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$263+ Cheap flights from Key West (EYW) 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SJU
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap 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 July 31, 2025.

Round-trip from

$365
(American Airlines)

One-way from

$233
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$448
From Key West to Puerto Rico
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One-way flight from Key West to Puerto Rico
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Highest demand for flights based on searches. 6% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/30. 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 10/11:59 pmEYW - SJU
1 stop4h 15mAmerican Airlines
Mon 10/67:00 amSJU - EYW
1 stop10h 16mAmerican Airlines
Deal found 7/30$365
This Mytrip deal was found by Cheapflights users on 7/30. 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 8/1410:02 amEYW - SJU
1 stop14h 54mMultiple Airlines
Sun 8/172:11 amSJU - EYW
1 stop10h 56mMultiple Airlines
Deal found 7/30$567
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/142:22 pmEYW - SJU
2 stops33h 32mUnited Airlines
Mon 8/187:45 amSJU - EYW
2 stops30h 40mUnited Airlines
Deal found 7/30$1,229

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 July 31, 2025.
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

Wed 10/1

1:59 pm-6:14 pm

1 stop4h 15m

San Juan Luis Munoz Marin Intl

Mon 10/6

7:00 am-5:16 pm

1 stop10h 16m

$365

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Wed 8/13

10:02 am-4:42 pm

3 stops30h 40m

San Juan Luis Munoz Marin Intl

Sat 8/16

2:11 am-1:07 pm

1 stop10h 56m

$559

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/14

2:22 pm-11:54 pm

2 stops33h 32m

San Juan Luis Munoz Marin Intl

Mon 8/18

7:45 am-2:25 pm

2 stops30h 40m

$1,229

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/14

12:50 pm-10:56 pm

1 stop10h 06m

$263

Key WestSan Juan

EYW - SJU

EYWSJU

Key West

Thu 8/14

10:02 am-2:17 pm

2 stops28h 15m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 July 31, 2025.
Read through reviews of airlines operating flights from Key West to Puerto Rico, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,900 reviews

Entertainment

7.1

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,900 reviews
United Airlines
7.4
Good
8,900 reviews

Entertainment

7.1

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,900 reviews

Entertainment

7.1

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What is the cheapest month to book a flight from Key West to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Key West to Puerto Rico (average of $254). Flying from Key West 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

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See prices for flight routes from nearby airports that may be better suited for you.
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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$304Average$455FlexibilityNo cancel feeOn-time71%

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