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Cheap flights from Philadelphia to San Juan from $84

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 9/27. 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

Frontier Logo
8:43 pm - 12:29 amPHL-SJU
3h 46mnonstop
Frontier Logo
12:11 pm - 4:09 pmSJU-PHL
3h 58mnonstop
$153Frontier
Find Deal
Thu, Oct 16 - Thu, Oct 23
Frontier Logo
8:10 am - 12:01 pmPHL-SJU
3h 51mnonstop
Frontier Logo
1:59 am - 5:57 amSJU-PHL
3h 58mnonstop
$154Frontier
Find Deal
Sat, Oct 4 - Wed, Oct 8
Frontier Logo
8:43 pm - 12:29 amPHL-SJU
3h 46mnonstop
Frontier Logo
1:59 am - 5:57 amSJU-PHL
3h 58mnonstop
$155Frontier
Find Deal
Tue, Oct 7 - Fri, Oct 10
Frontier Logo
8:43 pm - 12:29 amPHL-SJU
3h 46mnonstop
Frontier Logo
6:22 am - 6:44 pmSJU-PHL
12h 22m2 stops
$156Frontier
Find Deal
Thu, Oct 16 - Tue, Oct 21
Frontier Logo
8:43 pm - 12:29 amPHL-SJU
3h 46mnonstop
Frontier Logo
1:59 am - 5:57 amSJU-PHL
3h 58mnonstop
$157Frontier
Find Deal
Tue, Oct 7 - Tue, Oct 14
Frontier Logo
8:43 pm - 12:29 amPHL-SJU
3h 46mnonstop
Frontier Logo
1:59 am - 5:57 amSJU-PHL
3h 58mnonstop
$158Frontier
Find Deal
Wed, Oct 8 - Mon, Oct 13
Frontier Logo
7:32 pm - 11:23 pmPHL-SJU
3h 51mnonstop
Frontier Logo
1:06 pm - 5:05 pmSJU-PHL
3h 59mnonstop
$160Frontier
Find Deal
Sat, Sep 27 - Sat, Oct 4
Frontier Logo
6:00 am - 10:47 amPHL-SJU
3h 47mnonstop
Frontier Logo
2:29 am - 5:34 amSJU-PHL
4h 05mnonstop
$161Frontier
Find Deal
Sat, Feb 7 - Sun, Feb 8
Multiple Airlines Logo
11:30 am - 12:54 amPHL-SJU
13h 24m1 stop
Multiple Airlines Logo
1:59 am - 5:57 amSJU-PHL
3h 58mnonstop
$166Multiple Airlines
Find Deal
Sat, Oct 18 - Mon, Oct 20
Multiple Airlines Logo
9:50 pm - 10:56 amPHL-SJU
13h 06m1 stop
Multiple Airlines Logo
1:59 am - 5:57 amSJU-PHL
3h 58mnonstop
$170Multiple Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7

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
Oct 16
PHL8:43 pmPhiladelphia
3h 46m
SJU12:29 amSan Juan Luis Munoz Marin Intl
Oct 23
SJU12:11 pmSan Juan Luis Munoz Marin Intl
3h 58m
PHL4:09 pmPhiladelphia
$153
Find similar
Frontier
Oct 4
PHL8:10 amPhiladelphia
3h 51m
SJU12:01 pmSan Juan Luis Munoz Marin Intl
Oct 8
SJU1:59 amSan Juan Luis Munoz Marin Intl
3h 58m
PHL5:57 amPhiladelphia
$154
Find similar
Frontier
Oct 7
PHL8:43 pmPhiladelphia
3h 46m
SJU12:29 amSan Juan Luis Munoz Marin Intl
Oct 10
SJU1:59 amSan Juan Luis Munoz Marin Intl
3h 58m
PHL5:57 amPhiladelphia
$155
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 September 17, 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

Thu 10/16

8:43 pm-12:29 am

Nonstop3h 46m

San Juan Luis Munoz Marin Intl

Thu 10/23

12:11 pm-4:09 pm

Nonstop3h 58m

$153

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 10/4

8:10 am-12:01 pm

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Wed 10/8

1:59 am-5:57 am

Nonstop3h 58m

$154

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 10/7

8:43 pm-12:29 am

Nonstop3h 46m

San Juan Luis Munoz Marin Intl

Fri 10/10

1:59 am-5:57 am

Nonstop3h 58m

$155

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 10/16

8:43 pm-12:29 am

Nonstop3h 46m

San Juan Luis Munoz Marin Intl

Tue 10/21

6:22 am-6:44 pm

2 stops12h 22m

$156

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 10/7

8:43 pm-12:29 am

Nonstop3h 46m

San Juan Luis Munoz Marin Intl

Tue 10/14

1:59 am-5:57 am

Nonstop3h 58m

$157

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Wed 10/8

8:43 pm-12:29 am

Nonstop3h 46m

San Juan Luis Munoz Marin Intl

Mon 10/13

1:59 am-5:57 am

Nonstop3h 58m

$158

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 9/27

7:32 pm-11:23 pm

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Sat 10/4

1:06 pm-5:05 pm

Nonstop3h 59m

$160

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 2/7

6:00 am-10:47 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Sun 2/8

2:29 am-5:34 am

Nonstop4h 05m

$161

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 10/18

11:30 am-12:54 am

1 stop13h 24m

San Juan Luis Munoz Marin Intl

Mon 10/20

1:59 am-5:57 am

Nonstop3h 58m

$166

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 10/4

9:50 pm-10:56 am

1 stop13h 06m

San Juan Luis Munoz Marin Intl

Tue 10/7

1:59 am-5:57 am

Nonstop3h 58m

$170

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

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 Monday. momondo users have found tickets for Monday departures for as low as $273. 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 $305.

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 $274. Flights at noon are often more expensive with an average ticket price of $363.

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 $274 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 $242 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 September 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

$137

Fastest flight time

3h 46m

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 $137. 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 $237.
The fastest flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport takes 3h 46m
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 46m, 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 $99Free CancellationRating
7.5
78 reviews
Search Avelo Airlines flights
Spirit AirlinesPriceFrom $129Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
FrontierPriceFrom $146Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
JetBluePriceFrom $209Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
SouthwestPriceFrom $213Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
DeltaPriceFrom $217Free CancellationRating
7.9
7,961 reviews
Search Delta flights
American AirlinesPriceFrom $243Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $420Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights

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

    Frontier flight deals from Philadelphia to San Juan Luis Munoz Marin Intl Airport start from $146 round-trip. Over the 12 Frontier flights for this route in a normal week, average airfare is usually $275 round-trip - but some users have found much cheaper deals with momondo.

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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