Schedule: the flights that flew on Wednesday, Oct 21, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1421
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 28
DL 1421 · SFO → LAX
departs 9:48 AM PT · arrives 11:13 AM PT
Forecast issued Tue 1:00 AM ET · 36h before departure
Watch this flight
Other days
Today 20%
Wed 10/28
Thu 10/29 14%
Fri 10/30 23%
Sat 10/31 18%
Sun 11/1 30%
Mon 11/2 29%
Odds over time
Arrive at LAX more than 15 minutes late?
14%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
14%
Leave 15+ late
11%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.5d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at LAX more than 15 minutes late?
Calm-weather odds: 12% · changed +0 pts in 24h
+0 pts
14%
Yes 14%
No 86%
Leave SFO more than 15 minutes late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
11%
Yes 11%
No 89%
Arrive at LAX more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
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 LAX?
On time or early
85%
15–30 min late
7%
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
↑
LAX is prone to delays
↑
Arrivals into LAX at that hour are often late
↑
SFO is prone to delays
↓
Mostly benign weather forecast at SFO
↓
Wednesdays in October are usually quieter than average
Weather at each end
SFO (origin)
Gusts 13 kt Ceiling none (clear) Visibility 10+ mi Precip none
LAX (destination)
Gusts 11 kt Ceiling 4,400 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.