SLC to LWS flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to Lewiston Nez Perce County Airport · 461 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SLC or LWS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Salt Lake City (SLC) to Lewiston (LWS) arrived on time 93% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 3% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 12pm did best (97% on time); around 10am did worst (92%).
- Monday was the most reliable day to fly (100% on time) and Sunday the least (87%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (79%).
Which airline is most on time from SLC to LWS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 93% | 0.0% | 5 min | 2.7% | 365 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am92%265 flights
- 12pm97%89 flights
- 4pm90%10 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday100%0.0% cancelled
- Tuesday92%0.0% cancelled
- Wednesday90%0.0% cancelled
- Thursday98%0.0% cancelled
- Friday94%0.0% cancelled
- Saturday90%0.0% cancelled
- Sunday87%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)79%
- Extreme weather18%
- Air traffic control & airport congestion3%
- Late-arriving aircraft0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SLC to LWS: common questions
- How often are SLC to LWS flights on time?
- 93% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Salt Lake City to Lewiston cancelled?
- 0.0% of scheduled flights were cancelled (0 of 365).
- How long are typical delays?
- Across all flights the average arrival delay was 5 min (early arrivals count as zero). Flights that were late arrived 65 min behind schedule on average, and 2.7% of flights were an hour or more late.
- How long is taxi time at SLC?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LWS to SLC — 93% on time
More flights from Salt Lake City
More flights to Lewiston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SLC → LWS, nonstop flights by US airlines that report to the DOT. How we calculate this.