$113 Cheap Flights from San Juan (SJU) to Trenton (TTN)

View $113 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to Trenton–Mercer Airport (TTN)

Cheap Flights from San Juan to Trenton (SJU-TTN)

Prices were available within the past 7 days and start at $113 for one-way flights and $226 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Oct 30 - Mon, Nov 3
SJU
San Juan
TTN
Trenton
$226 Roundtrip, just found
$226
Roundtrip
just found
Select American Airlines flight, departing Thu, Oct 30 from San Juan to Trenton, returning Mon, Nov 3, priced at $226 just found
Frontier Airlines
Sat, Oct 4 - Sat, Oct 25
SJU
San Juan
TTN
Trenton
$244 Roundtrip, just found
$244
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 4 from San Juan to Trenton, returning Sat, Oct 25, priced at $244 just found
Frontier Airlines
Sun, Nov 2 - Mon, Nov 10
SJU
San Juan
TTN
Trenton
$246 Roundtrip, found 2 days ago
$246
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Nov 2 from San Juan to Trenton, returning Mon, Nov 10, priced at $246 found 2 days ago
American Airlines
Thu, Nov 6 - Sun, Nov 9
SJU
San Juan
TTN
Trenton
$248 Roundtrip, just found
$248
Roundtrip
just found
Select American Airlines flight, departing Thu, Nov 6 from San Juan to Trenton, returning Sun, Nov 9, priced at $248 just found
American Airlines
Wed, Nov 5 - Sun, Nov 9
SJU
San Juan
TTN
Trenton
$248 Roundtrip, found 2 days ago
$248
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Nov 5 from San Juan to Trenton, returning Sun, Nov 9, priced at $248 found 2 days ago
Frontier Airlines
Sun, Nov 2 - Mon, Dec 8
SJU
San Juan
TTN
Trenton
$250 Roundtrip, found 4 days ago
$250
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, Nov 2 from San Juan to Trenton, returning Mon, Dec 8, priced at $250 found 4 days ago
Frontier Airlines
Wed, Oct 8 - Mon, Dec 8
SJU
San Juan
TTN
Trenton
$253 Roundtrip, found 2 days ago
$253
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Oct 8 from San Juan to Trenton, returning Mon, Dec 8, priced at $253 found 2 days ago
American Airlines
Thu, Oct 30 - Mon, Nov 3
SJU
San Juan
TTN
Trenton
$260 Roundtrip, just found
$260
Roundtrip
just found
Select American Airlines flight, departing Thu, Oct 30 from San Juan to Trenton, returning Mon, Nov 3, priced at $260 just found
Frontier Airlines
Sat, Oct 4 - Thu, Oct 9
SJU
San Juan
TTN
Trenton
$262 Roundtrip, just found
$262
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 4 from San Juan to Trenton, returning Thu, Oct 9, priced at $262 just found
American Airlines
Sat, Dec 6 - Sat, Dec 13
SJU
San Juan
TTN
Trenton
$265 Roundtrip, found 2 days ago
$265
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Dec 6 from San Juan to Trenton, returning Sat, Dec 13, priced at $265 found 2 days ago

Find the cheapest month to fly from San Juan (SJU) to Trenton (TTN)

February is typically the cheapest month to fly

From $128 - $628 per traveler.

Alternative airports near Trenton

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Mercer TTN. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $310
TTN
Mercer
CheapestClosest
Average driving time to city center10 min
Flights from $310

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN) cost?
Lock in a cheap one-way flight from $113 or cheap return flight from $226 from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN)?
October is the cheapest month to fly from SJU to TTN. Traveling outside of peak seasons is often the key to scoring lower fares.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN)?
To find the cheapest airline that'll fly you from SJU to TTN, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN)?
There aren't any daily direct flights available from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from SJU to TTN?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN)?
To touch down at Mercer Airport (TTN) without delays, select a flight that leaves from Luis Munoz Marin Intl. Airport (SJU) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Trenton from Luis Munoz Marin Intl. Airport (SJU)?
Book a direct flight from Luis Munoz Marin Intl. Airport (SJU) to Trenton and touch down at one of these hubs:

  • Liberty Intl. Airport (EWR)
  • Philadelphia Intl. Airport (PHL)
  • Wilmington, DE (ILG-New Castle)

Is it cheaper to buy a plane ticket from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN) last-minute?
Booking your ticket from SJU to TTN just before your getaway is usually more expensive. However, if there's some wiggle room with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a SJU to TTN flight and hotel package?
Compared with arranging flights and hotels separately, booking a SJU to TTN flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place takes the hassle out of planning your trip. Just secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to Mercer Airport (TTN)?
It's generally possible to reschedule or cancel your SJU to TTN flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Luis Munoz Marin Intl.
Destination airport
Mercer
Airlines serving
American Airlines, Frontier Airlines
Roundtrip price
$226
Distance
1597 mi

Book with confidence

Book with confidence

San Juan to Trenton Flights

The cheapest times to fly from San Juan to Trenton

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Juan to Trenton are during the month of October. You can find some of the cheapest flights from San Juan to Trenton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Juan to Trenton

Sunday is one of the best days to book for cheap flights from San Juan to Trenton: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Juan to Trenton

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Juan to Trenton in 2025. You can also book with separate airlines for your outbound and return journeys, from $113 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Juan to Trenton flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Juan to Trenton airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Juan to Trenton Flights

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Explore a world of travel with Expedia

*Available to One Key members.