Lewiston (LWS) to Salt Lake City (SLC): On-Time Performance
Data through May 2026
When you fly LWS to SLC matters as much as anything else about the booking: the route swung from 100% on-time in March 2025 to just 84% in July 2024. Across the full period the route averages 93% on-time against a national 78%.
- On-time
- 93%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 0.1%
- Flights/day
- 1.0
- last 12 months
- Duration
- 1h 37m
- scheduled
- Distance
- 461 mi
Monthly on-time trend
Best time to fly from LWS to SLC
Departure time makes little difference on this route — on-time rates stay within a few points across the day.
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 97% | 7 min |
| Tuesday | 91% | 15 min |
| Wednesday | 93% | 9 min |
| Thursday | 93% | 6 min |
| Friday | 90% | 14 min |
| Saturday | 96% | 5 min |
| Sunday | 90% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Airline operations78%
- National airspace system3%
- Weather19%
Frequently asked questions
- How often are flights from LWS to SLC delayed?
- 7% of LWS–SLC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 9 minutes.
- What is the best time of day to fly from LWS to SLC?
- Departures around 2 p.m. have the best record (97% on-time), while departures around 12 p.m. have the worst (93%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LWS to SLC?
- The scheduled LWS–SLC flight time averages 1h 37m over 461 miles. Actual arrival times vary — flights on this route land 15+ minutes late 7% of the time.
- How often are LWS to SLC flights cancelled?
- 0.1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from LWS to SLC?
- July 2024 was the roughest month in this dataset, with only 84% of arrivals on time. The best was March 2025 at 100%. If your dates are flexible, that 16-point gap is worth planning around.
Explore related pages
More routes from LWS
Based on 730 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.