Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 2570
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 2570 · ORD → BOS
departs 10:28 AM CT · arrives 1:59 PM ET
Forecast issued Wed 5:00 PM ET · 66h before departure
Watch this flight
Other days
Today 53%
Thu 10/1 33%
Fri 10/2 16%
Sat 10/3
Sun 10/4 16%
Mon 10/5 18%
Tue 10/6 14%
Odds over time
Arrive at BOS more than 15 minutes late?
10%
chance · ±0 pts
−5 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
10%
Leave 15+ late
13%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.6d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 10% · changed −5 pts in 24h
−5 pts
10%
Yes 10%
No 90%
Leave ORD more than 15 minutes late?
Calm-weather odds: 13% · changed −2 pts in 24h
−2 pts
13%
Yes 13%
No 87%
Arrive at BOS more than an hour late?
Calm-weather odds: 3% · changed −1 pt in 24h
−1 pt
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BOS?
On time or early
90%
15–30 min late
3%
30 min–1 hour late
5%
1–2 hours late
1%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
10am departures from ORD are often late
↑
This flight has been late 24% of the time recently
↓
Mostly benign weather forecast at ORD
↓
BOS usually runs smoothly
Weather at each end
ORD (origin)
Gusts 8 kt Ceiling none (clear) Visibility 10+ mi Precip none
BOS (destination)
Gusts 14 kt Ceiling none (clear) 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.