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: DL 1074 at 06:00 is the safest bet, 5% chance of being 15+ min late; the others run 17%.

Nonstops that day

All 2 nonstops →


DL 1074 Delta Flight history →	COS 06:00	ATL 10:54	5%	2%	0.6%	93%
DL 2427 Delta Flight history →	COS 13:40	ATL 18:44	17%	4%	0.6%	83%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Atlanta on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Atlanta is 2 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	1h 30m Dallas	DAL 09:30 → ATL 12:35WN 1766	5h 25m	99%	87%
United Details →	COS 05:30 → DEN 06:35UA 4697 · flown by SkyWest	3h 25m Denver	DEN 10:00 → ATL 15:09UA 2424	7h 39m	100%	87%
Delta Details →	COS 18:16 → SLC 20:09DL 4449 · flown by SkyWest	3h 26m Salt Lake City	SLC 23:35 → ATL 05:14 +1DL 912	8h 58m	100%	84%
Delta Details →	COS 08:10 → SLC 10:09DL 3940 · flown by SkyWest	3h 26m Salt Lake City	SLC 13:35 → ATL 19:22DL 906	9h 12m	100%	83%
Southwest Details →	COS 06:10 → LAS 07:05WN 3313	1h 20m Las Vegas	LAS 08:25 → ATL 15:25WN 4482	7h 15m	98%	83%
Delta Details →	COS 11:10 → MSP 14:29DL 4089 · flown by SkyWest	2h 49m Minneapolis	MSP 17:18 → ATL 21:05DL 1036	7h 55m	99%	81%
United Details →	COS 08:45 → DEN 10:02UA 4725 · flown by SkyWest	3h 24m Denver	DEN 13:26 → ATL 18:30UA 1671	7h 45m	99%	80%
United Details →	COS 07:30 → IAH 11:03UA 4029 · flown by Mesa	3h 37m Houston	IAH 14:40 → ATL 17:54UA 1211	8h 24m	100%	77%
Tight connection: often missed
Southwest Details →	COS 14:40 → MDW 18:00WN 1228	50m Chicago	MDW 18:50 → ATL 21:50WN 4140	5h 10m	73%	55%

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