DTT to PHL, to Philadelphia International Airport Cheap Flights

Based on HopeGoo data, Frontier Airlines offers one-way fares as low as US$73 on Cheapest nonstop routes (e.g. DTW to PHL on Tue, Mar 3), while Frontier Airlines offers Cheapest nonstop round-trips from US$60 departing on Mon, Feb 23 and returning on Fri, Feb 27.

It takes about 1 hour 39 minutes to fly from Detroit to Philadelphia.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Detroit to Philadelphia is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Detroit to Philadelphia, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Mar 3, with one-way flights priced at just US$73. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Philadelphia travel is around January. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Detroit to Philadelphia is August, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Detroit to Philadelphia on February 23, 2026 with Frontier Airlines, with prices starting at US$60.

The time difference between Philadelphia and Detroit is 0h.

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