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Cheap flights from Philadelphia to San Juan from $89

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to San Juan departing on 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Philadelphia to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:02 pm - 8:49 pmPHL-SJU
3h 47mnonstop
Frontier Logo
1:59 am - 5:04 amSJU-PHL
4h 05mnonstop
$174Frontier
Find Deal
Fri, Nov 28 - Tue, Dec 9
Multiple Airlines Logo
4:02 pm - 8:49 pmPHL-SJU
3h 47mnonstop
Multiple Airlines Logo
5:00 pm - 2:58 pmSJU-PHL
22h 58m2 stops
$175Multiple Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 9
Frontier Logo
4:02 pm - 8:49 pmPHL-SJU
3h 47mnonstop
Frontier Logo
11:57 am - 3:02 pmSJU-PHL
4h 05mnonstop
$176Frontier
Find Deal
Fri, Nov 28 - Fri, Dec 5
Frontier Logo
10:30 am - 11:54 pmPHL-SJU
12h 24m1 stop
Frontier Logo
2:25 am - 5:32 amSJU-PHL
4h 07mnonstop
$178Frontier
Find Deal
Mon, Nov 24 - Mon, Nov 24
Frontier Logo
8:37 pm - 1:24 amPHL-SJU
3h 47mnonstop
Frontier Logo
6:59 pm - 12:55 amSJU-PHL
6h 56m1 stop
$179Frontier
Find Deal
Sun, Jan 11 - Fri, Jan 16
Frontier Logo
8:08 pm - 12:55 amPHL-SJU
3h 47mnonstop
Frontier Logo
2:25 am - 5:32 amSJU-PHL
4h 07mnonstop
$180Frontier
Find Deal
Fri, Nov 21 - Mon, Nov 24
Multiple Airlines Logo
8:08 pm - 12:55 amPHL-SJU
3h 47mnonstop
Multiple Airlines Logo
4:10 am - 2:44 pmSJU-PHL
11h 34m1 stop
$181Multiple Airlines
Find Deal
Tue, Nov 25 - Mon, Dec 8
Frontier Logo
8:08 pm - 12:55 amPHL-SJU
3h 47mnonstop
Frontier Logo
9:54 pm - 1:01 amSJU-PHL
4h 07mnonstop
$182Frontier
Find Deal
Fri, Nov 21 - Wed, Nov 26
Frontier Logo
8:02 pm - 12:49 amPHL-SJU
3h 47mnonstop
Frontier Logo
10:42 am - 4:38 pmSJU-PHL
6h 56m1 stop
$183Frontier
Find Deal
Thu, Dec 4 - Mon, Dec 8
Frontier Logo
5:50 pm - 9:40 amPHL-SJU
14h 50m1 stop
Frontier Logo
2:25 am - 5:32 amSJU-PHL
4h 07mnonstop
$184Frontier
Find Deal
Sun, Nov 23 - Mon, Nov 24

Frontier flights from Philadelphia to San Juan Luis Munoz Marin Intl Airport

Our best Frontier deals on Philadelphia to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Nov 28
PHL4:02 pmPhiladelphia
3h 47m
SJU8:49 pmSan Juan Luis Munoz Marin Intl
Dec 9
SJU1:59 amSan Juan Luis Munoz Marin Intl
4h 05m
PHL5:04 amPhiladelphia
$174
Find similar
Frontier
Nov 28
PHL4:02 pmPhiladelphia
3h 47m
SJU8:49 pmSan Juan Luis Munoz Marin Intl
Dec 5
SJU11:57 amSan Juan Luis Munoz Marin Intl
4h 05m
PHL3:02 pmPhiladelphia
$176
Find similar
Frontier
Nov 24
PHL10:30 amPhiladelphia
12h 24m
1 stop
SJU11:54 pmSan Juan Luis Munoz Marin Intl
Nov 24
SJU2:25 amSan Juan Luis Munoz Marin Intl
4h 07m
PHL5:32 amPhiladelphia
$178
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated October 31, 2025.
Use the filters below to find and compare flights from Philadelphia to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Fri 11/28

