TTN - SJU

$89 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 1/8. 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, 0 bags

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
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Everything you should know

Cheapest round-trip
$180
Typical prices: $162-$310
Frontier
Thu 1/22Tue 1/27
TTN - SJU • 1 stop
Cheapest one-way
$89
Frontier
Thu 1/8
TTN - SJU • 1 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 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, Jan 22 - Tue, Jan 27
Frontier Logo
12:04 pm - 11:59 pmTTN-SJU
10h 55m1 stop
Frontier Logo
8:00 am - 2:26 pmSJU-TTN
7h 26m1 stop
$180Frontier
Find Deal
Sat, Feb 28 - Tue, Mar 3
Frontier Logo
7:13 pm - 9:55 amTTN-SJU
13h 42m1 stop
Frontier Logo
7:00 am - 10:02 pmSJU-TTN
16h 02m1 stop
$181Frontier
Find Deal
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
7:58 pm - 2:01 pmTTN-SJU
17h 03m1 stop
Frontier Logo
6:18 pm - 9:44 pmSJU-TTN
28h 26m1 stop
$185Frontier
Find Deal
Wed, Feb 4 - Tue, Feb 10
Frontier Logo
3:21 pm - 11:59 pmTTN-SJU
7h 38m1 stop
Frontier Logo
11:05 am - 10:02 pmSJU-TTN
11h 57m1 stop
$201Frontier
Find Deal
Sat, Feb 28 - Fri, Mar 6
Frontier Logo
7:13 pm - 9:55 amTTN-SJU
13h 42m1 stop
Frontier Logo
3:55 am - 9:14 pmSJU-TTN
18h 19m1 stop
$202Frontier
Find Deal
Tue, Dec 30 - Fri, Jan 9
Frontier Logo
6:10 am - 9:23 amTTN-SJU
26h 13m1 stop
Frontier Logo
3:55 am - 9:56 pmSJU-TTN
19h 01m1 stop
$213Frontier
Find Deal
Fri, Feb 6 - Wed, Feb 11
Frontier Logo
11:56 am - 11:59 pmTTN-SJU
11h 03m1 stop
Frontier Logo
11:05 am - 10:02 pmSJU-TTN
11h 57m1 stop
$215Frontier
Find Deal
Sun, Dec 7 - Sat, Dec 13
Frontier Logo
9:08 pm - 9:55 amTTN-SJU
11h 47m1 stop
Frontier Logo
11:05 am - 5:03 pmSJU-TTN
6h 58m1 stop
$217Frontier
Find Deal
Sun, Jan 25 - Thu, Jan 29
Frontier Logo
9:31 am - 1:08 amTTN-SJU
14h 37m1 stop
Frontier Logo
4:36 pm - 6:38 pmSJU-TTN
27h 02m1 stop
$220Frontier
Find Deal
Sun, Feb 8 - Thu, Feb 12
Frontier Logo
9:06 pm - 3:26 pmTTN-SJU
17h 20m1 stop
Frontier Logo
7:00 am - 11:35 pmSJU-TTN
17h 35m1 stop
$224Frontier
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.

How much is a round-trip flight from Trenton, New Jersey to San Juan Luis Munoz Marin Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Trenton, New Jersey to San Juan Luis Munoz Marin Intl Airport departing in January.

Good to know

Low seasonMarch
Cheapest flight$89
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly with an average 2% increase in price.
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 $89 for a one-way ticket and $180 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 3095 reviews
6.6Crew
4.6Food
5.5Comfort
4.4Entertainment
6.0Boarding
Airline reviews

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

2.0 MediocreDaniel, Nov 2025DEN - ATL
Read more Frontier reviews

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

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!!!

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

Information on your arrival and departure airports