Best time to fly out of Lewiston Nez Perce (LWS)
The early-flight folk wisdom holds up at Lewiston Nez Perce: departures in the 6–8am band left on time 92.1% of the time, against 86.7% in the 12–2pm band. These are historical odds, not forecasts. The records say what happened on this schedule over three years; they know nothing about tomorrow’s thunderstorm.
Data through June 2026 · Bureau of Transportation Statistics
On-time rate by hour and day
On this page, “on time” means a departure that pushed back less than 15 minutes behind its scheduled time — the Bureau of Transportation Statistics definition, and the one airlines are held to.
| Departure time | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| Before 6am | – | – | – | – | – | – | – |
| 6–8am | 94 | 89 | 93 | 92 | 93 | 90 | 94 |
| 8–10am | – | – | – | – | – | – | – |
| 10am–12pm | – | – | – | – | – | – | – |
| 12–2pm | 89 | 84 | 90 | 91 | 87 | 83 | 84 |
| 2–4pm | – | – | – | – | – | – | – |
| 4–6pm | – | – | – | – | – | – | – |
| 6–8pm | – | – | – | – | – | – | – |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
The steadiest stretch at LWS was 6–8am — 92.1% of departures left on time across 933 flights. The weakest was 12–2pm at 86.7%.
The year at LWS
January was the hard month at LWS: 84% of departures left on time, across 248 flights. April was the easy one at 94.3%. Each month pools three years of that month, so a single bad week does not decide it.
| Month | Share departures that left on time | Flights |
|---|---|---|
| January | 84% | 248 |
| February | 88.8% | 200 |
| March | 94% | 216 |
| April | 94.3% | 210 |
| May | 92.6% | 217 |
| June | 90.5% | 210 |
| July | 88% | 217 |
| August | 89.4% | 216 |
| September | 91% | 210 |
| October | 90% | 240 |
| November | 89.6% | 240 |
| December | 86.9% | 248 |
Airlines at LWS
Every airline with at least 100 departures from LWS, busiest first. These are that airline’s departures from this airport only — its record across the country sits on its own page.
| Airline | Left on time | Typical delay | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 89.8% | 119 min | 0.4% | 2,672 |
What delays out of LWS were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 293 flights that departed LWS and ran 15 minutes late or more, the delay minutes break down with 65.5% put down to airline operations and 18.4% to severe weather.
- Late-arriving aircraft 11.3%
- Airline operations 65.5%
- Air traffic & airport volume 4.4%
- Severe weather 18.4%
- Security 0.4%
Late-arriving aircraft is the knock-on category: the plane came in late, so it went out late again. It is why a 7am problem in Newark is still a problem in Denver at dinnertime, and why it is usually the biggest slice on the bar.
If you are connecting through LWS
Of 2,673 scheduled arrivals into LWS, 88.5% reached the gate less than 15 minutes behind schedule. Of the 289 arrivals that ran late, 58.5% were no more than 45 minutes behind — which is the difference between a tight connection and a new boarding pass.
Work out a specific layover — pick the airport and the minutes you have, and the tool reads the same arrival records back as a share.
Busiest routes out of LWS
Ranked by flights, with the share that arrived on time at the far end. Where a route carries enough flights for a page of its own the chip goes there; otherwise it goes to the destination airport.
LWS in one number
Lewiston Nez Perce (LWS)
Rank 242 of 363 US airports by departures. Steadiest stretch of the day: 6–8am. Hardest month: January.
Questions about LWS
- What is the best time of day to fly out of Lewiston Nez Perce?
- 6–8am. Departures in that band left on time 92.1% of the time across 933 flights, July 2023 through June 2026 — the best of the ten bands in the day. The 12–2pm band was the weakest at 86.7%.
- What is the worst month to fly out of LWS?
- January: 84% of the departures that flew left on time, with 248 scheduled. April was the other end of the year at 94.3%. Each figure pools three years of that calendar month.
- How often are flights cancelled at LWS?
- 0.4% of scheduled departures were cancelled over July 2023 through June 2026. Cancellations are counted against everything scheduled, not against everything that flew — a rate that looks small still adds up to real people in a rebooking line.