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San Juan

$90+ Cheap flights from Trenton, NJ (TTN) to San Juan

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — SJU
fev 21 — fev 281
sáb 2/21
sáb 2/28
1 adult, Economy
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Cheap flight deals from Trenton to San Juan

Cheapest flights from Trenton to San Juan
Explore the most affordable flight options available from Trenton to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janeiro 22, 2026.

This CheapOair deal was found by Cheapflights users on 1/19. 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.
qua 2/258:00 am
TTN
-
SJU
1 stop15h 43m
Frontier
qua 3/45:25 pm
SJU
-
TTN
1 stop17h 21m
Frontier
Deal found 1/19$175
This CheapOair deal was found by Cheapflights users on 1/20. 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.
ter 2/248:00 am
TTN
-
SJU
1 stop24h 54m
Frontier
sex 2/273:53 am
SJU
-
TTN
1 stop28h 54m
Frontier
Deal found 1/20$178
This CheapOair deal was found by Cheapflights users on 1/19. 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.
ter 2/248:00 am
TTN
-
SJU
1 stop17h 53m
Frontier
qui 2/267:09 pm
SJU
-
TTN
1 stop29h 50m
Frontier
Deal found 1/19$179
This Super.com deal was found by Cheapflights users on 1/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 2/78:19 pm
TTN
-
SJU
1 stop16h 03m
Frontier
sáb 2/141:52 pm
SJU
-
TTN
1 stop10h 47m
Frontier
Deal found 1/19$182
This CheapOair deal was found by Cheapflights users on 1/19. 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.
seg 2/28:27 pm
TTN
-
SJU
1 stop17h 59m
Frontier
qua 2/44:36 pm
SJU
-
TTN
1 stop19h 33m
Frontier
Deal found 1/19$183
This Trip.com deal was found by Cheapflights users on 1/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 2/2112:45 pm
TTN
-
SJU
1 stop13h 08m
Frontier
qui 2/267:09 pm
SJU
-
TTN
1 stop29h 50m
Frontier
Deal found 1/20$195
This CheapOair deal was found by Cheapflights users on 1/20. 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.
ter 3/38:00 am
TTN
-
SJU
1 stop17h 53m
Frontier
seg 3/93:08 am
SJU
-
TTN
1 stop20h 51m
Frontier
Deal found 1/20$197
This CheapOair deal was found by Cheapflights users on 1/21. 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.
ter 2/248:00 am
TTN
-
SJU
1 stop17h 53m
Frontier
dom 3/13:53 am
SJU
-
TTN
1 stop8h 16m
Frontier
Deal found 1/21$199
This Booking.com deal was found by Cheapflights users on 1/21. 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.
qua 2/43:21 pm
TTN
-
SJU
1 stop21h 01m
Frontier
qua 2/1811:07 am
SJU
-
TTN
1 stop23h 39m
Frontier
Deal found 1/21$201
This CheapOair deal was found by Cheapflights users on 1/20. 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.
sáb 1/3112:04 pm
TTN
-
SJU
1 stop10h 55m
Frontier
ter 2/34:36 pm
SJU
-
TTN
1 stop22h 50m
Frontier
Deal found 1/20$203
This CheapOair deal was found by Cheapflights users on 1/19. 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.
qui 1/298:38 pm
TTN
-
SJU
1 stop26h 21m
Frontier
ter 2/34:36 pm
SJU
-
TTN
1 stop22h 50m
Frontier
Deal found 1/19$204

Find flight deals from Trenton to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Trenton (TTN) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated janeiro 22, 2026.

Round-trip from

$175
(CheapOair)

One-way from

$90
(Super.com)

Popular in

September

Cheapest in

January

Average price

$71
From Trenton-Mercer to San Juan
Search Deals
One-way flight from Trenton-Mercer to San Juan
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trenton to San Juan 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 janeiro 22, 2026.
Use the filters below to find and compare flights from Trenton to San Juan that are best for you.

