ON TIMEBOARD
SLC Salt Lake City

LWS → SLC on time

Lewiston Nez Perce (Lewiston, ID) to Salt Lake City (Salt Lake City, UT). Every scheduled flight, September 2025 to August 2026.

On time
93%
arrived < 15 min late
Cancelled
0.0%
365 flights
Typical arrival
−13 min
median vs schedule
When late
+140 min
average delay
Flights / day
1
1 airline

93% of flights from Lewiston to Salt Lake City arrived on time over the past 12 months. That is better than the typical U.S. route. 4% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for LWS → SLC: when a flight was late, it was under 45 minutes late 33% of the time. About 1 in 23 flights landed an hour or more late, and 1 in 61 three hours or more; 0.0% were cancelled outright.

Share of all 365 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Delta Air Lines36593%0.0%−13 min4.4%+140 minSkyWest

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at LWS). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%noon departures: 91% on time (296 flights)9112p1 p.m. departures: too few flights1p2 p.m. departures: too few flights (69 flights)2p
LWS → SLC, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

By month

Each calendar month pooled over 2023–2026.

40%70%100%Jan: too few flights (93 flights)JanFeb: too few flights (85 flights)FebMar: too few flights (93 flights)MarApr: too few flights (90 flights)AprMay: too few flights (93 flights)MayJun: too few flights (90 flights)JunJul: too few flights (93 flights)JulAug: too few flights (93 flights)AugSep: too few flights (90 flights)SepOct: too few flights (93 flights)OctNov: too few flights (90 flights)NovDec: too few flights (93 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday53——
Tuesday52——
Wednesday52——
Thursday52——
Friday52——
Saturday52——
Sunday52——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Airline (crew, maintenance, ops) 83%Severe weather 13%Air traffic & airport (NAS) 4%

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
DL 383312:16 p.m.25592%0.0%−14 minSkyWest

Questions

How often are flights from LWS to SLC on time?

93% of 365 scheduled flights from Lewiston, ID to Salt Lake City, UT arrived within 15 minutes of schedule between September 2025 and August 2026. 0.0% were cancelled.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.