Schedule: the flights that flew on Wednesday, Oct 7, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 9939
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 14
DL 9939 · SAL → JFK
departs 4:01 PM CST · arrives 10:39 PM ET
Forecast issued Mon 10:00 AM ET · 56h before departure
Watch this flight
Other days
Wed 10/14
Thu 10/15 18%
Fri 10/16 11%
Odds over time
Arrive at JFK more than 15 minutes late?
27%
chance · ±2 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
25%
Arrive 1h+ late
11%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.8d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at JFK more than 15 minutes late?
Calm-weather odds: 9% · changed – in 24h
–
27%
Yes 27%
No 73%
Leave SAL more than 15 minutes late?
Calm-weather odds: 10% · changed – in 24h
–
25%
Yes 25%
No 75%
Arrive at JFK more than an hour late?
Calm-weather odds: 4% · changed – in 24h
–
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
1%
Yes 1%
No 99%
How late will it get to JFK?
On time or early
72%
15–30 min late
10%
30 min–1 hour late
7%
1–2 hours late
8%
Over 2 hours late
2%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Thunderstorms forecast at SAL that day
↑
Arrivals into JFK at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
Wednesdays in October are usually quieter than average
↓
Mostly benign weather forecast at JFK
Weather at each end
SAL (origin)
Gusts — Ceiling — Visibility — Precip none
JFK (destination)
Gusts 18 kt Ceiling 2,500 ft Visibility 6 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.