Wednesday, October 7 · our forecast odds · issued Mon 12:00 AM ET · 14 nonstops

Wed, Oct 7: YX 3678 at 05:09 is the safest bet, 3% chance of being 15+ min late; evening flights run 9–23%.

Safest bet that day YX 3678 PIT 05:09 → ORD 05:58 · 3% chance 15+ min late Riskiest UA 602 PIT 17:58 → ORD 18:38 · 23% chance 15+ min late · usually 58% on time

Against a calm day 11% average chance a nonstop arrives 15+ min late; 10% for the same flights on a calm-weather day

Every nonstop on Wed, Oct 7

12-month record →

Ranked by the chance of arriving 15+ minutes late, with each flight’s on-time record over Aug 2025 – Jul 2026 beside it. Times are local. Pick a flight for its forecast. Click a column to sort.


YX 3678 Republic	PIT 05:09	ORD 05:58	3%	2%	0.5%	no record
AA 4478 American flown by Republic Flight history →	PIT 11:37	ORD 12:29	5%	2%	0.5%	89%
UA 3461 United flown by Republic Flight history →	PIT 08:36	ORD 09:30	6%	2%	0.5%	89%
AA 4539 American flown by Republic Flight history →	PIT 07:52	ORD 08:37	6%	2%	0.5%	81%
AA 4525 American flown by Republic Flight history →	PIT 10:11	ORD 10:56	6%	2%	0.5%	79%
UA 455 United Flight history →	PIT 10:54	ORD 11:42	7%	2%	0.6%	90%
UA 1803 United Flight history →	PIT 06:57	ORD 07:38	8%	2%	0.6%	89%
AA 640 American	PIT 06:23	ORD 07:07	9%	4%	0.7%	no record
UA 3577 United flown by Republic Flight history →	PIT 16:14	ORD 17:05	9%	3%	0.6%	88%
UA 2180 United Flight history →	PIT 14:10	ORD 14:55	13%	4%	0.6%	75%
UA 6023 United flown by SkyWest Flight history →	PIT 19:46	ORD 20:24	16%	6%	0.6%	75%
AA 2675 American	PIT 16:06	ORD 16:54	18%	5%	0.7%	no record
AA 2671 American	PIT 20:38	ORD 21:19	21%	5%	0.7%	no record
UA 602 United Flight history →	PIT 17:58	ORD 18:38	23%	5%	0.5%	58%

How these are worked out. Each flight’s odds are our forecast for that day; 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 Wed, Oct 7 (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