Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · connections flying that day

Sun, Oct 11: WN 271 at 05:10 is the safest bet, 3% chance of being 15+ min late; the others run 28%.

Nonstops that day

All 2 nonstops →


WN 271 Southwest	COS 05:10	DAL 08:07	3%	1%	0.7%	no record
WN 1280 Southwest	COS 18:15	DAL 21:12	28%	6%	0.8%	no record

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.


Delta Details →	COS 06:00 → ATL 10:54DL 1074	3h 05m Atlanta	ATL 13:59 → DAL 15:03DL 512	8h 03m	99%	77%
Delta Details →	COS 13:40 → ATL 18:44DL 2427	2h 31m Atlanta	ATL 21:15 → DAL 22:25DL 1104	7h 45m	95%	67%

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 Sun, Oct 11 (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