Carrier route record
G4GEG→LAS
Allegiant Air · Spokane to Las Vegas
- Flights
- 105
- Period
- July 2025 to June 2026
- Share of route
- 12%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Allegiant Air.
Allegiant on GEG to LAS draws a D+. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 105 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.6%, so Allegiant on GEG to LAS runs 17 points behind the country as a whole. Across a thousand flights that is about 170 extra late arrivals.
Key figures
On time
60.6%
Arrivals under 15 minutes late, of 104 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.95%
National rate is 1.81%
Whole route
83.3%
Every carrier on GEG to LAS, 855 flights
These figures cover 105 flights between July 2025 and June 2026. Beyond the headline rate, 23.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
Allegiant against every carrier on GEG to LAS
Allegiant flew 105 of the 855 flights on GEG to LAS, about 12% of it. Its 60.6% on time is 23 points worse than the route as a whole, which runs 83.3%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Southwest at 86.5% to Allegiant at 60.6%.
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 750 | 86.5% | 47 min | 0.13% | A+ |
| Allegiant Air (this page)thin sample | 105 | 60.6% | 77 min | 0.95% | D+ |
Departure window
When Allegiant 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 105 flights.
There are not enough flights in each departure window to split Allegiant's GEG to LAS record by time of day without the percentages moving on noise. The headline rate of 60.6% is the reliable figure here.
Across the year
Allegiant on GEG to LAS through the year
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 60.6% on time across 105 flights.
Split by quarter, Allegiant on GEG to LAS logged 26 flights in Jul–Sep 2025, 28 flights in Oct–Dec 2025, 25 flights in Jan–Mar 2026 and 26 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 60.6% annual figure is the one to use.
Across the week, Thursday is the strongest day at 64.6% on time and Sunday the weakest at 57.1%. 7 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Allegiant runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 46% of the 3,151 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.
- 46%Late-arriving aircraft
- 24%Carrier
- 23%National Airspace System
- 7%Extreme weather
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,151 reported delay minutes here, that single category outweighs weather by 6 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,151 reported delay minutes.
Cancellations sit at 0.95% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 23.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 806 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 72.1% on time across 105 flights, 11 points above 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 11 points of difference.
One caution: this is a thin sample. 105 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 Allegiant on GEG to LAS
Put together: treat all of this as provisional. 105 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 60.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 104 completed flights over 12 months sit behind that.
Related
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.