Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 2021
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
F9 2021 · PHL → DTW
departs 6:26 AM ET · arrives 8:17 AM ET
Forecast issued Tue 5:00 PM ET · 13h before departure
Watch this flight
Other days
Today 17%
Wed 9/30
Thu 10/1 13%
Fri 10/2 13%
Sat 10/3 12%
Sun 10/4 13%
Mon 10/5 16%
Odds over time
Arrive at DTW more than 15 minutes late?
15%
chance · ±1 pts
+8 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
15%
Leave 15+ late
10%
Arrive 1h+ late
7%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
2d
1d
Now
6h
Departs
Lands
Arrive at DTW more than 15 minutes late?
Calm-weather odds: 13% · changed +8 pts in 24h
+8 pts
15%
Yes 15%
No 85%
Leave PHL more than 15 minutes late?
Calm-weather odds: 11% · changed +3 pts in 24h
+3 pts
10%
Yes 10%
No 90%
Arrive at DTW more than an hour late?
Calm-weather odds: 8% · changed +2 pts in 24h
+2 pts
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DTW?
On time or early
84%
15–30 min late
6%
30 min–1 hour late
2%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
This flight has been late 28% of the time recently
↑
PHL is prone to delays
↓
Early flights usually leave on time
↓
Wednesdays in September are usually quieter than average
Weather at each end
PHL (origin)
Gusts 7 kt Ceiling 6,000 ft Visibility 10+ mi Precip none
DTW (destination)
Gusts 14 kt Ceiling 6,000 ft Visibility 10+ mi Precip none
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.