tailodds FORECAST
Tickets
Any day
Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 8:00 PM ET · connections flying that day

Sat, Oct 10: no forecasts for this route’s flights; their 12-month records are below.

Nonstops that day

All 2 nonstops →
UA 4958 United flown by CommuteAir no forecast: 12-month record GSP 10:30 IAD 12:08 8% 4% 1.3% 92%
UA 4313 United flown by CommuteAir no forecast: 12-month record GSP 19:40 IAD 21:19 17% 14% 3.5% 83%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Dulles on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival. Layovers up to 4 hours. Pick a connection for its 12-month details.
DeltaDetails → GSP 08:45 → ATL 09:51DL 1619 2h 36m Atlanta ATL 12:27 → IAD 14:26DL 2135 5h 41m 98% 89%
DeltaDetails → GSP 06:00 → ATL 07:03DL 3028 1h 12m Atlanta ATL 08:15 → IAD 10:00DL 1324 4h 00m 96% 88%
DeltaDetails → GSP 07:10 → DTW 08:57DL 876 1h 25m Detroit DTW 10:22 → IAD 11:47DL 3082 4h 37m 97% 85%
DeltaDetails → GSP 11:02 → ATL 12:06DL 2158 3h 20m Atlanta ATL 15:26 → IAD 17:14DL 1695 6h 12m 100% 82%
DeltaDetails → GSP 11:12 → DTW 13:04DL 5195 · flown by Endeavor 1h 43m Detroit DTW 14:47 → IAD 16:22DL 1787 5h 10m 96% 82%
AmericanDetails → GSP 11:15 → CLT 12:34AA 6099 · flown by Piedmont 3h 32m Charlotte CLT 16:06 → IAD 17:47AA 5447 · flown by PSA 6h 32m 97% 78%
AmericanDetails → GSP 07:01 → DFW 08:44AA 1254 1h 33m Dallas-Fort Worth DFW 10:17 → IAD 14:26AA 524 7h 25m 94% 76%
AmericanDetails → GSP 17:14 → CLT 18:26AA 5440 · flown by PSA 2h 49m Charlotte CLT 21:15 → IAD 22:42AA 2608 5h 28m 98% 74%
Tight connection: often missed
UnitedDetails → GSP 17:43 → ORD 19:00UA 5524 · flown by SkyWest 48m Chicago ORD 19:48 → IAD 22:33UA 304 4h 50m 66% 48%
How these are worked out. Each flight’s odds are our forecast for that day (typical odds until the weather forecast covers it); flights of airlines we don’t forecast yet use their 12-month record and are marked. Makes the connection: the first flight’s 12-month lateness curve, scaled so its chance of arriving 15+ min late matches the day’s forecast, at the layover minus the 45-minute minimum (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled × second flight within 15 minutes, each from the day’s forecast.

About this data: forecast odds from our model for Sat, Oct 10 (newest published update); 12-month records from US DOT on-time data, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. JSON