Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
REPUBLIC · FLIGHT YX 4391
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
YX 4391 · PWM → ORD
departs 6:19 AM ET · arrives 8:30 AM CT
Forecast issued Wed 5:00 PM ET · 61h before departure
Watch this flight
Other days
Today 16%
Thu 10/1 14%
Fri 10/2 8%
Sat 10/3
Sun 10/4 6%
Mon 10/5 6%
Tue 10/6 5%
Odds over time
Arrive at ORD more than 15 minutes late?
6%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
6%
Leave 15+ late
5%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.3d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Leave PWM more than 15 minutes late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
Arrive at ORD 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 −1 pt in 24h
−1 pt
<1%
Yes <1%
No 99%
How late will it get to ORD?
On time or early
93%
15–30 min late
3%
30 min–1 hour late
<1%
1–2 hours late
2%
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
↑
ORD is busy at that time
↓
Early flights usually leave on time
↓
Other factors
Weather at each end
PWM (origin)
Gusts 12 kt Ceiling none (clear) Visibility 10+ mi Precip 0.02 in
ORD (destination)
Gusts 8 kt Ceiling none (clear) 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.