Cheap Flights from Philadelphia (PHL) to Trenton (TTN)

Popular airlines from Philadelphia Intl. Airport (PHL) to Trenton–Mercer Airport (TTN)

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Flights from Philadelphia (PHL) to Trenton (TTN)
Origin airport
Philadelphia Intl.
Destination airport
Mercer
Distance
35 mi

Philadelphia to Trenton Flights

The cheapest times to fly from Philadelphia 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 Philadelphia to Trenton are during the month of . You can find some of the cheapest flights from Philadelphia to Trenton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to Trenton

Sunday is one of the best days to book for cheap flights from Philadelphia 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 Philadelphia 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 Philadelphia to Trenton in 2026. You can also book with separate airlines for your outbound and return journeys, from 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 Philadelphia 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 Philadelphia 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.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN) cost?
Get a cheap one-way flight or cheap return flight from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN)?
Traveling in is a great way to save, as it's the cheapest month for flights between PHL and TTN. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from PHL to TTN. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN)?
You'll need to take a flight with a layover when traveling from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from PHL to TTN?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN)?
To touch down at Mercer Airport (TTN) on schedule, book a flight that leaves Philadelphia Intl. Airport (PHL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Philadelphia Intl. Airport (PHL)?
Compare your flight options from Philadelphia Intl. Airport (PHL) to LaGuardia Airport (LGA). This is the only airport in Trenton you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN) last-minute?
Booking your plane ticket from PHL to TTN right before your getaway is usually more expensive. However, if there's some wiggle room with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a PHL to TTN flight and hotel package?
Securing a PHL to TTN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our impressive range of stays and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Mercer Airport (TTN)?
In most instances, you can reschedule or cancel your PHL to TTN flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you want further details, visit our Customer Service portal.

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