Carrier route record

OOGEG→ORD

SkyWest Airlines · Spokane to Chicago

Flights: 391
Period: July 2025 to June 2026
Share of route: 53%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.

SkyWest on GEG to ORD sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 391 flights, with a median arrival 4 minutes late.

The national on-time rate over the same period is 77.6%, so SkyWest on GEG to ORD runs 9 points behind the country as a whole. Across a thousand flights that is about 90 extra late arrivals.

On time

68.6%

Arrivals under 15 minutes late, of 379 completed flights

Avg delay

55 min

Across delayed arrivals only, not all flights

Cancelled

1.53%

National rate is 1.81%

Whole route

64.2%

Every carrier on GEG to ORD, 744 flights

These figures cover 391 flights between July 2025 and June 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

Carrier by carrier

SkyWest against every carrier on GEG to ORD

SkyWest flew 391 of the 744 flights on GEG to ORD, most of the route. Its 68.6% on time is 4 points better than the route as a whole, which runs 64.2%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from United at 100.0% to American at 59.2%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

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.

On-time performance by carrier on GEG to ORD
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlinesthin sample	2	100.0%	—	0.00%	A+
SkyWest Airlines (this page)	391	68.6%	55 min	1.53%	C
American Airlinesthin sample	351	59.2%	100 min	0.57%	D+

Departure window

When SkyWest runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am145 flights78.3%
8am–11am—
11am–2pm231 flights62.8%
2pm–5pm—
5pm–8pm—
8pm–5am15 flights—

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 62.8% on time against 78.3% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 231 flights scheduled in it.

Across the year

SkyWest on GEG to ORD through the year

Jul–Sep 2025140 flights63.2%
Oct–Dec 202572 flights64.8%
Jan–Mar 202688 flights76.5%
Apr–Jun 202691 flights72.4%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 68.6% on time across 391 flights.

SkyWest on GEG to ORD did not run the same all year. Its best quarter was Jan–Mar 2026 at 76.5% on time and its weakest Jul–Sep 2025 at 63.2%, a swing of 13 points on roughly 98 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Thursday is the strongest day at 76.5% on time and Friday the weakest at 52.7%. 24 points is a smaller lever than departure hour, but it is free.

Delay causes

Why SkyWest runs late on this route

One category carries most of the weight here. Carrier accounts for 51% of the 6,543 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
51%
Extreme weather
21%
National Airspace System
17%
Late-arriving aircraft
11%
Security
0%

Extreme weather accounts for 21% 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 3.4 times the usual weather exposure. The split is drawn from 6,543 reported delay minutes.

The largest share of delay minutes, 51%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,363 of the 6,543 delay minutes reported here.

Cancellations sit at 1.53% against a national 1.81%, which is ordinary. Diversions add another 1.53%.

Connections and stage length

What a delay here costs

6.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The 1,498 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg is a different operation and performs like one: it runs 65.4% on time across 390 flights, 3 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 3 points of difference.

One caution: this is a thin sample. 391 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 GEG to ORD

Put together: treat all of this as provisional. 391 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 68.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 379 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures