Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sun 4:00 PM ET · connections flying that day

Fri, Oct 9: one nonstop, WN 4604 at 19:55, with a 26% chance of arriving 15+ min late.

Nonstops that day

All 1 nonstop →


WN 4604 Southwest Flight history →	PIT 19:55	HOU 21:55	26%	7%	0.7%	46%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Houston on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Houston is 1 h behind Pittsburgh). Layovers up to 4 hours. Pick a connection for its 12-month details.


Southwest Details →	PIT 06:30 → BNA 07:05WN 1935	55m Nashville	BNA 08:00 → HOU 10:05WN 532	4h 35m	97%	89%
Southwest Details →	PIT 05:45 → BWI 06:55WN 4417	1h 30m Baltimore	BWI 08:25 → HOU 10:40WN 4158	5h 55m	100%	87%
Delta Details →	PIT 05:45 → ATL 07:25DL 1504	1h 16m Atlanta	ATL 08:41 → HOU 09:45DL 1509	5h 00m	97%	87%
Southwest Details →	PIT 06:05 → DAL 07:55WN 4465	2h 35m Dallas	DAL 10:30 → HOU 11:45WN 23	6h 40m	100%	86%
Delta Details →	PIT 07:05 → ATL 08:50DL 1383	2h 15m Atlanta	ATL 11:05 → HOU 12:10DL 1195	6h 05m	98%	83%
Southwest Details →	PIT 08:45 → MDW 09:10WN 3378	1h 00m Chicago	MDW 10:10 → HOU 12:50WN 2783	5h 05m	92%	81%
Delta Details →	PIT 10:16 → ATL 12:02DL 1380	3h 10m Atlanta	ATL 15:12 → HOU 16:22DL 2381	7h 06m	100%	80%
American Details →	PIT 06:01 → DFW 08:09AA 3329	2h 42m Dallas-Fort Worth	DFW 10:51 → HOU 12:16AA 6413 · flown by SkyWest	7h 15m	98%	78%
Tight connection: often missed
Southwest Details →	PIT 20:15 → MDW 20:45WN 4073	55m Chicago	MDW 21:40 → HOU 00:15 +1WN 954	5h 00m	73%	53%
Southwest Details →	PIT 18:55 → MCO 21:15WN 3376	1h 05m Orlando	MCO 22:20 → HOU 23:50WN 2645	5h 55m	74%	34%

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 Fri, Oct 9 (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