$75 Cheap Spirit Airlines flights Philadelphia (PHL) to Detroit (DTW)

Landing cheap one-way Spirit Airlines flights from PHL to DTW from $75 on Expedia is simple — just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $134 for your next adventure.**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.

Start searching one to three months ahead of your departure date to find cheap fares on Spirit Airlines flights from Philadelphia Intl. Airport (PHL) to Detroit Metropolitan Wayne County Airport (DTW). 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 reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, 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.

Leaving PHL at 11:02AM UTC-5, the earliest Spirit Airlines flight to DTW arrives at 1:02PM UTC-5. Traveling early means you'll be less likely to encounter delays or cancellations.* After something later? The last Spirit Airlines flight from PHL to DTW departs at 11:02AM UTC-5 and touches down at 1:02PM UTC-5.*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.

Offering a rewarding loyalty program, Spirit Airlines is a popular choice for many passengers flying from PHL to DTW. Plus, if you're a Free Spirit and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.