Cheap Frontier Airlines flights West Palm Beach (PBI) to Trenton (TTN)

Apply the “Price (lowest to highest)” filter on Expedia to look for cheap Frontier Airlines round-trip flights from PBI to TTN. Affordable one-way fares are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

February is one of the most affordable months to fly to Trenton with Frontier Airlines. You could also find great deals on return and one-way fares in January.

Begin your search one to three months ahead of your departure date to score cheaper fares on Frontier Airlines flights from Palm Beach Intl. Airport (PBI) to Mercer Airport (TTN). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use our “Nonstop” filter when looking for direct Frontier Airlines flights from PBI to TTN. You’ll also be able to compare other airlines offering the same nonstop trip.

Sort your results by “Early Morning” and “Morning” to find the earliest departures from PBI to TTN. Heading off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Take a Frontier Airlines flight from Palm Beach Intl. Airport (PBI) to Trenton, and you’ll most likely land at Mercer Airport (TTN). This is the airline’s primary hub here.

A rewarding loyalty program and the opportunity to collect points through Frontier Miles are the start of the reasons to leave from PBI to TTN with Frontier Airlines. Plus, when you sign up to Expedia’s free One Key™ program, you can earn OneKeyCash™* alongside Frontier Airlines’s loyalty program earnings. It’s yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee generally applies if you modify or cancel your flight more than 24 hours after confirmation. To find flexible fares, select our “No cancel fee” or “Changes included” filter when looking for flights. For more details on changing or canceling your reservation, go to “Trips,” select your flight and click on “Manage Booking.”