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

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

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL) cost?
Grab a cheap one-way flight or cheap return flight from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL) 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 Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL)?
is the most affordable month to fly from TTN to PHL. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL)?
To find the cheapest airline that'll fly you from TTN to PHL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL)?
Nonstop flights from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from TTN to PHL?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on various factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL)?
Select a flight from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**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.
Is it cheaper to buy a plane ticket from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL) last-minute?
Last-minute bookings from TTN to PHL are typically more expensive. For the lowest rates, start looking for flights as early as possible. That being said, if you're flexible with your travel plans, it's possible to find a cheap fare just before your departure.
Is it cheaper to book a TTN to PHL flight and hotel package?
You can save money by booking a TTN to PHL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your ideal flights and accommodations, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Philadelphia Intl. Airport (PHL)?
It's usually possible to cancel or reschedule your TTN to PHL flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Mercer
Destination airport
Philadelphia Intl.
Distance
35 mi

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Trenton to Philadelphia Flights

The cheapest times to fly from Trenton to Philadelphia

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

 

The best time to book a flight from Trenton to Philadelphia

Sunday is one of the best days to book for cheap flights from Trenton to Philadelphia: 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 Trenton to Philadelphia

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 Trenton to Philadelphia in 2025. 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 Trenton to Philadelphia 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 Trenton to Philadelphia 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.

 

Trenton to Philadelphia Flights

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*Available to One Key members.