Best Time to Fly LWS to SLC: On-Time Stats by Hour & Airline
Lewiston Nez Perce County → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
365 flights were scheduled from Lewiston (LWS) to Salt Lake City (SLC) in the last 12 months, and 92.9% of those that flew arrived on time, 15.2 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
October has been the best month (98% on time) and Sunday the weakest day of the week (88%).
0.0% of flights were cancelled, versus 1.8% nationally.
LWS to SLC 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 |
|---|---|---|---|---|
| SkyWest Airlines | 92.9% | 128 min | 0.0% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LWS to SLC
On-time arrival % by scheduled departure hour (local time), 730 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12pm–1pm | 92.7% | 0.2% | 545 |
| 2pm–3pm | 96.6% | 0.0% | 89 |
| 5pm–6pm | 92.7% | 0.0% | 96 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LWS to SLC
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 | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 91.9% | -1.7 pts | 0.0% | 124 |
| All other days | 93.6% | — | 0.0% | 562 |
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).