookings?

How can I find direct flights from Florida Keys to San Juan?

Can I find deals for business class flights from Florida Keys to San Juan?

What is the cheapest month to book a flight from Florida Keys to San Juan?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Florida Keys to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Florida Keys to San Juan

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Florida Keys to San Juan
Explore the most affordable flight options available from Florida Keys to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.