Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 2919
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
DL 2919 · BOS → SFO
departs 8:55 PM ET · arrives 12:33 AM PT
Forecast issued Sun 9:00 AM ET · 36h before departure
Watch this flight
Other days
Today 33%
Mon 10/5
Fri 10/9 29%
Odds over time
Arrive at SFO more than 15 minutes late?
23%
chance · ±4 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
23%
Leave 15+ late
31%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 16% · changed +1 pt in 24h
+1 pt
23%
Yes 23%
No 77%
Leave BOS more than 15 minutes late?
Calm-weather odds: 24% · changed +0 pts in 24h
+0 pts
31%
Yes 31%
No 69%
Arrive at SFO more than an hour late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
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 SFO?
On time or early
76%
15–30 min late
3%
30 min–1 hour late
11%
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
↑
8pm departures from BOS are often late
↑
Arrivals into SFO at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at SFO
↓
Mondays in October are usually quieter than average
Weather at each end
BOS (origin)
Gusts 25 kt Ceiling 2,200 ft Visibility 10+ mi Precip 0.03 in
SFO (destination)
Gusts 13 kt Ceiling none (clear) Visibility 7 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.