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San Juan

$89+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
TTN — SJU
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Find 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 November 26, 2025.

This Super.com deal was found by Cheapflights users on 11/25. 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.
Sat 12/65:58 pmTTN - SJU
1 stop7h 52mFrontier
Sat 12/1311:05 amSJU - TTN
1 stop13h 54mFrontier
Deal found 11/25$200
This Super.com deal was found by Cheapflights users on 11/25. 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.
Thu 12/115:58 pmTTN - SJU
1 stop7h 52mFrontier
Thu 12/185:09 pmSJU - TTN
1 stop7h 50mFrontier
Deal found 11/25$216
This Frontier deal was found by Cheapflights users on 11/26. 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 12/55:58 pmTTN - SJU
1 stop7h 52mFrontier
Thu 12/115:09 pmSJU - TTN
1 stop7h 50mFrontier
Deal found 11/26$217
This Super.com deal was found by Cheapflights users on 11/24. 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.
Thu 12/45:58 pmTTN - SJU
1 stop14h 57mFrontier
Sun 12/73:55 amSJU - TTN
1 stop14h 08mFrontier
Deal found 11/24$237
This CheapOair deal was found by Cheapflights users on 11/24. 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 12/45:58 pmTTN - SJU
1 stop21h 01mFrontier
Fri 12/53:55 amSJU - TTN
1 stop14h 08mFrontier
Deal found 11/24$238
This CheapOair deal was found by Cheapflights users on 11/23. 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.
Mon 12/299:21 pmTTN - SJU
1 stop28h 29mFrontier
Thu 1/294:36 pmSJU - TTN
1 stop27h 02mFrontier
Deal found 11/23$243
This Super.com deal was found by Cheapflights users on 11/25. 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.
Thu 12/115:58 pmTTN - SJU
1 stop7h 52mFrontier
Sat 12/133:55 amSJU - TTN
1 stop17h 18mFrontier
Deal found 11/25$246
This Super.com deal was found by Cheapflights users on 11/26. 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.
Fri 12/55:58 pmTTN - SJU
1 stop7h 52mFrontier
Fri 12/1211:05 amSJU - TTN
1 stop6h 58mFrontier
Deal found 11/26$251

Cheap 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 November 26, 2025.

Round-trip from

$180
(CheapOair)

One-way from

$89
(Super.com)

Popular in

September

Cheapest in

March

Average price

$284
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. 17% potential increase in price ($53 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 November 2025
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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 November 26, 2025.
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

Thu 1/8

7:58 pm-2:34 am

1 stop29h 36m

San Juan Luis Munoz Marin Intl

Mon 1/12

6:30 am-11:59 pm

1 stop18h 29m

$180

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Sat 2/28

7:13 pm-9:55 am

1 stop13h 42m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:55 am-11:59 pm

1 stop21h 04m

$180

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Tue 2/24

8:10 am-9:55 am

1 stop24h 45m

San Juan Luis Munoz Marin Intl

Mon 3/2

9:37 pm-10:02 pm

1 stop25h 25m

$180

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Sat 2/7

12:04 pm-11:59 pm

1 stop10h 55m

San Juan Luis Munoz Marin Intl

Wed 2/11

11:05 am-10:02 pm

1 stop11h 57m

$180

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Thu 2/12

6:00 am-11:37 pm

1 stop16h 37m

San Juan Luis Munoz Marin Intl

Wed 2/18

3:55 am-11:59 pm

1 stop21h 04m

$180

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Sat 1/24

8:19 pm-9:54 am

1 stop12h 35m

San Juan Luis Munoz Marin Intl

Wed 1/28

4:36 pm-11:09 am

1 stop19h 33m

$180

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Sun 1/11

2:32 pm-2:50 am

1 stop11h 18m

San Juan Luis Munoz Marin Intl

Wed 1/14

8:57 am-9:44 pm

1 stop13h 47m

$214

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Fri 1/9

6:00 am-1:49 pm

1 stop6h 49m

San Juan Luis Munoz Marin Intl

Tue 1/13

8:57 am-9:44 pm

1 stop13h 47m

$214

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Thu 2/26

9:59 pm-9:55 am

1 stop10h 56m

San Juan Luis Munoz Marin Intl

Fri 3/6

3:55 am-11:59 pm

1 stop21h 04m

$231

TrentonSan Juan

TTN - SJU

TTNSJU

Trenton-Mercer

Fri 2/20

9:59 pm-9:55 am

1 stop10h 56m

San Juan Luis Munoz Marin Intl

Sun 3/1

3:55 am-11:59 pm

1 stop21h 04m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 19 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.

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

Find hourly flight availability from Trenton to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 26, 2025.

It’s typically best to fly out from Trenton, New Jersey to San Juan at noon. Doing so could potentially save you 30% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 November 26, 2025.
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
5.8
Fair
3,099 reviews

Food

4.6

Crew

6.7

Overall

5.8

Boarding

6.0

Entertainment

4.4

Comfort

5.5

Reviews

1 / 20
6.0
Good

Anonymous,Nov 2025

MCO - RDU

Every time I fly frontier something happens. Last time I flew there was a fight at the gate. Shouting and cursing with kids all around. This time the flight wasn’t full so they allowed us to move seats if we wanted for more space. One guy moved to an exit row and was told he can’t sit there unless he paid extra. That started a fight between him and the flight crew. they called the police to remove him. Last year in NY there was a fight at the gate between the agent and a passenger. Always frontier airlines I’ve never seen this with any other airline. I would never bring my small children again who knows what could happen. Flight was also delayed coming back to Orlando. You get what you pay for with frontier.
Frontier
5.8
Fair
3,099 reviews
Frontier
5.8
Fair
3,099 reviews

Food

4.6

Crew

6.7

Overall

5.8

Boarding

6.0

Entertainment

4.4

Comfort

5.5

Reviews

1 / 20
6.0
Good

Anonymous,Nov 2025

MCO - RDU

Every time I fly frontier something happens. Last time I flew there was a fight at the gate. Shouting and cursing with kids all around. This time the flight wasn’t full so they allowed us to move seats if we wanted for more space. One guy moved to an exit row and was told he can’t sit there unless he paid extra. That started a fight between him and the flight crew. they called the police to remove him. Last year in NY there was a fight at the gate between the agent and a passenger. Always frontier airlines I’ve never seen this with any other airline. I would never bring my small children again who knows what could happen. Flight was also delayed coming back to Orlando. You get what you pay for with frontier.

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 29h 36m. 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 $119. Users have found that Frontier is 53% 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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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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$119Average$308FlexibilityNo cancel feeOn-time62%

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