Schedule: the flights that flew on Tuesday, Oct 6, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1661
SCHEDULED · TYPICAL SCHEDULE
Tuesday, October 13 Tomorrow
DL 1661 · BOS → DCA
departs 2:31 PM ET · arrives 4:02 PM ET
Forecast issued Mon 1:00 AM ET · 38h before departure
Watch this flight
Other days
Today 33%
Tue 10/13
Wed 10/14 31%
Thu 10/15 26%
Fri 10/16 36%
Sun 10/18 23%
Odds over time
Arrive at DCA more than 15 minutes late?
28%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
23%
Arrive 1h+ late
9%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DCA more than 15 minutes late?
Calm-weather odds: 16% · changed +3 pts in 24h
+3 pts
28%
Yes 28%
No 72%
Leave BOS more than 15 minutes late?
Calm-weather odds: 15% · changed +3 pts in 24h
+3 pts
23%
Yes 23%
No 77%
Arrive at DCA more than an hour late?
Calm-weather odds: 3% · changed +4 pts in 24h
+4 pts
9%
Yes 9%
No 91%
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
71%
15–30 min late
9%
30 min–1 hour late
10%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 200 ft, visibility down to 1 mi forecast at BOS that day
↑
Arrivals into DCA at that hour are often late
↑
2pm departures from BOS are often late
↓
Tuesdays in October are usually quieter than average
↓
Mostly benign weather forecast at DCA
Weather at each end
BOS (origin)
Gusts 15 kt Ceiling 200 ft Visibility 1 mi Precip 0.03 in
DCA (destination)
Gusts 16 kt Ceiling none (clear) Visibility 8 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.