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Cheap flights from Philadelphia to San Juan from $78

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 1/5. 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
1:15 pm - 6:02 pm
PHL
-
SJU
3h 47mnonstop
Frontier Logo
5:45 am - 1:14 am
SJU
-
PHL
20h 29m1 stop
$170Frontier
Fri, Jan 9 - Mon, Jan 12
Frontier Logo
8:02 pm - 11:49 pm
PHL
-
SJU
3h 47mnonstop
Frontier Logo
6:00 am - 2:47 pm
SJU
-
PHL
8h 47m1 stop
$171Frontier
Tue, Mar 31 - Thu, Apr 9
Frontier Logo
7:19 pm - 11:37 pm
PHL
-
SJU
27h 18m1 stop
Frontier Logo
2:29 am - 5:34 am
SJU
-
PHL
4h 05mnonstop
$172Frontier
Wed, Feb 11 - Mon, Feb 16
Multiple Airlines Logo
6:00 am - 2:32 pm
PHL
-
SJU
7h 32m1 stop
Multiple Airlines Logo
12:59 am - 5:00 am
SJU
-
PHL
4h 01mnonstop
$173Multiple Airlines
Sat, Mar 7 - Mon, Mar 16
Multiple Airlines Logo
7:42 pm - 12:29 am
PHL
-
SJU
3h 47mnonstop
Multiple Airlines Logo
2:59 am - 6:11 am
SJU
-
PHL
4h 12mnonstop
$174Multiple Airlines
Sat, Jan 3 - Sat, Jan 10
Multiple Airlines Logo
8:56 pm - 1:41 am
PHL
-
SJU
3h 45mnonstop
Multiple Airlines Logo
12:55 pm - 4:07 pm
SJU
-
PHL
4h 12mnonstop
$175Multiple Airlines
Thu, Jan 15 - Fri, Jan 23
Multiple Airlines Logo
12:32 pm - 12:32 pm
PHL
-
SJU
23h 00m1 stop
Multiple Airlines Logo
2:59 am - 6:11 am
SJU
-
PHL
4h 12mnonstop
$176Multiple Airlines
Sat, Jan 17 - Sat, Jan 24
Frontier Logo
8:20 pm - 12:59 am
PHL
-
SJU
3h 39mnonstop
Frontier Logo
12:55 pm - 4:07 pm
SJU
-
PHL
4h 12mnonstop
$177Frontier
Fri, Jan 16 - Fri, Jan 23
Multiple Airlines Logo
8:25 pm - 3:26 pm
PHL
-
SJU
18h 01m1 stop
Multiple Airlines Logo
2:59 am - 6:11 am
SJU
-
PHL
4h 12mnonstop
$178Multiple Airlines
Wed, Jan 28 - Sun, Feb 1
Spirit Airlines Logo
8:20 am - 3:35 pm
PHL
-
SJU
6h 15m1 stop
Spirit Airlines Logo
4:40 pm - 11:50 pm
SJU
-
PHL
8h 10m1 stop
$179Spirit Airlines
Fri, Jan 30 - Tue, Feb 3

Frontier flights from Philadelphia to San Juan

Our best Frontier deals on Philadelphia to San Juan flight tickets
Frontier
Dec 13
PHL5:05 amPhiladelphia
9h 29m
1 stop
SJU3:34 pmSan Juan Luis Munoz Marin Intl
Dec 15
SJU1:59 amSan Juan Luis Munoz Marin Intl
4h 05m
PHL5:04 amPhiladelphia
$168
Find similar
Frontier
Dec 11
PHL5:05 amPhiladelphia
8h 24m
1 stop
SJU2:29 pmSan Juan Luis Munoz Marin Intl
Dec 15
SJU1:59 amSan Juan Luis Munoz Marin Intl
4h 05m
PHL5:04 amPhiladelphia
$169
Find similar
Frontier
Jan 9
PHL1:15 pmPhiladelphia
3h 47m
SJU6:02 pmSan Juan Luis Munoz Marin Intl
Jan 12
SJU5:45 amSan Juan Luis Munoz Marin Intl
20h 29m
1 stop
PHL1:14 amPhiladelphia
$170
Find similar

Spirit Airlines flights from Philadelphia to San Juan

Our best Spirit Airlines deals on Philadelphia to San Juan flight tickets
Spirit Airlines
Dec 7
PHL1:24 pmPhiladelphia
3h 40m
SJU6:04 pmSan Juan Luis Munoz Marin Intl
Dec 17
SJU7:07 pmSan Juan Luis Munoz Marin Intl
29h 27m
1 stop
PHL11:34 pmPhiladelphia
$179
Find similar
Spirit Airlines
Jan 16
PHL8:56 pmPhiladelphia
3h 45m
SJU1:41 amSan Juan Luis Munoz Marin Intl
Jan 19
SJU2:59 amSan Juan Luis Munoz Marin Intl
4h 12m
PHL6:11 amPhiladelphia
$185
Find similar
Spirit Airlines
Dec 11
PHL10:22 amPhiladelphia
8h 28m
1 stop
SJU7:50 pmSan Juan Luis Munoz Marin Intl
Dec 20
SJU12:53 pmSan Juan Luis Munoz Marin Intl
11h 41m
1 stop
PHL11:34 pmPhiladelphia
$194
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to San Juan 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 December 4, 2025.
Use the filters below to find and compare flights from Philadelphia to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Fri 1/9

