Route on-time record
SLC to SMF: most on-time flights and the best time to fly
Salt Lake City (Salt Lake City International Airport) to Sacramento (Sacramento International Airport). 2,156 nonstop flights in Jun 2025 to May 2026, 86% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was Southwest 4311 at 7:05 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SLC → SMF
Salt Lake City to Sacramento: 2,156 nonstop flights a year
On time (12 months)
86%
Cancelled
0.6%
avg delay 9 min
Best time to leave
Before 9 AM
95% on time vs 75% 6 to 9 PM
Most reliable airline
Delta
87% 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 · Southwest 4311
7:05 AM → 7:50 AM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 98% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 75%).
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 4311 fares Opens this date on Aviasales#2 · Delta 1367
7:50 AM → 8:43 AM1h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.9%
- Avg arrival delay
- 6 min
- Arrived on time 94% of the time (328 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 75%).
Strong track record · 328 flights
Find Delta 1367 fares Opens this date on Aviasales#3 · Delta 1582
10:49 PM → 11:42 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.6%
- Avg arrival delay
- 5 min
- Arrived on time 90% of the time (347 flights, Jun 2025 to May 2026).
Strong track record · 347 flights
Find Delta 1582 fares Opens this date on Aviasales#4 · Delta 1423
11:15 AM → 12:05 PM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.3%
- Avg arrival delay
- 8 min
- Arrived on time 87% of the time (357 flights, Jun 2025 to May 2026).
Strong track record · 357 flights
Find Delta 1423 fares Opens this date on Aviasales#5 · Southwest 648
10:05 PM → 10:50 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 87% of the time (15 flights, Jun 2025 to May 2026).
- 94% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 648 fares Opens this date on Aviasales#6 · Delta 2585
5:15 PM → 6:00 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 95%
- Cancelled
- 5.0%
- Avg arrival delay
- 2 min
- Arrived on time 95% of the time (19 flights, Jun 2025 to May 2026).
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find Delta 2585 fares Opens this date on Aviasales#7 · Delta 1342
3:39 PM → 4:28 PM1h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 83%
- Cancelled
- 1.4%
- Avg arrival delay
- 13 min
- Arrived on time 83% of the time (342 flights, Jun 2025 to May 2026).
Strong track record · 342 flights
Find Delta 1342 fares Opens this date on Aviasales#8 · Southwest 264
10:45 AM → 11:30 AM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
82%
chance on time
- On time (history)
- 78%
- Cancelled
- 3.0%
- Avg arrival delay
- 11 min
- Arrived on time 78% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 264 fares Opens this date on Aviasales#9 · Southwest 4312
8:55 PM → 9:40 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 72% of the time (46 flights, Jun 2025 to May 2026).
- Never cancelled in 46 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 75% on time; Before 9 AM: 95%).
- 71% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 46 flights
Find Southwest 4312 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines87%
1,510 flights · 88% on time as flown · 0.8% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)86%
73 flights · 85% on time as flown · 0.4% cancel
- Southwest Airlines83%
573 flights · 83% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
482 flights · avg delay 4 min
- 9 AM to noon87%
433 flights · avg delay 8 min
- 3 to 6 PM82%
583 flights · avg delay 13 min
- 6 to 9 PM75%
212 flights · avg delay 17 min
- After 9 PM88%
398 flights · avg delay 6 min
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
- Airline (crew, maintenance, boarding)52%
- Late-arriving aircraft42%
- Air traffic control and airport volume5%
- Severe weather1%
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
SLC to SMF questions
- What time of day is best to fly SLC to SMF?
- Before 9 AM: 95% of flights arrived on time, against 75% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from SLC to SMF?
- Delta, with a season-adjusted 87% chance of operating and arriving on time over 1,510 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 SLC to SMF?
- January (82% on time); the best was September (92%), 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 SLC
- SMF to SLC (return)
- SLC to DEN 77%
- SLC to PHX 84%
- SLC to SEA 79%
- SLC to LAX 86%
- SLC to DFW 78%
- SLC to LAS 78%
- SLC to SFO 72%
- SLC to ORD 75%
- SLC to ATL 86%
- SLC to SAN 84%
- SLC to PDX 88%
- SLC to IAH 85%
Live status: FAA delays and ground stops