Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 1555
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
DL 1555 · GRR → MSP
departs 7:18 PM ET · arrives 7:57 PM CT
Forecast issued Tue 8:00 PM ET · 47h before departure
Watch this flight
Other days
Today 30%
Wed 9/30 22%
Thu 10/1
Fri 10/2 13%
Sun 10/4 12%
Mon 10/5 11%
Odds over time
Arrive at MSP more than 15 minutes late?
16%
chance · ±5 pts
+3 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
16%
Leave 15+ late
20%
Arrive 1h+ late
7%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
Now
1d
12h
6h
Departs
Lands
Arrive at MSP more than 15 minutes late?
Calm-weather odds: 8% · changed +3 pts in 24h
+3 pts
16%
Yes 16%
No 84%
Leave GRR more than 15 minutes late?
Calm-weather odds: 11% · changed +0 pts in 24h
+0 pts
20%
Yes 20%
No 80%
Arrive at MSP more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
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 MSP?
On time or early
84%
15–30 min late
2%
30 min–1 hour late
6%
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
↑
Cloud base down to 300 ft, 0.7 in of rain forecast at GRR that day
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into MSP at that hour are often late
↓
GRR usually runs smoothly
↓
MSP usually runs smoothly
Weather at each end
GRR (origin)
Gusts 15 kt Ceiling 300 ft Visibility 3 mi Precip 0.73 in
MSP (destination)
Gusts 15 kt Ceiling 300 ft Visibility 0.5 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.