HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Puerto Rico

$293+ Cheap flights from Key West (EYW) to Puerto Rico

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SJU
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key West 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

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 Key West to Puerto Rico

Cheapest flights from Key West to Puerto Rico
Explore the most affordable flight options available from Key West to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 5, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/59:46 am
EYW
-
SJU
1 stop12h 23m
Multiple Airlines
Mon 3/95:30 am
SJU
-
EYW
1 stop9h 23m
Multiple Airlines
Deal found 2/2$293
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 3/239:49 am
EYW
-
SJU
1 stop24h 21m
Multiple Airlines
Sat 3/288:47 pm
SJU
-
EYW
1 stop18h 55m
Multiple Airlines
Deal found 2/4$325
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/171:01 pm
EYW
-
SJU
2 stops35h 23m
Multiple Airlines
Sat 2/2111:52 am
SJU
-
EYW
1 stop22h 14m
Multiple Airlines
Deal found 2/2$344
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:25 pm
EYW
-
SJU
3 stops31h 44m
Spirit Airlines
Sun 3/81:59 am
SJU
-
EYW
2 stops11h 31m
Spirit Airlines
Deal found 2/2$419
This Mytrip deal was found by Cheapflights users on 2/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/232:35 pm
EYW
-
SJU
2 stops18h 18m
Spirit Airlines
Sat 3/288:47 pm
SJU
-
EYW
2 stops14h 43m
Spirit Airlines
Deal found 2/4$436
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:55 pm
EYW
-
SJU
1 stop8h 39m
American Airlines
Fri 3/610:50 am
SJU
-
EYW
1 stop9h 25m
American Airlines
Deal found 2/3$446
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/157:42 pm
EYW
-
SJU
1 stop15h 14m
American Airlines
Sun 3/227:11 am
SJU
-
EYW
1 stop12h 01m
American Airlines
Deal found 2/2$486

Find flight deals from Key West to Puerto Rico

Keep the following information in mind while searching for Key West to Puerto Rico flight deals. Data was last updated February 5, 2026.

Round-trip from

$268
(Kiwi.com)

Popular in

March

Cheapest in

April

Average price

$495
From Key West to Puerto Rico
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key West 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 February 5, 2026.
Use the filters below to find and compare flights from Key West to Puerto Rico that are best for you.

Fly from

Key West

Fly to

Puerto Rico

Route

Depart

Return

Price

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 3/5

9:46 am-11:09 pm

1 stop12h 23m

San Juan Luis Munoz Marin Intl

Mon 3/9

5:30 am-2:53 pm

1 stop9h 23m

$293

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Mon 3/23

9:49 am-10:10 am

1 stop24h 21m

San Juan Luis Munoz Marin Intl

Sat 3/28

8:47 pm-3:42 pm

1 stop18h 55m

$325

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Tue 2/17

1:01 pm-1:24 am

2 stops35h 23m

San Juan Luis Munoz Marin Intl

Sat 2/21

11:52 am-9:06 am

1 stop22h 14m

$344

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 3/5

2:25 pm-11:09 pm

3 stops31h 44m

San Juan Luis Munoz Marin Intl

Sun 3/8

1:59 am-1:30 pm

2 stops11h 31m

$419

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Mon 3/23

2:35 pm-8:53 am

2 stops18h 18m

San Juan Luis Munoz Marin Intl

Sat 3/28

8:47 pm-11:30 am

2 stops14h 43m

$436

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Fri 2/27

1:55 pm-11:34 pm

1 stop8h 39m

San Juan Luis Munoz Marin Intl

Fri 3/6

10:50 am-7:15 pm

1 stop9h 25m

$446

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Sat 2/14

3:51 pm-11:34 pm

1 stop6h 43m

San Juan Luis Munoz Marin Intl

Sun 2/22

8:00 am-7:15 pm

1 stop12h 15m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Best time to book a flight from Key West to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Key West 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 Key West 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 February 5, 2026.
Read through reviews of airlines operating flights from Key West to Puerto Rico, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,222 reviews

Crew

8.0

Overall

7.2

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Food

6.4

Reviews

1 / 20
4.0
Okay

Susie,Jan 2026

TPA - CLT

I was sitting at the back of the plane and the flight attendants were so loud, talking to each other and laughing! I thought they were having a party back there.
American Airlines
7.2
Good
11,222 reviews
American Airlines
7.2
Good
11,222 reviews

Crew

8.0

Overall

7.2

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Food

6.4

Reviews

1 / 20
4.0
Okay

Susie,Jan 2026

TPA - CLT

I was sitting at the back of the plane and the flight attendants were so loud, talking to each other and laughing! I thought they were having a party back there.

Related info for your journey

Find useful and relevant information for your journey from Key West 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 airport do you fly from for flights from Key West to Puerto Rico?

    If you book a flight to Puerto Rico from Key West, you will be flying from Key West, which is the city’s only airport. Key West (EYW) is located 2.6 mi from the center of Key West.

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

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

  • How can I find direct flights from Key West to Puerto Rico?

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

  • Can I find deals for business class flights from Key West to Puerto Rico?

    Yes. Cheapflights offers flight deals from Key West 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

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

Alternative routes for Key West to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
Fort Lauderdale to Luis Munoz Marin Intl flights
Orlando to Luis Munoz Marin Intl flights
Miami to Luis Munoz Marin Intl flights
Tampa to Luis Munoz Marin Intl flights
Orlando to Punta Cana flights
Fort Lauderdale to Punta Cana flights
Miami to Punta Cana flights
Miami to Nassau flights
Orlando to Santo Domingo flights
Fort Lauderdale to Nassau flights
Fort Lauderdale to Santo Domingo flights
Fort Lauderdale to Kingston flights
Fort Lauderdale to Montego Bay flights
Orlando to Aguadilla flights
Orlando to Montego Bay flights
Miami to Havana flights
West Palm Beach to Luis Munoz Marin Intl flights
Miami to Providenciales flights
Miami to Oranjestad flights
Miami to Simpson Bay flights
Jacksonville to Luis Munoz Marin Intl flights
Miami to Port of Spain flights
Miami to Willemstad flights
Miami to Santo Domingo flights
Orlando to Saint Thomas Island flights
Miami to Castries flights
Fort Lauderdale to Simpson Bay flights
Tampa to Punta Cana flights
Orlando to Santiago de los Caballeros flights
Orlando to Nassau flights
Orlando to Oranjestad flights
Orlando to Ponce flights
Fort Lauderdale to Oranjestad flights
Miami to Montego Bay flights
Miami to Saint Thomas Island flights
Fort Lauderdale to Saint Thomas Island flights
Fort Lauderdale to Santiago de los Caballeros flights
Miami to Kingston flights
Miami to Bridgetown flights
Miami to Santiago de los Caballeros flights
Fort Lauderdale to Marsh Harbour flights
Miami to St. John's flights
Tampa to George Town flights
Tampa to Nassau flights
Miami to George Town flights
Fort Lauderdale to Aguadilla flights
Tampa to Castries flights
Tampa to Saint Thomas Island flights
Orlando to Simpson Bay flights
Pensacola to Luis Munoz Marin Intl flights

Top airline flying from Key West to Puerto Rico

Discover the top airline that operate flights from Key West 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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$376Average$495FlexibilityNo cancel feeOn-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.
Site
©2026 Cheapflights