TTN - SJU

$147 Find Cheap Flights from Trenton to San Juan

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Trenton to San Juan departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Trenton 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 Trenton to San Juan, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$289
Frontier
Thu 12/4Fri 12/5
TTN - SJU • 1 stop
Cheapest one-way
$147
Frontier
Thu 10/30
TTN - SJU • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Juan!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Trenton to San Juan (TTN-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Trenton to San Juan 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 Trenton to San Juan

Thu, Dec 4 - Fri, Dec 5
Frontier Logo
12:45 pm - 2:50 amTTN-SJU
13h 05m1 stop
Frontier Logo
11:05 am - 6:37 pmSJU-TTN
8h 32m1 stop
$289Frontier
Find Deal
Thu, Feb 26 - Sat, Feb 28
Frontier Logo
6:10 am - 8:32 pmTTN-SJU
13h 22m1 stop
Frontier Logo
3:55 am - 9:04 pmSJU-TTN
18h 09m1 stop
$294Frontier
Find Deal
Sun, Nov 9 - Thu, Nov 13
Frontier Logo
9:29 pm - 1:27 pmTTN-SJU
14h 58m1 stop
Frontier Logo
10:39 pm - 11:59 pmSJU-TTN
26h 20m1 stop
$296Frontier
Find Deal
Fri, Nov 7 - Mon, Nov 10
Frontier Logo
6:00 am - 2:54 amTTN-SJU
19h 54m1 stop
Frontier Logo
12:04 pm - 11:59 pmSJU-TTN
12h 55m1 stop
$297Frontier
Find Deal
Fri, Oct 31 - Sun, Nov 2
Frontier Logo
6:00 am - 9:24 pmTTN-SJU
15h 24m1 stop
Frontier Logo
3:59 am - 5:35 pmSJU-TTN
14h 36m1 stop
$304Frontier
Find Deal
Sat, Nov 15 - Sun, Dec 14
Frontier Logo
8:00 am - 11:19 amTTN-SJU
26h 19m1 stop
Frontier Logo
9:32 pm - 11:50 amSJU-TTN
15h 18m1 stop
$313Frontier
Find Deal
Fri, Feb 6 - Sat, Feb 7
Frontier Logo
7:00 am - 9:55 amTTN-SJU
25h 55m1 stop
Frontier Logo
3:55 am - 11:59 pmSJU-TTN
21h 04m1 stop
$320Frontier
Find Deal
Sun, Mar 1 - Sat, Mar 7
Frontier Logo
9:59 pm - 2:50 amTTN-SJU
27h 51m1 stop
Frontier Logo
3:55 am - 11:59 pmSJU-TTN
20h 04m1 stop
$334Frontier
Find Deal
Sun, Nov 9 - Sun, Nov 16
Frontier Logo
6:00 am - 11:04 amTTN-SJU
28h 04m1 stop
Frontier Logo
7:30 am - 10:13 amSJU-TTN
27h 43m1 stop
$336Frontier
Find Deal
Sat, Nov 8 - Wed, Nov 12
Frontier Logo
8:00 am - 2:54 amTTN-SJU
17h 54m1 stop
Frontier Logo
12:29 pm - 3:32 pmSJU-TTN
28h 03m1 stop
$337Frontier
Find Deal
Booking Insights

KAYAK's insights & trends for Trenton to San Juan flights

Get data-powered insights and trends into flights from Trenton to San Juan to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Trenton and San Juan Luis Munoz Marin Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Trenton to San Juan Luis Munoz Marin Intl Airport.

There is just one airline that flies from Trenton to San Juan Luis Munoz Marin Intl Airport direct and that is Frontier. The best round-trip deal found from Frontier for the route is $119.

Good to know

Low seasonMarch
Cheapest flight$147
Best time to beat the crowds with an average 57% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Trenton to San Juan

When to book flights from Trenton to San Juan

Are your dates flexible? Find out the best times to travel from Trenton to San Juan 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 Trenton to San Juan flights

  • What is the cheapest flight from Trenton to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Trenton to San Juan Luis Munoz Marin Intl Airport was $147 for a one-way ticket and $289 for a round-trip.

  • Do I need a passport to fly between Trenton and San Juan?

    A passport is required to fly from Trenton to San Juan.

  • Which airports will I be using when flying from Trenton to San Juan?

    Trenton and San Juan are both served by 1 main airport. You will leave Trenton from Trenton-Mercer and will be arriving at San Juan Luis Munoz Marin Intl.

  • Which aircraft models fly most regularly from Trenton to San Juan?

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

  • How does KAYAK find such low prices on flights from Trenton to San Juan?

    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 Trenton to San Juan.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Trenton 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 Trenton to San Juan?

    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 with an airline and back to Trenton with another airline. Booking your flights between Trenton and SJU 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 Trenton to San Juan?

    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 from Trenton 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 Trenton to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Trenton 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 Trenton to San Juan? 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 3137 reviews
6.1Boarding
4.4Entertainment
4.6Food
6.7Crew
5.5Comfort
Airline reviews

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.

10.0 ExcellentAnonymous, Oct 2025CLE - FLL
Read more Frontier reviews

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.

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

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.

Everything you need to know for your flight from Trenton to San Juan

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.