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: UA 5221 at 08:00 is the safest bet, 14% chance of being 15+ min late; the others run 38%.

Nonstops that day

All 2 nonstops →


UA 5221 United flown by SkyWest Flight history →	AMA 08:00	DEN 08:39	14%	6%	0.7%	88%
UA 4743 United flown by SkyWest Flight history →	AMA 17:20	DEN 18:06	38%	22%	1.1%	68%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	AMA 09:00 → IAH 10:52UA 4224 · flown by CommuteAir	1h 41m Houston	IAH 12:33 → DEN 14:17UA 2168	6h 17m	96%	75%
American Details →	AMA 05:01 → DFW 06:22AA 4257 · flown by Envoy	2h 13m Dallas-Fort Worth	DFW 08:35 → DEN 09:42AA 1756	5h 41m	99%	74%
American Details →	AMA 07:19 → DFW 08:40AA 4258 · flown by Envoy	2h 01m Dallas-Fort Worth	DFW 10:41 → DEN 11:46AA 2359	5h 27m	100%	71%
American Details →	AMA 10:15 → DFW 11:36AA 3920 · flown by Envoy	1h 41m Dallas-Fort Worth	DFW 13:17 → DEN 14:21AA 420	5h 06m	96%	61%
United Details →	AMA 15:18 → IAH 17:10UA 4816 · flown by CommuteAir	1h 09m Houston	IAH 18:19 → DEN 20:14UA 1654	5h 56m	88%	58%
American Details →	AMA 18:55 → DFW 20:16AA 3789 · flown by Envoy	2h 38m Dallas-Fort Worth	DFW 22:54 → DEN 00:07 +1AA 1722	6h 12m	97%	55%
American Details →	AMA 15:10 → DFW 16:39AA 3383 · flown by Envoy	3h 50m Dallas-Fort Worth	DFW 20:29 → DEN 21:32AA 577	7h 22m	97%	43%

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