Lewiston Nez Perce County (LWS) Delays and On-Time Departures
Lewiston, ID · ranked 6th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
92.5% of the 729 flights scheduled to depart Lewiston (LWS) in the last 12 months left on time, 15.0 points above the US average of 77.4%.
That ranks 6th of 333 US airports tracked on this site, with 0.1% of departures cancelled.
Over 24 months, Monday was the most reliable day (94% on time) and December the worst month (88%).
Best time of day to fly out of Lewiston (LWS)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.3% | 0.0% | 185 |
| 6am–7am | 92.4% | 0.0% | 92 |
| 7am–8am | 93.2% | 0.5% | 551 |
| 8am–9am | 96.8% | 0.0% | 31 |
| 9am–10am | 94.5% | 0.0% | 55 |
| 12pm–1pm | 90.4% | 0.2% | 545 |
| 2pm–3pm | 96.6% | 0.0% | 89 |
| 5pm–6pm | 91.7% | 0.0% | 96 |
Airlines at LWS ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 92.5% | 91.5% | 0.1% | 729 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of LWS
On-time departures by day, 24 months.
Best month to fly out of LWS
On-time departures by month, 24 months.
Holiday travel at Lewiston (LWS)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 94.3% | +2.0 pts | 0.0% | 35 |
| Christmas & New Year (Dec 20 - Jan 3) | 90.5% | -1.7 pts | 1.3% | 75 |
| Summer peak (Jun 15 - Aug 15) | 91.6% | -0.7 pts | 0.0% | 262 |
| All other days | 92.3% | — | 0.2% | 1,272 |
Monthly on-time departure trend at LWS
On-time departure % each month, with the 12-month US average for reference.
Routes from Lewiston (LWS)
Every route from LWS with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| LWS → Salt Lake City (SLC) | 92.9% | 0.0% | 365 |
| LWS → Seattle (SEA) | 90.0% | 0.3% | 364 |