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.
ENVOY · FLIGHT MQ 3581
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Yesterday
MQ 3581 · HSV → DCA
departs 6:27 PM CT · arrives 9:30 PM ET
Forecast issued Wed 10:00 PM ET · 2h after departure
Watch this flight
Other days
Wed 9/30
Today 23%
Fri 10/2 31%
Sun 10/4 21%
Mon 10/5 21%
Tue 10/6 17%
Wed 10/7 20%
Odds over time
Arrive at DCA more than 15 minutes late?
18%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
18%
Leave 15+ late
13%
Arrive 1h+ late
3%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at DCA more than 15 minutes late?
Calm-weather odds: 18% · changed +0 pts in 24h
+0 pts
18%
Yes 18%
No 82%
Leave HSV more than 15 minutes late?
Calm-weather odds: 13% · changed +1 pt in 24h
+1 pt
13%
Yes 13%
No 87%
Arrive at DCA more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to DCA?
On time or early
81%
15–30 min late
9%
30 min–1 hour late
5%
1–2 hours late
2%
Over 2 hours late
<1%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into DCA at that hour are often late
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 27% of the time recently
↓
Mostly benign weather forecast at DCA
↓
Wednesdays in September are usually quieter than average
Weather at each end
HSV (origin)
Gusts 8 kt Ceiling none (clear) Visibility 10+ mi Precip none
DCA (destination)
Gusts 10 kt Ceiling 4,700 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.