4:02 pm-8:49 pm

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Tue 12/9

1:59 am-5:04 am

Nonstop4h 05m

$174

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 11/25

4:02 pm-8:49 pm

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Tue 12/9

5:00 pm-2:58 pm

2 stops22h 58m

$175

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Fri 11/28

4:02 pm-8:49 pm

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Fri 12/5

11:57 am-3:02 pm

Nonstop4h 05m

$176

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Mon 11/24

10:30 am-11:54 pm

1 stop12h 24m

San Juan Luis Munoz Marin Intl

Mon 11/24

2:25 am-5:32 am

Nonstop4h 07m

$178

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sun 1/11

8:37 pm-1:24 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Fri 1/16

6:59 pm-12:55 am

1 stop6h 56m

$179

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Fri 11/21

8:08 pm-12:55 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Mon 11/24

2:25 am-5:32 am

Nonstop4h 07m

$180

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 11/25

8:08 pm-12:55 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Mon 12/8

4:10 am-2:44 pm

1 stop11h 34m

$181

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Fri 11/21

8:08 pm-12:55 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Wed 11/26

9:54 pm-1:01 am

Nonstop4h 07m

$182

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 12/4

8:02 pm-12:49 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Mon 12/8

10:42 am-4:38 pm

1 stop6h 56m

$183

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sun 11/23

5:50 pm-9:40 am

1 stop14h 50m

San Juan Luis Munoz Marin Intl

Mon 11/24

2:25 am-5:32 am

Nonstop4h 07m

$184

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Philadelphia to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of October, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $248.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Philadelphia is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $281. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Philadelphia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $310.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the evening when flights can be purchased for as low as $278. Flights at noon are often more expensive with an average ticket price of $359.

What is the cheapest Philadelphia to San Juan Luis Munoz Marin Intl flight route?

Fly from Philadelphia to San Juan Luis Munoz Marin Intl for the best Philadelphia - San Juan Luis Munoz Marin Intl flight prices

How far in advance should I book a flight to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $279 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Philadelphia for as low as $245 on momondo.

What cabin class options are available on Philadelphia to San Juan Luis Munoz Marin Intl flights?

There are 3 cabin classes available to choose from on Philadelphia to San Juan Luis Munoz Marin Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to San Juan Luis Munoz Marin Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Philadelphia to San Juan Luis Munoz Marin Intl Airport.

How have Philadelphia to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of October 2025, prices for Philadelphia to San Juan Luis Munoz Marin Intl Airport flights are approximately 20% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to San Juan Luis Munoz Marin Intl Airport (PHL to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$153

Fastest flight time

3h 40m

Direct flights

Every day
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Philadelphia in the past 72 hours is $153. The best round-trip flight deal from Philadelphia to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $288.
The fastest flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport takes 3h 40m
Direct flights go from Philadelphia to San Juan Luis Munoz Marin Intl Airport every day.
Search flight deals

  • How far is Philadelphia to San Juan Luis Munoz Marin Intl by plane?

    A flight from Philadelphia to San Juan Luis Munoz Marin Intl will travel around 1582.4 mi. Flights usually cover this in 3h 40m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Philadelphia Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Philadelphia Airport to San Juan Luis Munoz Marin Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Philadelphia Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Philadelphia Airport to San Juan Luis Munoz Marin Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The travel and health documents required for your trip to San Juan Luis Munoz Marin Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan Luis Munoz Marin Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

  • What is the most popular airline from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Philadelphia to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Philadelphia to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Avelo AirlinesPriceFrom $100Free CancellationRating
7.5
82 reviews
Search Avelo Airlines flights
Spirit AirlinesPriceFrom $130Free CancellationRating
6.3
8,116 reviews
Search Spirit Airlines flights
FrontierPriceFrom $148Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
SouthwestPriceFrom $213Free CancellationRating
8.0
4,243 reviews
Search Southwest flights
DeltaPriceFrom $215Free CancellationRating
7.9
7,998 reviews
Search Delta flights
American AirlinesPriceFrom $244Free CancellationRating
7.2
11,034 reviews
Search American Airlines flights
JetBluePriceFrom $289Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
United AirlinesPriceFrom $420Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

  • American Airlines Flights From Philadelphia to San Juan Luis Munoz Marin Intl Airport

    American Airlines flight deals from Philadelphia to San Juan Luis Munoz Marin Intl Airport start from $244 round-trip. Over the 2 American Airlines flights for this route in a normal week, average airfare is usually $472 round-trip - but some users have found much cheaper deals with momondo.

  • Frontier Flights From Philadelphia to San Juan Luis Munoz Marin Intl Airport

    Frontier is also a popular choice for this route. Frontier flight deals for Philadelphia to San Juan Luis Munoz Marin Intl Airport start from as low as $148 round-trip, depending on your selected dates, with average Frontier deals seen on momondo around $281. Frontier operates 7 flights to San Juan Luis Munoz Marin Intl Airport from Philadelphia in an average week. Users have rated it 5.8/10 across 3,123 reviews.

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Caguas
Humacao
Rio Grande
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to San Juan?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Juan from Philadelphia.

Can I find flights from Philadelphia to San Juan with flexible booking policies on momondo?

Yes. All flights to San Juan from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Philadelphia to San Juan?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Juan from Philadelphia.

I’m not ready to book a flight from Philadelphia to San Juan right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Philadelphia to San Juan flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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