Carrier route record
OOSLC→GEG
SkyWest Airlines · Salt Lake City to Spokane
- Flights
- 694
- Period
- September 2025 to August 2026
- Share of route
- 42%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SLC to GEG earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 694 flights, with a median arrival 10 minutes early.
Set against the rest of the country, SkyWest's SLC to GEG record is 15 points better than the US average of 77.3%. That gap is worth roughly 154 fewer late arrivals for every thousand flights.
Key figures
On time
92.7%
Arrivals under 15 minutes late, of 687 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
0.14%
National rate is 1.89%
Whole route
85.9%
Every carrier on SLC to GEG, 1,668 flights
These figures cover 694 flights between September 2025 and August 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
SkyWest against every carrier on SLC to GEG
SkyWest flew 694 of the 1,668 flights on SLC to GEG, about 42% of it. Its 92.7% on time is 7 points better than the route as a whole, which runs 85.9%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 92.7% to Delta at 81.1%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 694 | 92.7% | 57 min | 0.14% | A+ |
| Delta Air Lines | 974 | 81.1% | 72 min | 0.62% | B+ |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 694 flights.
- 5am–8am—
- 8am–11am336 flights95.8%
- 11am–2pm26 flights—
- 2pm–5pm154 flights91.5%
- 5pm–8pm178 flights87.1%
- 8pm–5am—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 95.8% of the time, against 87.1% for the evening window. That is 9 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 336 flights scheduled in it.
Across the year
SkyWest on SLC to GEG through the year
Delays peak in March, when the on-time rate falls to 88.8%. January is the strongest month at 98.1%. Moving a flexible trip across that boundary buys 9 points. April was the busiest month here, with 102 flights.
Across the week, Wednesday is the strongest day at 97.1% on time and Sunday the weakest at 88.6%, a spread of 9 points.
Arrival by arrival
How late SkyWest on SLC to GEG runs when it is late
SkyWest on SLC to GEG often beats the schedule: 233 of 687 completed flights, 34%, arrived 15 minutes or more early. The 50 late arrivals split 17 under half an hour, 18 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early233 flights33.9%
- Within 15 min404 flights58.8%
- 15–29 min late17 flights2.5%
- 30–59 min late18 flights2.6%
- 1–2 hours late8 flights1.2%
- 2+ hours late7 flights1.0%
Scale runs 0% to 100%.
Share of 687 completed flights by arrival against schedule.
15 of 51 late departures made up the time and arrived on time, 29% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on SLC to GEG
The latest arrival of the period was on 18 February 2026, 3 hours 53 minutes behind schedule; most of its delay minutes were filed as extreme weather. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 February 2026 | 3 hours 53 minutes | Extreme weather |
| 12 October 2025 | 2 hours 52 minutes | Carrier |
| 24 March 2026 | 2 hours 20 minutes | Carrier |
| 8 March 2026 | 2 hours 14 minutes | Carrier |
| 7 September 2025 | 2 hours 11 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 77% of the 2,827 delay minutes carriers reported here, and the remaining four split what is left.
- 77%Carrier
- 19%Extreme weather
- 4%National Airspace System
Extreme weather accounts for 19% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.2 times the usual weather exposure. The split is drawn from 2,827 reported delay minutes.
The largest share of delay minutes, 77%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,169 of the 2,827 delay minutes reported here.
Cancellations are rare at 0.14%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 2.2% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 546 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg runs 94.1% on time across 694 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 694 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on SLC to GEG
Put together: treat all of this as provisional. 694 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 92.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 687 completed flights over 12 months sit behind that.
Related
Where to go next
- SLC to GEG, every carrier
- SkyWest on GEG to SLC, the return leg
- Delta Air Lines on SLC to GEG81.1%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.