Tickets
Any day
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: DL 2427 at 11:30 is the safest bet, 16% chance of being 15+ min late; the others run 28%.

Nonstops that day

All 2 nonstops →
DL 2427 Delta Flight history → ATL 11:30 COS 12:32 16% 4% 0.7% 83%
DL 971 Delta Flight history → ATL 19:59 COS 21:07 28% 7% 0.8% 71%

Best connections that day, one ticket

Ranked by chance you reach Colorado Springs on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Colorado Springs is 2 h behind Atlanta). Layovers up to 4 hours. Pick a connection for its 12-month details.

DeltaDetails → ATL 10:10 → SLC 12:10DL 387 3h 41m Salt Lake City SLC 15:51 → COS 17:35DL 4449 · flown by SkyWest 9h 25m 100% 83%
DeltaDetails → ATL 15:20 → SLC 17:18DL 526 3h 41m Salt Lake City SLC 20:59 → COS 22:41DL 3788 · flown by SkyWest 9h 21m 100% 81%
UnitedDetails → ATL 07:05 → IAH 08:15UA 532 1h 41m Houston IAH 09:56 → COS 11:25UA 6122 · flown by Mesa 6h 20m 95% 81%
UnitedDetails → ATL 15:57 → IAH 17:23UA 3992 · flown by Mesa 2h 43m Houston IAH 20:06 → COS 21:37UA 5459 · flown by SkyWest 7h 40m 94% 79%
AmericanDetails → ATL 08:22 → DFW 09:55AA 1567 1h 48m Dallas-Fort Worth DFW 11:43 → COS 12:52AA 6390 · flown by SkyWest 6h 30m 96% 73%
AmericanDetails → ATL 06:01 → DFW 07:33AA 2770 49m Dallas-Fort Worth DFW 08:22 → COS 09:19AA 1552 5h 18m 89% 72%
UnitedDetails → ATL 08:52 → DEN 10:05UA 340 1h 25m Denver DEN 11:30 → COS 12:19UA 738 5h 27m 93% 71%
UnitedDetails → ATL 11:10 → DEN 12:28UA 1327 3h 07m Denver DEN 15:35 → COS 16:32UA 5546 · flown by SkyWest 7h 22m 98% 63%
Tight connection: often missed
DeltaDetails → ATL 17:55 → SLC 19:56DL 653 1h 03m Salt Lake City SLC 20:59 → COS 22:41DL 3788 · flown by SkyWest 6h 46m 65% 53%
AmericanDetails → ATL 15:11 → DFW 16:39AA 3104 48m Dallas-Fort Worth DFW 17:27 → COS 18:34AA 6267 · flown by SkyWest 5h 23m 64% 38%
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