No clear winner: United’s SMF → IAD flights land within a few points of 96% on time whatever the hour.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Airlines on this route
Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
| United | 365 | 96% | 1.6% | 32 min |
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
No flight on this route ran 150+ times in the year.
All 1 flights on this route →Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| United | SMF | IAD | 5h 00m | 96% | 1.6% | 365 | Flying now |
Alternatives with one stop
All connections →| UnitedDetails → | SMF 06:00 → SFO 06:54UA 1954 | 1h 16m San Francisco | SFO 08:10 → IAD 16:25UA 1849 | 7h 25m | 94% | 77% |
| DeltaDetails → | SMF 13:30 → SLC 16:12DL 1423 | 1h 18m Salt Lake City | SLC 17:30 → IAD 23:30DL 847 | 7h 00m | 91% | 75% |
| DeltaDetails → | SMF 13:21 → MSP 18:49DL 1701 | 1h 06m Minneapolis | MSP 19:55 → IAD 23:25DL 4129 · flown by SkyWest | 7h 04m | 98% | 74% |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON