| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 03 | PHL | DTW | 22:52 | 23:58 |
Delayed
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Frontier Airlines Flight F99521 connects Philadelphia, United States to Detroit, United States, taking off from Philadelphia International Airport PHL and landing at Detroit Metropolitan Wayne County Airport DTW.
How long is the F99521 flight from Philadelphia to Detroit?
The average flight time from Philadelphia to Detroit is 1 hour and 6 minutes. The flight distance is 728 km / 452 miles and the average flight speed is 662 km/h / 411 mph.
How many F99521 flights are operated per week?
1 flight per week. The flight F99521 is operated on Thursday.
What is the On-Time Performance (OTP) of Frontier Airlines Flight F99521 Philadelphia to Detroit?
The Airportia On-Time Performance Rating for Frontier Airlines Flight F99521 is 4.3/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest F99521 flight?
The latest flight took off on Thursday, June 4th, 2026 with the flight status being En-Route on 23:58.
How else can the flight F99521 be referenced as?
This Frontier Airlines flight can also be referenced as FFT9521, F9 9521, FFT 9521.
How often is flight F99521 delayed?
On average, 100% of all F99521 flights are delayed. The average delay is 43 minutes.
Can I get compensation for my delayed or cancelled F99521 flight or baggage issues?
If your F99521 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our F99521 Flight Tracker above for more details.
Other flights departing from Philadelphia PHL: AA2253, AA5478, AA5945, AA6546
Other flights arriving at Detroit DTW: DL708, DL2896, DL1718, DL1014
All flights connecting Philadelphia PHL to Detroit DTW.