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$125+ Cheap flights from Trenton, NJ (TTN) to Puerto Rico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — SJU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Trenton to Puerto Rico

Keep the following information in mind while searching for Trenton to Puerto Rico flight deals. Data was last updated September 16, 2025.

Round-trip from

$247
(Frontier)

One-way from

$125
(Cheapflightsfares)

Popular in

December

Cheapest in

March

Average price

$246
From Trenton-Mercer to Puerto Rico
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One-way flight from Trenton-Mercer to Puerto Rico
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Highest demand for flights based on searches. 6% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Trenton to Puerto Rico

Cheapest flights from Trenton to Puerto Rico
Explore the most affordable flight options available from Trenton to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2611:45 amTTN - SJU
1 stop12h 14mFrontier
Fri 9/263:39 amSJU - TTN
1 stop7h 21mFrontier
Deal found 9/15$247
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/184:57 pmTTN - SJU
1 stop7h 02mFrontier
Wed 9/243:39 amSJU - TTN
1 stop7h 21mFrontier
Deal found 9/15$249
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1911:45 amTTN - SJU
1 stop12h 14mFrontier
Thu 10/23:39 amSJU - TTN
1 stop7h 21mFrontier
Deal found 9/14$252
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:00 amTTN - SJU
1 stop20h 30mFrontier
Thu 10/164:16 pmSJU - TTN
1 stop17h 08mFrontier
Deal found 9/14$254
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:00 amTTN - SJU
1 stop20h 30mFrontier
Thu 10/307:30 amSJU - TTN
1 stop26h 43mFrontier
Deal found 9/15$255
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/164:25 pmTTN - SJU
1 stop10h 05mFrontier
Sat 10/186:22 amSJU - TTN
2 stops17h 37mFrontier
Deal found 9/15$259
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amTTN - SJU
1 stop20h 30mFrontier
Sun 10/193:40 amSJU - TTN
1 stop20h 19mFrontier
Deal found 9/14$268
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3111:08 amTTN - SJU
1 stop27h 34mFrontier
Wed 11/512:29 pmSJU - TTN
1 stop28h 03mFrontier
Deal found 9/14$270
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2911:45 amTTN - SJU
1 stop12h 14mFrontier
Sat 10/43:39 amSJU - TTN
1 stop7h 21mFrontier
Deal found 9/14$271
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:25 pmTTN - SJU
1 stop10h 05mFrontier
Fri 10/246:22 amSJU - TTN
2 stops17h 37mFrontier
Deal found 9/15$282
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:32 pmTTN - SJU
1 stop13h 23mFrontier
Thu 12/1111:05 amSJU - TTN
1 stop8h 32mFrontier
Deal found 9/14$284

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton to Puerto Rico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Trenton to Puerto Rico that are best for you.

Fly from

Trenton

Fly to

Puerto Rico

Route

Depart

Return

Price

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Fri 9/26

11:45 am-11:59 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Sat 9/27

3:39 am-11:00 am

1 stop7h 21m

$252

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Fri 9/26

11:45 am-11:59 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Sat 10/18

3:40 am-10:14 am

1 stop6h 34m

$252

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Fri 10/10

6:00 am-2:30 am

1 stop20h 30m

San Juan Luis Munoz Marin Intl

Fri 10/24

2:07 pm-11:59 pm

1 stop9h 52m

$252

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Sun 9/28

4:57 pm-2:34 am

1 stop9h 37m

San Juan Luis Munoz Marin Intl

Wed 10/1

3:39 am-11:00 am

1 stop7h 21m

$252

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Thu 10/23

4:25 pm-2:30 am

1 stop10h 05m

San Juan Luis Munoz Marin Intl

Fri 10/31

10:39 pm-11:59 pm

1 stop25h 20m

$252

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Thu 10/23

6:00 am-2:30 am

1 stop20h 30m

San Juan Luis Munoz Marin Intl

Thu 10/30

7:30 am-10:13 am

1 stop26h 43m

$255

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Sat 10/4

11:45 am-11:59 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Sat 10/11

2:17 pm-11:59 pm

1 stop9h 42m

$268

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Thu 10/30

4:27 pm-9:24 pm

1 stop28h 57m

San Juan Luis Munoz Marin Intl

Tue 1/6

9:37 pm-11:59 pm

1 stop27h 22m

$268

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Fri 10/3

1:15 pm-3:22 pm

1 stop26h 07m

San Juan Luis Munoz Marin Intl

Sun 10/5

3:39 am-11:00 am

1 stop7h 21m

$268

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Fri 10/31

11:08 am-2:42 pm

1 stop27h 34m

San Juan Luis Munoz Marin Intl

Wed 11/5

12:29 pm-3:32 pm

1 stop28h 03m

$270

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 18 results
1
2

Best time to book a flight from Trenton to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Trenton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Trenton to Puerto Rico

What is the cheapest month to book a flight from Trenton, New Jersey to Puerto Rico?

Currently, September is the cheapest month in which you can book a flight from Trenton, New Jersey to Puerto Rico (average of $254). Flying from Trenton, New Jersey to Puerto Rico in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TTN to PR?

Find hourly flight availability from Trenton to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Trenton, New Jersey to Puerto Rico as you normally would.

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Puerto Rico. Reviews last updated September 16, 2025.
See what other customers who have flown with Frontier from Trenton to Puerto Rico have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Frontier
5.8
Fair
3,174 reviews

Boarding

6.1

Comfort

5.5

Crew

6.7

Overall

5.8

Food

4.7

Entertainment

4.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

MCO - DFW

Frontier likes to promote themselves as being a cheap airline to fly, but in the end, that’s laughable. Only AFTER I booked through you, and then had to go to their site to choose my seats and baggage, did I find they charged a $75 “Passenger” fee. No explanation on what that was even for. Then for them to charge $5 for sodas, and who knows what for any small snack, is just insulting.
Frontier
5.8
Fair
3,174 reviews
Frontier
5.8
Fair
3,174 reviews

Boarding

6.1

Comfort

5.5

Crew

6.7

Overall

5.8

Food

4.7

Entertainment

4.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

MCO - DFW

Frontier likes to promote themselves as being a cheap airline to fly, but in the end, that’s laughable. Only AFTER I booked through you, and then had to go to their site to choose my seats and baggage, did I find they charged a $75 “Passenger” fee. No explanation on what that was even for. Then for them to charge $5 for sodas, and who knows what for any small snack, is just insulting.

Related info for your journey

Find useful and relevant information for your journey from Trenton to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Trenton to Puerto Rico?

    Most people fly from Trenton-Mercer (TTN) if they book a flight from Trenton to Puerto Rico. Trenton-Mercer is conveniently located just 4.8 mi from Trenton’s city center.

  • How long is the flight from Trenton, New Jersey to Puerto Rico?

    There are many flights that can get you from Trenton, New Jersey to Puerto Rico in 12h 14m. Fly via Frontier to get the fastest option. Trenton, New Jersey and Puerto Rico are separated by a distance of 1596 mi.

  • Can I find deals for flights from Trenton to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Trenton to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Trenton to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trenton to Puerto Rico.

  • Can I find deals for business class flights from Trenton to Puerto Rico?

    Yes. Cheapflights offers flight deals from Trenton to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Trenton, New Jersey to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Trenton, New Jersey to Puerto Rico (average of $254). Flying from Trenton, New Jersey to Puerto Rico in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Trenton to Puerto Rico

Discover the top airline that operate flights from Trenton to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$117Average$268FlexibilityNo cancel feeOn-time62%

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