C5 4959 · GSP → IAD

departs 2:53 PM ET · arrives 4:47 PM ET

Forecast issued Sun 6:00 AM ET · 9h before departure

Arrive at IAD more than 15 minutes late?

32% chance · ±0 pts −5 pts · 24h

HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.

How late will it get to IAD?

On time or early
67%
15–30 min late
5%
30 min–1 hour late
18%
1–2 hours late
4%
Over 2 hours late
4%
Cancelled
1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ Cloud base down to 200 ft, visibility down to 0.5 mi, 1.6 in of rain forecast at IAD that day

↑ Cloud base down to 200 ft, visibility down to 0.75 mi forecast at GSP that day

↑ This route's recent record

↓ Other factors

↓ Sundays in October are usually quieter than average

Weather at each end

GSP (origin) Gusts23 kt Ceiling200 ft Visibility0.75 mi Precip0.34 in

IAD (destination) Gusts22 kt Ceiling200 ft Visibility0.5 mi Precip1.82 in

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.

C5 4959 · GSP → IAD

Odds over time

How late will it get to IAD?