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: WN 1218 at 05:10 is the safest bet, 3% chance of being 15+ min late; the others run 27%.

Nonstops that day

All 2 nonstops →


WN 1218 Southwest Flight history →	COS 05:10	DAL 08:00	3%	1%	0.6%	92%
WN 1219 Southwest Flight history →	COS 16:40	DAL 19:30	27%	5%	0.6%	31%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	COS 05:45 → DEN 06:45WN 1220	2h 00m Denver	DEN 08:45 → DAL 11:40WN 1360	4h 55m	97%	88%
Delta Details →	COS 06:00 → ATL 10:54DL 1074	3h 05m Atlanta	ATL 13:59 → DAL 15:03DL 512	8h 03m	99%	83%
Southwest Details →	COS 06:45 → PHX 07:35WN 4256	3h 20m Phoenix	PHX 10:55 → DAL 15:20WN 3255	7h 35m	100%	82%
Delta Details →	COS 13:40 → ATL 18:44DL 2427	2h 31m Atlanta	ATL 21:15 → DAL 22:25DL 1104	7h 45m	96%	74%
Southwest Details →	COS 09:35 → HOU 13:05WN 1223	2h 55m Houston	HOU 16:00 → DAL 17:10WN 40	6h 35m	100%	74%
Southwest Details →	COS 11:10 → DEN 12:05WN 4325	3h 50m Denver	DEN 15:55 → DAL 19:00WN 1388	6h 50m	100%	72%
Southwest Details →	COS 14:40 → MDW 18:00WN 1228	2h 40m Chicago	MDW 20:40 → DAL 22:55WN 1005	7h 15m	100%	68%
Southwest Details →	COS 14:35 → PHX 15:25WN 1230	2h 25m Phoenix	PHX 17:50 → DAL 22:15WN 1347	6h 40m	95%	65%

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