1:15 pm-6:02 pm

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Mon 1/12

5:45 am-1:14 am

1 stop20h 29m

$170

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 3/31

8:02 pm-11:49 pm

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Thu 4/9

6:00 am-2:47 pm

1 stop8h 47m

$171

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Wed 2/11

7:19 pm-11:37 pm

1 stop27h 18m

San Juan Luis Munoz Marin Intl

Mon 2/16

2:29 am-5:34 am

Nonstop4h 05m

$172

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 3/7

6:00 am-2:32 pm

1 stop7h 32m

San Juan Luis Munoz Marin Intl

Mon 3/16

12:59 am-5:00 am

Nonstop4h 01m

$173

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 1/3

7:42 pm-12:29 am

Nonstop3h 47m

San Juan Luis Munoz Marin Intl

Sat 1/10

2:59 am-6:11 am

Nonstop4h 12m

$174

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 1/15

8:56 pm-1:41 am

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Fri 1/23

12:55 pm-4:07 pm

Nonstop4h 12m

$175

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 1/17

12:32 pm-12:32 pm

1 stop23h 00m

San Juan Luis Munoz Marin Intl

Sat 1/24

2:59 am-6:11 am

Nonstop4h 12m

$176

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Fri 1/16

8:20 pm-12:59 am

Nonstop3h 39m

San Juan Luis Munoz Marin Intl

Fri 1/23

12:55 pm-4:07 pm

Nonstop4h 12m

$177

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Wed 1/28

8:25 pm-3:26 pm

1 stop18h 01m

San Juan Luis Munoz Marin Intl

Sun 2/1

2:59 am-6:11 am

Nonstop4h 12m

$178

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Fri 1/30

8:20 am-3:35 pm

1 stop6h 15m

San Juan Luis Munoz Marin Intl

Tue 2/3

4:40 pm-11:50 pm

1 stop8h 10m

$179

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

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 typical price of a round-trip flight between Philadelphia and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in October, then May is your next best option. Flight prices from Philadelphia to San Juan during May average around $248.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Philadelphia to San Juan is on a Monday when prices can be found for as low as $283. The most expensive day to fly to San Juan is Thursday, with ticket prices averaging around $311.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the evening when flights can be purchased for as low as $283. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $385 on average. Flights to San Juan from Philadelphia at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Philadelphia to San Juan flight route?

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

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $281 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Philadelphia for as low as $246 on momondo.

What cabin class options are available on Philadelphia to San Juan flights?

There are 4 cabin classes available to choose from on Philadelphia to San Juan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Philadelphia to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to San Juan

Fastest flight time

3h 34m

Direct flights

Every day

Airports in San Juan

1 airport
The fastest flight from Philadelphia to San Juan takes 3h 34m
Direct flights go from Philadelphia to San Juan every day.
There is 1 airport near San Juan: San Juan Luis Munoz Marin Intl (SJU)
Search flight deals

  • How far is Philadelphia to San Juan by plane?

    A flight from Philadelphia to San Juan will travel around 1578.5 mi. A reasonable flight in good conditions will take 3h 39m.

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

    Prices for flights from Philadelphia Airport to San Juan refresh daily.

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

  • How old do you have to be to fly from Philadelphia Airport to San Juan?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The travel and health documents you'll need for your trip to San Juan may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Philadelphia to San Juan

Compare and see reviews for airlines that fly from Philadelphia to San Juan with momondo
Airline
Rating
Free Cancellation
Price
Avelo AirlinesPriceFrom $100Free CancellationRating
7.6
83 reviews
Search Avelo Airlines flights
Spirit AirlinesPriceFrom $130Free CancellationRating
6.3
8,161 reviews
Search Spirit Airlines flights
FrontierPriceFrom $149Free CancellationRating
5.8
3,092 reviews
Search Frontier flights
SouthwestPriceFrom $213Free CancellationRating
8.0
4,252 reviews
Search Southwest flights
JetBluePriceFrom $213Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
DeltaPriceFrom $215Free CancellationRating
7.9
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $243Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
United AirlinesPriceFrom $420Free CancellationRating
7.4
9,063 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Philadelphia to San Juan flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Juan that suits you.

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

Yes. momondo enables you to select and highlight flights to San Juan from Philadelphia with this policy.

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?

Price alerts on flights to San Juan from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Juan trip

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport