$91 Cheap Frontier Airlines flights Detroit (DTW) to Trenton (TTN)

Grab cheap round-trip Frontier Airlines flights from $180 from DTW to TTN by filtering your results from “Price (lowest to highest)” on Expedia. Or look for deals from $91 for a one-way trip.**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.

Frontier Airlines flights to Trenton are often cheaper in the low-season months of February and January. Whether you need a return or one-way ticket, you could land a better deal then.

Search for affordable Frontier Airlines flights from Detroit Metropolitan Wayne County Airport (DTW) to Mercer Airport (TTN) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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 the “Nonstop” filter when looking for direct Frontier Airlines flights from DTW to TTN. You’ll also be able to compare other airlines servicing the same direct trip.

To find the earliest departure from DTW to TTN with Frontier Airlines, filter your results by “Morning” and “Early Morning.” Choosing an early flight generally means you’re less likely to experience cancellations.**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.

Frontier Airlines flights from Detroit Metropolitan Wayne County Airport (DTW) to Trenton touch down at Mercer Airport (TTN). This is the main entry point to this city.

Journey from DTW to TTN with Frontier Airlines and enjoy a host of benefits including a rewarding loyalty program. When booking through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*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 may apply if you cancel or change your booking more than 24 hours after it’s confirmed. To secure tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when you search for flights. For more information on changing or canceling your reservation, go to “Trips,” select your flight and tick “Manage Booking.”