Schedule: the flights that flew on Friday, Oct 23, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1655
SCHEDULED · TYPICAL SCHEDULE
Friday, October 30 Tomorrow
DL 1655 · BOS → SFO
departs 5:05 PM ET · arrives 8:51 PM PT
Forecast issued Thu 6:00 AM ET · 35h before departure
Watch this flight
Other days
Today 33%
Fri 10/30
Sat 10/31 35%
Sun 11/1 48%
Mon 11/2 36%
Tue 11/3 35%
Wed 11/4 45%
Odds over time
Arrive at SFO more than 15 minutes late?
27%
chance · ±7 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
31%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.7d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 25% · changed −1 pt in 24h
−1 pt
27%
Yes 27%
No 73%
Leave BOS more than 15 minutes late?
Calm-weather odds: 27% · changed +1 pt in 24h
+1 pt
31%
Yes 31%
No 69%
Arrive at SFO more than an hour late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SFO?
On time or early
72%
15–30 min late
5%
30 min–1 hour late
11%
1–2 hours late
5%
Over 2 hours late
5%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into SFO at that hour are often late
↑
This flight has been late 30% of the time recently
↑
5pm departures from BOS are often late
↓
Mostly benign weather forecast at BOS
↓
Other factors
Weather at each end
BOS (origin)
Gusts 21 kt Ceiling 10,000 ft Visibility 10+ mi Precip none
SFO (destination)
Gusts 16 kt Ceiling 4,500 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.