$657 Cheap Flights from White Plains (HPN) to Trenton (TTN)

View $657 flight on Wed, Oct 8, 2025Opens in a new window

Popular airlines from Westchester County Airport (HPN) to Trenton–Mercer Airport (TTN)

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Cheap Flights from White Plains to Trenton (HPN-TTN)

Prices were available within the past 7 days and start at $657 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Westchester County Airport (HPN) to Mercer Airport (TTN) cost?
Lock in a cheap one-way flight from $657 or cheap return flight from Westchester County Airport (HPN) to Mercer Airport (TTN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Westchester County Airport (HPN) to Mercer Airport (TTN)?
Traveling in is a good way to save, as it's the cheapest month for flights between HPN and TTN. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Westchester County Airport (HPN) to Mercer Airport (TTN)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest HPN to TTN flight.
How many flights per day from Westchester County Airport (HPN) to Mercer Airport (TTN)?
There are no daily nonstop flights from Westchester County Airport (HPN) to Mercer Airport (TTN). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from HPN to TTN?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Westchester County Airport (HPN) to Mercer Airport (TTN)?
To land at Mercer Airport (TTN) on time, book a flight that leaves Westchester County Airport (HPN) 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.
Is it cheaper to buy a plane ticket from Westchester County Airport (HPN) to Mercer Airport (TTN) last-minute?
Booking your plane ticket from HPN to TTN just before your trip is usually more expensive. However, if you're flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a HPN to TTN flight and hotel package?
You'll typically save money by booking a HPN to TTN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your preferred accommodations and flights, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Westchester County Airport (HPN) to Mercer Airport (TTN)?
If you reserved your HPN to TTN flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Travel information

Origin airport
Westchester County
Destination airport
Mercer
Distance
80 mi

Book with confidence

Book with confidence

White Plains to Trenton Flights

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

 

The best time to book a flight from White Plains to Trenton

Sunday is one of the best days to book for cheap flights from White Plains 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 White Plains 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 White Plains to Trenton in 2025. You can also book with separate airlines for your outbound and return journeys, from $657 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 White Plains 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 White Plains 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.

 

White Plains to Trenton Flights

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*Available to One Key members.