$74 Cheap Flights from Philadelphia (PHL) to San Juan (SJU)

View $74 flight on Mon, Mar 16, 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)

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Cheap Flights from Philadelphia to San Juan (PHL-SJU)

Prices were available within the past 7 days and start at $74 for one-way flights and $148 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sun, Mar 22 - Thu, Mar 26
PHL
Philadelphia
SJU
San Juan
$148 Roundtrip, just found
$148
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Mar 22 from Philadelphia to San Juan, returning Thu, Mar 26, priced at $148 just found
Frontier Airlines
Tue, Mar 24 - Wed, Apr 15
PHL
Philadelphia
SJU
San Juan
$154 Roundtrip, found 1 day ago
$154
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Mar 24 from Philadelphia to San Juan, returning Wed, Apr 15, priced at $154 found 1 day ago
Frontier Airlines
Sun, Apr 26 - Tue, May 5
PHL
Philadelphia
SJU
San Juan
$160 Roundtrip, just found
$160
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Apr 26 from Philadelphia to San Juan, returning Tue, May 5, priced at $160 just found
Frontier Airlines
Mon, Mar 16 - Fri, May 15
PHL
Philadelphia
SJU
San Juan
$162 Roundtrip, found 1 day ago
$162
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Mar 16 from Philadelphia to San Juan, returning Fri, May 15, priced at $162 found 1 day ago
Frontier Airlines
Mon, May 4 - Tue, May 5
PHL
Philadelphia
SJU
San Juan
$165 Roundtrip, found 6 hours ago
$165
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, May 4 from Philadelphia to San Juan, returning Tue, May 5, priced at $165 found 6 hours ago
Frontier Airlines
Sun, Mar 15 - Tue, Apr 14
PHL
Philadelphia
SJU
San Juan
$168 Roundtrip, found 2 days ago
$168
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Mar 15 from Philadelphia to San Juan, returning Tue, Apr 14, priced at $168 found 2 days ago
Spirit Airlines
Tue, Mar 10 - Thu, Mar 26
PHL
Philadelphia
SJU
San Juan
$182 Roundtrip, found 18 hours ago
$182
Roundtrip
found 18 hours ago
Select Spirit Airlines flight, departing Tue, Mar 10 from Philadelphia to San Juan, returning Thu, Mar 26, priced at $182 found 18 hours ago
Delta
Tue, Apr 28 - Wed, Apr 29
PHL
Philadelphia
SJU
San Juan
$267 Roundtrip, found 6 hours ago
$267
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, Apr 28 from Philadelphia to San Juan, returning Wed, Apr 29, priced at $267 found 6 hours ago
United
Sun, Apr 19 - Thu, Apr 23
PHL
Philadelphia
SJU
San Juan
$272 Roundtrip, just found
$272
Roundtrip
just found
Select United flight, departing Sun, Apr 19 from Philadelphia to San Juan, returning Thu, Apr 23, priced at $272 just found
JetBlue Airways
Wed, Nov 4 - Tue, Nov 10
PHL
Philadelphia
SJU
San Juan
$275 Roundtrip, just found
$275
Roundtrip
just found
Select JetBlue Airways flight, departing Wed, Nov 4 from Philadelphia to San Juan, returning Tue, Nov 10, priced at $275 just found

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Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $224
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city center16 min
Flights from $224

Find the cheapest month to fly from Philadelphia (PHL) to San Juan (SJU)

February is typically the cheapest month to fly

From $117 - $206 per traveler.

Frequently asked questions

How much does a flight from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) cost?
You can find cheap one-way flights from $74 and cheap return flights from $148 Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) with Expedia. One-way flights typically cost between $162 and $829, and return flights often range between $324 and $4250. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The cheapest month to fly from PHL to SJU is March when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
4 airlines operate nonstop service from PHL to SJU:

  • American Airlines operates around 19 direct flights from PHL to SJU every week
  • Frontier Airlines operates around 20 direct flights from PHL to SJU every week
  • Spirit Airlines operates around 9 direct flights from PHL to SJU every week
  • JetBlue Airways operates around 7 direct flights from PHL to SJU every week

What is the cheapest airline that flies from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Spirit Airlines is one of the cheapest airlines offering connecting flights from Philadelphia, PA (PHL) to San Juan (SJU), with round-trip tickets starting from around $396. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
To find a cheap flight from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The best airline to fly with from Philadelphia, PA (PHL) to San Juan (SJU) will differ from traveler to traveler. If you like to fly early, Spirit Airlines offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. American Airlines offers the most daily flights from Philadelphia to San Juan, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
On average, there are around 7 nonstop flights per day from Philadelphia Intl. (PHL) to Luis Munoz Marin Intl. (SJU). For more options, look at flights that include layovers.
What is the earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) typically departs at around 12:55 AM, operated by American Airlines. This is a seasonal service active in November. An early departure can help you maximize your time in San Juan. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The most popular departure times for flights from Philadelphia International Airport (PHL) to San Juan (SJU) are in the early morning, from 6am to 9am. About 41% of passengers prefer this time window. Many major carriers, including American Airlines, Frontier Airlines, and others, offer flights during this window. This timing works well because it allows you to start your day early and maximize your time in San Juan.
How long does it take to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
A nonstop flight from PHL to SJU typically takes around 3 hours 50 minutes, covering approximately 1,580 miles. Connecting flights on this route usually add 2 hours 40 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Business class seats are offered on the PHL to SJU route with American Airlines.First class cabins are available on:

  • Delta Air Lines
  • Spirit Airlines
  • United Airlines

How much is a business class flight from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
A direct, return business class ticket from Philadelphia Intl. Airport (PHL) to San Juan (SJU) typically costs between $1,172 - $1,908. A non-stop, one-way business class flight is usually around $518 - $588 per adult. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight with Expedia?
It's easy to earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Juan from Philadelphia Intl. (PHL)?
If you're planning to travel to San Juan from Philadelphia Intl. (PHL), you can fly into Luis Munoz Marin Intl. (SJU) Some flights may connect through major hubs like O'Hare Intl. (ORD), Washington Dulles Intl. (IAD), Midway Intl. (MDW) before reaching San Juan. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) at the last minute?
Typically, booking a last minute flight from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight and hotel package?
Securing a Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
If you booked your Philadelphia, PA (PHL-Philadelphia Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$148
Distance
1580 mi
Average flight time
4 hours 50 mins

Book with confidence

Philadelphia to San Juan Flights

The cheapest times to fly from Philadelphia to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to San Juan are during the month of March. You can find some of the cheapest flights from Philadelphia to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to San Juan

Sunday is one of the best days to book for cheap flights from Philadelphia to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to San Juan in 2026. You can also book with separate airlines for your outbound and return journeys, from $74 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Philadelphia to San Juan Flights

*Flight schedules are subject to change.

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