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 2646
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
DL 2646 · BOS → ORD
departs 4:15 PM ET · arrives 6:19 PM CT
Forecast issued Wed 12:00 AM ET · 40h before departure
Watch this flight
Other days
Today 60%
Thu 10/1
Fri 10/2 28%
Sat 10/3 20%
Sun 10/4 31%
Mon 10/5 30%
Tue 10/6 33%
Odds over time
Arrive at ORD more than 15 minutes late?
56%
chance · ±7 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
56%
Leave 15+ late
38%
Arrive 1h+ late
33%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 16% · changed −2 pts in 24h
−2 pts
56%
Yes 56%
No 44%
Leave BOS more than 15 minutes late?
Calm-weather odds: 20% · changed +1 pt in 24h
+1 pt
38%
Yes 38%
No 62%
Arrive at ORD more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
33%
Yes 33%
No 67%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to ORD?
On time or early
43%
15–30 min late
7%
30 min–1 hour late
16%
1–2 hours late
20%
Over 2 hours late
13%
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, visibility down to 2 mi, 1.5 in of rain forecast at ORD that day
↑
Arrivals into ORD at that hour are often late
↑
This flight has been late 37% of the time recently
↓
Other factors
↓
Thursdays in October are usually quieter than average
Weather at each end
BOS (origin)
Gusts 16 kt Ceiling none (clear) Visibility 1 mi Precip none
ORD (destination)
Gusts 11 kt Ceiling 300 ft Visibility 2 mi Precip 1.48 in
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.