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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

Our best Frontier deals on Philadelphia to San Juan 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 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 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

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?

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 $273. The most expensive day to fly to San Juan is Thursday, with ticket prices averaging around $305.

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 $274. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $363 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 $274 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 $242 on momondo.

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

There are 3 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 46m

Direct flights

Every day

Airports in San Juan

1 airport
The fastest flight from Philadelphia to San Juan takes 3h 46m
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 46m.

  • 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 $99Free CancellationRating
7.5
78 reviews
Search Avelo Airlines flights
Spirit AirlinesPriceFrom $129Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
FrontierPriceFrom $138Free 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

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