Carrier route record

OODEN→GEG

SkyWest Airlines · Denver to Spokane

Flights: 258
Period: September 2025 to August 2026
Share of route: 13%
Carriers: 4

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

SkyWest on DEN 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 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 258 flights. The strongest carrier on the route with a full sample, United Airlines, flew 826 at 77.6% on time.

Set against the rest of the country, SkyWest's DEN to GEG record is 12 points better than the US average of 77.3%. That gap is worth roughly 121 fewer late arrivals for every thousand flights.

On time

89.4%

Arrivals under 15 minutes late, of 255 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

0.78%

National rate is 1.89%

Whole route

76.3%

Every carrier on DEN to GEG, 2,042 flights

These figures cover 258 flights between September 2025 and August 2026. The median arrival is 7 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 DEN to GEG

SkyWest flew 258 of the 2,042 flights on DEN to GEG, about 13% of it. Its 89.4% on time is 13 points better than the route as a whole, which runs 76.3%. Ranked by on-time rate it is first of four carriers on the route, where the range runs from SkyWest at 89.4% to Southwest at 69.8%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. United Airlines arrives on time 77.6% of the time; Southwest Airlines manages 69.8%. Sample sizes sit next to every figure, because a two-point gap across 859 flights means less than a ten-point one.

On-time performance by carrier on DEN to GEG
Airline	Flights	On time	Avg delay	Cancelled	Grade
SkyWest Airlines (this page)thin sample	258	89.4%	50 min	0.78%	A+
Frontier Airlinesthin sample	99	88.9%	32 min	0.00%	A+
United Airlines	826	77.6%	63 min	0.24%	B+
Southwest Airlines	859	69.8%	47 min	0.47%	C+

United leads Southwest by 8 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

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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 258 flights.

There are not enough flights in each departure window to split SkyWest's DEN to GEG record by time of day without the percentages moving on noise. The headline rate of 89.4% is the reliable figure here.

Across the year

SkyWest on DEN to GEG through the year

Jul–Sep 202530 flights100.0%
Oct–Dec 202591 flights88.9%
Jan–Mar 202666 flights79.7%
Apr–Jun 202650 flights98.0%
Jul–Sep 202621 flights—

Scale runs 70% to 100%. 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 89.4% on time across 258 flights.

SkyWest on DEN to GEG did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jan–Mar 2026 at 79.7%, a swing of 20 points on roughly 65 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, Tuesday is the strongest day at 91.9% on time and Saturday the weakest at 83.3%, a spread of 9 points.

Arrival by arrival

How late SkyWest on DEN to GEG runs when it is late

SkyWest on DEN to GEG often beats the schedule: 76 of 255 completed flights, 30%, arrived 15 minutes or more early. The 27 late arrivals split 10 under half an hour, 7 between 30 and 60 minutes, and 10 an hour or more.

15+ min early76 flights29.8%
Within 15 min152 flights59.6%
15–29 min late10 flights3.9%
30–59 min late7 flights2.7%
1–2 hours late8 flights3.1%
2+ hours late2 flights0.8%

Scale runs 0% to 100%.

Share of 255 completed flights by arrival against schedule.

3 of 22 late departures made up the time and arrived on time, 14% of them. 8 flights left on time and still arrived late.

The worst days

Worst days for SkyWest on DEN to GEG

The latest arrival of the period was on 19 January 2026, 2 hours 11 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.

The latest arrivals of SkyWest on DEN to GEG in the period
Date	Arrived late by	Largest filed cause
19 January 2026	2 hours 11 minutes	Late-arriving aircraft
25 February 2026	2 hours 6 minutes	Late-arriving aircraft
12 August 2026	1 hour 42 minutes	Security
18 December 2025	1 hour 32 minutes	Late-arriving aircraft
24 February 2026	1 hour 30 minutes	Late-arriving aircraft

Delay causes

Why SkyWest runs late on this route

Late-arriving aircraft accounts for 49% of the 1,345 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
49%
Carrier
26%
National Airspace System
16%
Security
8%
Extreme weather
2%

49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,345 reported delay minutes here, that single category outweighs weather by 24 to one. The split is drawn from 1,345 reported delay minutes.

Cancellations are rare at 0.78%, 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 3.9% 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 836 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 is a different operation and performs like one: it runs 86.3% on time across 258 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. 258 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 DEN to GEG

Put together: treat all of this as provisional. 258 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 89.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 255 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures