Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Mon 12:00 PM ET · connections flying that day

Fri, Oct 9: one nonstop, WN 1223 at 09:35, with a 12% chance of arriving 15+ min late.

Nonstops that day

All 1 nonstop →


WN 1223 Southwest Flight history →	COS 09:35	HOU 13:05	12%	4%	1.4%	90%

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 ahead of Colorado Springs). Layovers up to 4 hours. Pick a connection for its 12-month details.


Southwest Details →	COS 05:10 → DAL 08:00WN 1218	2h 30m Dallas	DAL 10:30 → HOU 11:45WN 23	5h 35m	100%	86%
Southwest Details →	COS 05:45 → DEN 06:45WN 1220	3h 30m Denver	DEN 10:15 → HOU 13:55WN 1543	7h 10m	98%	82%
American Details →	COS 05:35 → DFW 08:37AA 6408 · flown by SkyWest	2h 14m Dallas-Fort Worth	DFW 10:51 → HOU 12:16AA 6413 · flown by SkyWest	5h 41m	95%	76%
American Details →	COS 08:01 → DFW 10:56AA 782	3h 25m Dallas-Fort Worth	DFW 14:21 → HOU 15:44AA 5002 · flown by SkyWest	6h 43m	98%	75%
Southwest Details →	COS 06:45 → PHX 07:35WN 4256	2h 50m Phoenix	PHX 10:25 → HOU 15:05WN 3067	7h 20m	98%	75%
American Details →	COS 10:44 → DFW 13:36AA 1697	3h 20m Dallas-Fort Worth	DFW 16:56 → HOU 18:19AA 6385 · flown by SkyWest	6h 35m	97%	72%
Delta Details →	COS 13:40 → ATL 18:44DL 2427	2h 01m Atlanta	ATL 20:45 → HOU 21:51DL 2051	7h 11m	94%	72%
American Details →	COS 15:46 → DFW 18:47AA 1695	3h 51m Dallas-Fort Worth	DFW 22:38 → HOU 23:56AA 5465 · flown by PSA	7h 10m	97%	72%
Tight connection: often missed
Southwest Details →	COS 16:55 → DEN 17:45WN 1222	55m Denver	DEN 18:40 → HOU 22:15WN 606	4h 20m	74%	52%
Southwest Details →	COS 16:40 → DAL 19:30WN 1219	1h 00m Dallas	DAL 20:30 → HOU 21:40WN 57	4h 00m	73%	49%

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