PHL - SIG

Find cheap flights from Philadelphia to San Juan Isla Grande

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Isla Grande Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to San Juan, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to San Juan, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Philadelphia to Isla Grande (PHL-SIG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Isla Grande that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Isla Grande

Multiple Airlines Logo
PHL-SIG
1576 mimulti-stop
Multiple Airlines Logo
SIG-PHL
1576 mimulti-stop
Multiple Airlines
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Everything you should know

Cheapest round-trip
Multiple Airlines
Tue 9/16
PHL - SIG • multi-stop
Cheapest one-way
Multiple Airlines
Tue 9/16
PHL - SIG • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Isla Grande!
Booking Insights

KAYAK's insights & trends for Philadelphia to Isla Grande flights

Get data-powered insights and trends into flights from Philadelphia to Isla Grande to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Philadelphia to San Juan Isla Grande?

The average price of all round-trip flights from Philadelphia to San Juan Isla Grande Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to San Juan Isla Grande on a Tuesday and more expensive on a Friday. On your return trip to Philadelphia, you should consider flying back on a Thursday, and avoid Fridays for better deals.

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Good to know

Low seasonApril
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly with an average 33% increase in price.

When to book flights from Philadelphia to Isla Grande

Are your dates flexible? Find out the best times to travel from Philadelphia to Isla Grande based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Philadelphia to San Juan Isla Grande flights

  • Do I need a passport to fly between Philadelphia and San Juan Isla Grande?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Philadelphia and on arrival in San Juan Isla Grande.

  • Which aircraft models fly most regularly from Philadelphia to San Juan Isla Grande?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Philadelphia to San Juan Isla Grande?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to San Juan Isla Grande.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to San Juan Isla Grande?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan Isla Grande from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to San Juan Isla Grande?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan Isla Grande with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and SIG can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to San Juan Isla Grande?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan Isla Grande from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Philadelphia to Isla Grande

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Isla Grande? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
5.8
FrontierOverall score based on 3172 reviews
6.1Boarding
6.7Crew
4.7Food
5.5Comfort
4.4Entertainment
Airline reviews

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

4.0 OkayAnonymous, Aug 2025SEA - DEN
Read more Frontier reviews

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

Everything you need to know for your flight from Philadelphia to Isla Grande

Information on your arrival and departure airports

Philadelphia (PHL)
Isla Grande (SIG)

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