Fly from

Trenton

Fly to

San Juan

Route

Depart

Return

Price

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

ter 2/24

8:00 am-9:54 am

1 stop24h 54m

San Juan Luis Munoz Marin Intl

seg 3/2

3:53 am-11:39 pm

1 stop20h 46m

$178

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

sáb 2/21

12:45 pm-2:53 am

1 stop13h 08m

San Juan Luis Munoz Marin Intl

qua 2/25

11:07 am-9:46 am

1 stop23h 39m

$178

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

qua 2/18

8:00 am-12:43 am

1 stop15h 43m

San Juan Luis Munoz Marin Intl

qua 2/25

5:25 pm-9:46 am

1 stop17h 21m

$182

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

ter 2/3

3:21 pm-11:59 pm

1 stop7h 38m

San Juan Luis Munoz Marin Intl

qua 2/18

11:07 am-11:39 pm

1 stop13h 32m

$182

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

qui 2/26

6:00 am-12:43 am

1 stop17h 43m

San Juan Luis Munoz Marin Intl

ter 3/3

5:25 pm-11:39 pm

1 stop7h 14m

$182

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

qua 2/25

8:00 am-12:43 am

1 stop15h 43m

San Juan Luis Munoz Marin Intl

dom 3/1

3:53 am-11:09 am

1 stop8h 16m

$182

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

ter 4/7

12:26 pm-2:01 am

1 stop13h 35m

San Juan Luis Munoz Marin Intl

seg 4/13

9:10 pm-9:37 pm

1 stop24h 27m

$182

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

sáb 2/7

12:04 pm-11:59 pm

1 stop10h 55m

San Juan Luis Munoz Marin Intl

sáb 2/14

1:52 pm-11:39 pm

1 stop10h 47m

$182

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

ter 2/3

3:21 pm-11:59 pm

1 stop7h 38m

San Juan Luis Munoz Marin Intl

ter 3/3

5:25 pm-11:39 pm

1 stop7h 14m

$182

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

seg 2/2

8:27 pm-3:26 pm

1 stop17h 59m

San Juan Luis Munoz Marin Intl

qua 2/4

4:36 pm-11:09 am

1 stop19h 33m

$183

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 20 results
1
2

Best time to book a flight from Trenton to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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 San Juan

What is the cheapest month to book a flight from Trenton, New Jersey to San Juan?

Currently, March is the cheapest month in which you can book a flight from Trenton, New Jersey to San Juan (average of $62). Flying from Trenton, New Jersey to San Juan in August is currently the most expensive (average of $138). 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.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated janeiro 22, 2026.
Get a feel of what it's like to fly with Frontier from Trenton to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Frontier
5.7
Fair
3,057 reviews

Crew

6.6

Food

4.6

Entertainment

4.3

Boarding

6.0

Overall

5.7

Comfort

5.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

ATL - MDW

Flight was canceled. Late notification and limited help with booking another flight.
Frontier
5.7
Fair
3,057 reviews
Frontier
5.7
Fair
3,057 reviews

Crew

6.6

Food

4.6

Entertainment

4.3

Boarding

6.0

Overall

5.7

Comfort

5.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

ATL - MDW

Flight was canceled. Late notification and limited help with booking another flight.

Related info for your journey

Find useful and relevant information for your journey from Trenton to San Juan. 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 San Juan?

    Trenton-Mercer (TTN), located 4.8 mi from the city center, is the airport you fly out of when you book flights from Trenton to San Juan. 1 airline have flights from Trenton-Mercer to San Juan on a regular basis. Booking flights from Trenton-Mercer to San Juan should not be difficult; the airport handles an average of 0 outbound flights to San Juan per day.

  • How long is the flight from Trenton, New Jersey to San Juan?

    Departing from Trenton, New Jersey to San Juan will take you 24h 54m. There are 1596 mi between Trenton, New Jersey and San Juan.

  • What is the cheapest airline to fly from Trenton, New Jersey to San Juan round-trip?

    Cheapflights users have booked flights from Trenton, New Jersey to San Juan round-trip from $143. Users have found that Frontier is 43% cheaper than the other options available to this destination.

  • Can I find deals for flights from Trenton to San Juan that include hotel bookings?

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

  • How can I find direct flights from Trenton to San Juan?

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

  • Can I find deals for business class flights from Trenton to San Juan?

    Yes. Cheapflights offers flight deals from Trenton to San Juan 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 San Juan?

    Currently, March is the cheapest month in which you can book a flight from Trenton, New Jersey to San Juan (average of $62). Flying from Trenton, New Jersey to San Juan in August is currently the most expensive (average of $138). 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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Alternative routes for Trenton to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Trenton to San Juan

Discover the top airline that operate flights from Trenton to San Juan. 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 janeiro 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$143Average$335FlexibilityNo cancel feeOn-time62%

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