EWR - SIG

Find cheap flights from Newark Liberty Airport 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 Newark 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 Newark to San Juan, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Newark to Isla Grande (EWR-SIG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Newark 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 Newark to Isla Grande

Multiple Airlines Logo
EWR-SIG
1609 mimulti-stop
Multiple Airlines Logo
SIG-EWR
1609 mimulti-stop
Multiple Airlines
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Everything you should know

Cheapest round-trip
Multiple Airlines
Thu 10/16
EWR - SIG • multi-stop
Cheapest one-way
Multiple Airlines
Thu 10/16
EWR - 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 Newark to Isla Grande flights

Get data-powered insights and trends into flights from Newark 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 Newark Liberty Airport to San Juan Isla Grande?

The average price of all round-trip flights from Newark Airport 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 Wednesday and more expensive on a Friday. On your return trip to Newark Liberty Airport, you should consider flying back on a Friday, and avoid Wednesdays for better deals.

Good to know

Low seasonFebruary
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 4% increase in price.

When to book flights from Newark to Isla Grande

Are your dates flexible? Find out the best times to travel from Newark 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 Newark Liberty Airport to San Juan Isla Grande flights

  • Do I need a passport to fly between Newark Liberty Airport and San Juan Isla Grande?

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

  • Which aircraft models fly most regularly from Newark Liberty Airport to San Juan Isla Grande?

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

  • Which is the best airline for flights from Newark to San Juan, JetBlue or Frontier?

    The two airlines most popular with KAYAK users for flights from Newark to San Juan are JetBlue and Frontier. With an average price for the route of $391 and an overall rating of 7.2, JetBlue is the most popular choice. Frontier is also a great choice for the route, with an average price of $303 and an overall rating of 5.8.

  • How does KAYAK find such low prices on flights from Newark Liberty Airport 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 Newark Liberty Airport 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 Newark Liberty Airport 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 Newark Liberty Airport 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 Newark Liberty Airport 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 Newark Liberty Airport with another airline. Booking your flights between Newark Liberty Airport 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 Newark Liberty Airport 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 Newark Liberty Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Newark to Isla Grande

 
See real verified KAYAK customer reviews for airlines flying from Newark 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 Newark 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.
7.2
JetBlueOverall score based on 2908 reviews
7.4Boarding
7.6Comfort
8.0Crew
7.3Entertainment
6.7Food
Airline reviews

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

10.0 ExcellentEmily, Sep 2025JFK - RSW
Read more JetBlue reviews

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

Worst flight experience ever flights canceled. JetBlue told us just did not even bother standing in line to come back in one and a half hours then without any information we had to go pick up all of our luggage and spend over $2000 in accommodation just to get home. JetBlue said that the next flight available for us to get home would be three days later. Absolutely absurd hasn’t offered to give us any compensation do not fly JetBlue horrible company. They said it was based on the weather and the weather is great in all locations that we would’ve been flying to total hoax. I think it’s a conspiracy theory.

flight was delayed for hours with no explanation. The plane was a very old aircraft.

The flight departed more than 1 hour late. Leg room is bigger than most airlines

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

No music app working: no economy meal on five hour flight; hour on tarmac at the end waiting for a gate. Flight itself was smooth and easy.

Communication with the customer and stay is important. Staff off with a minor inconvenience but it worked out of course. Also this was a very old Mint Class plane. They snuck this one in on us. The updated aircraft are much better.

The flight itself was fine, but the boarding process was extremely frustrating. There is no one scanning boarding passes - passengers just scan themselves and enter the jetway. By the time my husband and I got on the plane and were halfway to our seats they determined there were too many bags on the plane and everything at that point needed to be checked. This created a lot of unnecessary chaos. They should have alerted people before getting on the plane that they would need to start checking bags instead of waiting until people were already on the plane.

In flight on demand didn't work at our seats. Only a single beverage/snack run.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

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

Information on your arrival and departure airports

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