Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 1825
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Yesterday
DL 1825 · LGA → DCA
departs 9:20 PM ET · arrives 10:58 PM ET
Forecast issued Tue 10:00 PM ET · 1h after departure
Watch this flight
Other days
Tue 9/29
Today 26%
Thu 10/1 28%
Fri 10/2 56%
Sun 10/4 31%
Mon 10/5 27%
Tue 10/6 22%
Odds over time
Arrive at DCA more than 15 minutes late?
35%
chance · ±0 pts
+5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
35%
Leave 15+ late
37%
Arrive 1h+ late
13%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at DCA more than 15 minutes late?
Calm-weather odds: 35% · changed +5 pts in 24h
+5 pts
35%
Yes 35%
No 65%
Leave LGA more than 15 minutes late?
Calm-weather odds: 38% · changed +6 pts in 24h
+6 pts
37%
Yes 37%
No 63%
Arrive at DCA more than an hour late?
Calm-weather odds: 13% · changed +3 pts in 24h
+3 pts
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DCA?
On time or early
64%
15–30 min late
13%
30 min–1 hour late
9%
1–2 hours late
10%
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
↑
This flight has been late 34% of the time recently
↑
9pm departures from LGA are often late
↑
Arrivals into DCA at that hour are often late
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at DCA
Weather at each end
LGA (origin)
Gusts 11 kt Ceiling 1,600 ft Visibility 10+ mi Precip none
DCA (destination)
Gusts 7 kt Ceiling 4,000 ft Visibility 9.6 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.