No delays reported for UA 1742 (SMF → IAD) as of 6:47 PM ET. It arrived on time 92% of the time in June-August 2026. When it was late, the average delay was 1h 21m. 3.3% of flights were cancelled. Right now there are no reported delays at SMF, IAD.
Looks on time
Next leg SMF → IAD, scheduled 8:09 AM local time. No delays at SMF right now, and it usually runs on time.
Cancellation risk: Medium 3.3% of its flights were cancelled in June-August 2026.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check United for official times.
Before you fly
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| SMF → IAD Sacramento, CA to Washington, DC | 8:09 AM → 4:15 PM | 92% |
Local times. Schedules change; check your booking.
How reliable is UA 1742?
| Arrived on time (within 15 min) | 92% |
| Average delay when late | 81 min |
| Cancelled | 3.3% |
| Diverted | 1.1% |
| Flights tracked | 92 |
Best and worst days to fly UA 1742
UA 1742 was most reliable on Wednesdays (100% on time) and least reliable on Mondays (82%).
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by United to the Department of Transportation.
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the United app.
United delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is UA 1742 delayed today?
Right now there are no reported delays at SMF, IAD. Checked 6:47 PM ET. For this flight's gate and exact status, check the United app.
Is UA 1742 usually on time?
UA 1742 arrived within 15 minutes of schedule 92% of the time in June-August 2026, with an average delay of 81 minutes when late.
How often is UA 1742 cancelled?
3.3% of UA 1742 flights were cancelled in June-August 2026.