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.
FRONTIER · FLIGHT F9 4371
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
F9 4371 · DEN → SNA
departs 6:40 AM MT · arrives 8:05 AM PT
Forecast issued Sat 9:00 PM ET · 36h before departure
Watch this flight
Other days
Sun 10/4 18%
Mon 10/5
Thu 10/8 14%
Fri 10/9 10%
Odds over time
Arrive at SNA more than 15 minutes late?
11%
chance · ±1 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
11%
Leave 15+ late
12%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.4d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SNA more than 15 minutes late?
Calm-weather odds: 12% · changed +1 pt in 24h
+1 pt
11%
Yes 11%
No 89%
Leave DEN more than 15 minutes late?
Calm-weather odds: 11% · changed +0 pts in 24h
+0 pts
12%
Yes 12%
No 88%
Arrive at SNA more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SNA?
On time or early
88%
15–30 min late
4%
30 min–1 hour late
3%
1–2 hours late
4%
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
↑
F9's recent on-time record
↑
SNA is prone to delays
↑
DEN is busy at that time
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 18 kt Ceiling none (clear) Visibility 10+ mi Precip none
SNA (destination)
Gusts 17 kt Ceiling none (clear) Visibility 9 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.