Best Time to Fly GEG to SMF: On-Time Stats by Hour & Airline
Spokane International → Sacramento International
Data through July 2026 · Last updated October 18, 2026
607 flights were scheduled from Spokane (GEG) to Sacramento (SMF) in the last 12 months, and 86.8% of those that flew arrived on time, 9.2 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
March has been the best month (91% on time) and Monday the weakest day of the week (83%).
0.2% of flights were cancelled, versus 1.8% nationally.
GEG to SMF on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 86.8% | 50 min | 0.2% | 607 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GEG to SMF
On-time arrival % by scheduled departure hour (local time), 1,274 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 98.5% | 0.0% | 273 |
| 6am–7am | 95.7% | 0.0% | 140 |
| 7am–8am | Limited data | 17 | |
| 8am–9am | Limited data | 6 | |
| 9am–10am | Limited data | 1 | |
| 10am–11am | 82.8% | 0.0% | 64 |
| 11am–12pm | 87.8% | 0.0% | 148 |
| 12pm–1pm | 83.5% | 0.0% | 103 |
| 1pm–2pm | Limited data | 16 | |
| 2pm–3pm | Limited data | 20 | |
| 3pm–4pm | 80.0% | 0.0% | 30 |
| 4pm–5pm | 88.6% | 0.0% | 44 |
| 5pm–6pm | 74.4% | 0.4% | 255 |
| 6pm–7pm | 75.2% | 0.0% | 109 |
| 7pm–8pm | Limited data | 22 | |
| 9pm–10pm | Limited data | 26 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GEG to SMF
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 63.5% | -26.1 pts | 0.0% | 52 |
| Summer peak (Jun 15 - Aug 15) | 81.8% | -7.8 pts | 0.0% | 274 |
| All other days | 89.6% | — | 0.1% | 922 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).