TTN - SJU

$85 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 9/13. 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
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Flights 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

Sat, Oct 4 - Sat, Oct 11
Frontier Logo
11:32 am - 11:54 pmTTN-SJU
12h 22m1 stop
Frontier Logo
12:02 pm - 11:47 pmSJU-TTN
11h 45m1 stop
$177Frontier
Find Deal
Mon, Aug 25 - Fri, Sep 5
Frontier Logo
6:00 am - 7:08 pmTTN-SJU
13h 08m1 stop
Frontier Logo
4:42 pm - 10:47 amSJU-TTN
18h 05m1 stop
$180Frontier
Find Deal
Thu, Sep 25 - Sun, Sep 28
Frontier Logo
5:05 pm - 11:54 pmTTN-SJU
6h 49m1 stop
Frontier Logo
3:40 am - 10:32 amSJU-TTN
6h 52m1 stop
$181Frontier
Find Deal
Mon, Aug 18 - Sat, Aug 23
Frontier Logo
5:15 pm - 12:32 amTTN-SJU
7h 17m1 stop
Frontier Logo
8:13 pm - 9:50 amSJU-TTN
13h 37m1 stop
$183Frontier
Find Deal
Thu, Sep 4 - Sat, Sep 6
Frontier Logo
5:05 pm - 11:54 pmTTN-SJU
6h 49m1 stop
Frontier Logo
3:40 am - 10:32 amSJU-TTN
6h 52m1 stop
$184Frontier
Find Deal
Thu, Oct 2 - Sun, Oct 5
Frontier Logo
5:05 pm - 11:54 pmTTN-SJU
6h 49m1 stop
Frontier Logo
3:40 am - 10:32 amSJU-TTN
6h 52m1 stop
$186Frontier
Find Deal
Mon, Sep 1 - Thu, Sep 4
Frontier Logo
6:00 am - 7:08 pmTTN-SJU
13h 08m1 stop
Frontier Logo
9:07 am - 10:32 amSJU-TTN
25h 25m1 stop
$200Frontier
Find Deal
Mon, Sep 1 - Fri, Sep 5
Frontier Logo
6:00 am - 7:08 pmTTN-SJU
13h 08m1 stop
Frontier Logo
9:07 am - 10:47 amSJU-TTN
25h 40m1 stop
$201Frontier
Find Deal
Thu, Sep 25 - Sat, Sep 27
Frontier Logo
5:05 pm - 11:54 pmTTN-SJU
6h 49m1 stop
Frontier Logo
3:40 am - 10:32 amSJU-TTN
6h 52m1 stop
$202Frontier
Find Deal
Tue, Jul 1 - Wed, Jul 9
Frontier Logo
5:17 pm - 2:35 amTTN-SJU
9h 18m1 stop
Frontier Logo
3:29 am - 11:06 amSJU-TTN
7h 37m1 stop
$204Frontier
Find Deal
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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.

What is the cheapest month to fly from Trenton to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Trenton to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Trenton to San Juan Luis Munoz Marin Intl Airport is March, where tickets cost $130 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $800 and $378 respectively.

Good to know

Low seasonSeptember
High seasonMay
Cheapest flight$85
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 25% 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 $85 for a one-way ticket and $177 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.

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.
5.9
FrontierOverall score based on 3295 reviews
4.5Entertainment
4.8Food
6.2Boarding
5.6Comfort
6.8Crew
Airline reviews

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

2.0 MediocreAnonymous, Jun 2025SMF - LAS
Read more Frontier reviews

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

You get what you pay for nothing essentially but a hard uncomfortable seat that doesn’t recline and kids screaming all around you and chaotic boarding and limited check bag weight allowance when compared to other airlines

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Although an hour and a half early was told by staff at check in they had overbooked and could not check us in for the flight.

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

I liked the price of the flight and the chance to buy a seat with no person seated in the middle seat.. Also the flight was right on time.

Plane was down graded and I lost my uncharged exit row with more leg room. No mention or offer of refund from podium. Flight attendant was nice to explain this happens often and that I could request a refund via online form submission. I did this and have heard nothing back.

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

Information on your arrival and departure airports

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