$90 Cheap Frontier Airlines flights Trenton (TTN) to Detroit (DTW)

Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap Frontier Airlines return flights from $165 from TTN to DTW. Affordable one-way fares from $90 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.

Look for cheap Frontier Airlines flights from Mercer Airport (TTN) to Detroit Metropolitan Wayne County Airport (DTW) one to three months ahead of your departure day. 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 journey, the ideal day to book a domestic flight is usually 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 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.

Find Frontier Airlines's earliest flights from TTN to DTW by selecting the "Early Morning" and "Morning" filters. Not only will you arrive at your destination sooner, early departures also experience 20% fewer 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.

Journey from TTN to DTW with Frontier Airlines and you'll 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.