Schedule: a typical summer Tuesday (the flights of Jul 28, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
REPUBLIC · FLIGHT YX 3487
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
YX 3487 · IAD → CHS
departs 12:35 PM ET · arrives 2:27 PM ET
Forecast issued Tue 10:00 PM ET · 9h after departure
Watch this flight
Other days
Tue 9/29
Today 10%
Sat 10/3 10%
Sun 10/4 19%
Mon 10/5 11%
Odds over time
Arrive at CHS more than 15 minutes late?
8%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
8%
Leave 15+ late
7%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at CHS more than 15 minutes late?
Calm-weather odds: 7% · changed +2 pts in 24h
+2 pts
8%
Yes 8%
No 92%
Leave IAD more than 15 minutes late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Arrive at CHS more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to CHS?
On time or early
92%
15–30 min late
4%
30 min–1 hour late
2%
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
↑
Arrivals into CHS at that hour are often late
↓
Mostly benign weather forecast at IAD
↓
Tuesdays in September are usually quieter than average
Weather at each end
IAD (origin)
Gusts 9 kt Ceiling 4,200 ft Visibility 8.8 mi Precip none
CHS (destination)
Gusts 10 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.