Route on-time record
SMF to IAD: most on-time flights and the best time to fly
Sacramento (Sacramento International Airport) to Dulles (Washington Dulles International Airport). 365 nonstop flights in Jun 2025 to May 2026, 94% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was United 1742 at 7:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SMF → IAD
Sacramento to Dulles: 365 nonstop flights a year
On time (12 months)
94%
Cancelled
0.8%
avg delay 3 min
Best time to leave
No clear winner
Most reliable airline
United
93% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · United 1742
7:00 AM → 3:03 PM5h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
97%
chance on time
- On time (history)
- 100%
- Cancelled
- 1.6%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (62 flights, Jun 2025 to May 2026).
- Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 62 flights
Find United 1742 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines93%
365 flights · 94% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
346 flights · avg delay 3 min
Best day: Tuesday (94%). Worst: Monday (86%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Air traffic control and airport volume56%
- Airline (crew, maintenance, boarding)41%
- Late-arriving aircraft2%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
SMF to IAD questions
- Which airline is most on time from SMF to IAD?
- United, with a season-adjusted 93% chance of operating and arriving on time over 365 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on SMF to IAD?
- July (68% on time); the best was October (97%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from SMF
- IAD to SMF (return)
- SMF to LAX 86%
- SMF to SAN 74%
- SMF to SEA 82%
- SMF to LAS 80%
- SMF to DEN 82%
- SMF to PHX 82%
- SMF to BUR 85%
- SMF to SNA 84%
- SMF to SLC 88%
- SMF to ONT 85%
- SMF to PDX 82%
- SMF to LGB 86%
Most on-time flights from SMF on every route →
Live status: FAA delays and ground stops