Route reliability record
DEN→PSC
Denver to Pasco
- Flights
- 729
- Period
- September 2025 to August 2026
- Distance
- 853 mi
- Carriers
- 2
This route lands a B+, about a point worse than the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 729 DEN to PSC flights, with a median arrival 4 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.0%
Arrivals under 15 minutes late, of 725 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
Best carrier
SkyWest
81.0% on time across 366 flights
These figures cover 729 flights between September 2025 and August 2026. Beyond the headline rate, 10.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on DEN to PSC
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 | 366 | 81.0% | 66 min | 0.27% | B+ |
| United Airlinesthin sample | 363 | 70.9% | 77 min | 0.28% | C+ |
Flight by flight
Flights on DEN to PSC
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 10 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am—
- 11am–2pm365 flights81.3%
- 2pm–5pm—
- 5pm–8pm363 flights70.9%
- 8pm–5am1 flights—
Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 81.3% on time, ahead of 5pm–8pm at 70.9%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 11am–2pm window is the busiest, with 365 flights scheduled in it.
Explore
Filter DEN to PSC by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On DEN to PSC, the best departure window is 11am–2pm at 81.3% on time and the worst is 5pm–8pm at 70.9%, a wide gap of 10.4 points. All US flights leaving 11am–2pm ran 78.3%.
- 5–8am—
- 8–11am—
- 11am–2pm81.3%
- 2–5pm—
- 5–8pm70.9%
- 8pm–5am—
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 42 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
June is the worst month at 50.0% on time, 42 points below November, the best at 91.5%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. December was the busiest month here, with 63 flights.
Across the week, Sunday is the strongest day at 81.7% on time and Friday the weakest at 70.9%, a spread of 11 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 56% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Late-arriving aircraft
- 31%Carrier
- 8%National Airspace System
- 5%Extreme weather
56% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 13,000 reported delay minutes here, that single category outweighs weather by 12 to one. The split is drawn from 12,671 reported delay minutes.
Cancellations are rare at 0.27%, 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 actually costs
10.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 853 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 89.1% on time across 728 flights, 13 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 13 points of difference.
One caution: this is a thin sample. 729 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.
Work out the risk of missing a connection in PSC after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 729 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 76.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 725 completed flights over 12 months sit behind that.
Common questions
DEN to PSC questions
How often is DEN to PSC delayed?
About one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 24.0% of the 729 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
How reliable is DEN to PSC compared with the rest of the country?
76.0% of flights arrive on time here against a national 77.3%, a difference of about a point against it. That is worth a B+ on this site's grading scale.
What time of day has the fewest delays on DEN to PSC?
The 11am–2pm departure window is the strongest at 81.3% on time. The 5pm–8pm window is the weakest at 70.9%, 10 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are June delays on DEN to PSC?
June is the weakest month at 50.0% on time, compared with 91.5% in November. Across the year that is 42 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- PSC to DEN — the return legseparate record
- Denver International (DEN) delay statistics
- SkyWest Airlines on DEN to PSC81.0%
- United Airlines on DEN to PSC70.9%
- DEN to PHX, a related route75.6%
- SEA to PSC, a related route83.3%
- DEN to SLC, a related route78.2%
- SkyWest Airlines on-time record81.0%
- United Airlines on-time record70.9%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Direction matters. DEN to PSC and PSC to DEN are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.