Route reliability record
SLC→PSC
Salt Lake City to Pasco
- Flights
- 1,177
- Period
- September 2025 to August 2026
- Distance
- 521 mi
- Carriers
- 2
This route 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 a little over an hour. That rests on 1,177 SLC to PSC flights, with a median arrival 9 minutes early.
Best time to fly SLC to PSC: a 8am–11am departure, ideally on a Tuesday. Flights in that window arrived on time 95.3% of the time and Tuesday flights 93.6%, against 89.3% for the route overall.
Set against the rest of the country, this route's record is 12 points better than the US average of 77.3%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.
Key figures
On time
89.3%
Arrivals under 15 minutes late, of 1,171 completed flights
Avg delay
68 min
Across delayed arrivals only, not all flights
Cancelled
0.17%
National rate is 1.89%
Best carrier
SkyWest
90.6% on time across 829 flights
These figures cover 1,177 flights between September 2025 and August 2026. The median arrival is 9 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
Which airline is most reliable on SLC 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 | 829 | 90.6% | 60 min | 0.12% | A+ |
| Delta Air Linesthin sample | 348 | 86.3% | 82 min | 0.29% | A+ |
Flight by flight
Flights on SLC 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 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 1,177 flights.
- 5am–8am—
- 8am–11am169 flights95.3%
- 11am–2pm305 flights91.1%
- 2pm–5pm338 flights87.9%
- 5pm–8pm1 flights—
- 8pm–5am364 flights86.4%
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 95.3% of the time, against 86.4% for the overnight 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 8pm–5am window is the busiest, with 364 flights scheduled in it.
Explore
Filter SLC 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 SLC to PSC, the best departure window is 8am–11am at 95.3% on time and the worst is 8pm–5am at 86.4%, a real gap of 8.9 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am—
- 8–11am95.3%
- 11am–2pm91.1%
- 2–5pm87.9%
- 5–8pm—
- 8pm–5am86.4%
best all US flightsScale 60% to 100%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
Twelve months, one bar each, drawn from the same 1,177 flights. The strip shows how much of this route's record is set by the calendar rather than by the operation.
February is the weak month at 82.9% on time, against 94.6% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. July was the busiest month here, with 120 flights.
Across the week, Tuesday is the strongest day at 93.6% on time and Wednesday the weakest at 87.0%, a spread of 7 points.
Delay causes
Why this route gets delayed
Carrier accounts for 51% of the 8,544 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Carrier
- 30%Extreme weather
- 13%Late-arriving aircraft
- 6%National Airspace System
Extreme weather accounts for 30% 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 5.1 times the usual weather exposure. The split is drawn from 8,544 reported delay minutes.
The largest share of delay minutes, 51%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,351 of the 8,544 delay minutes reported here.
Cancellations are rare at 0.17%, 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
Badly late arrivals are rare here: only 3.7% 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 521 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 93.5% on time across 1,177 flights, 4 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 4 points of difference.
The sample behind these figures is 1,177 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in PSC after this flight
What to do with this
Booking this route
Put together: take the 8am–11am departure, avoid February if the dates are flexible, and if two carriers are within a few dollars of each other, SkyWest is the one with the record behind it. None of that guarantees an on-time arrival; it moves the odds by 9 points, which is the most any booking decision can do. 1,171 completed flights over 12 months sit behind that.
Common questions
SLC to PSC questions
How often is SLC to PSC delayed?
About one flight in nine arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 10.7% of the 1,177 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
How reliable is SLC to PSC compared with the rest of the country?
89.3% of flights arrive on time here against a national 77.3%, a difference of 12 points in its favour. That is worth a A+ on this site's grading scale.
What time of day has the fewest delays on SLC to PSC?
The 8am–11am departure window is the strongest at 95.3% on time. The 8pm–5am window is the weakest at 86.4%, 9 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 February delays on SLC to PSC?
February is the weakest month at 82.9% on time, compared with 94.6% in September. Across the year that is 12 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 SLC — the return legseparate record
- Salt Lake City International (SLC) delay statistics
- SkyWest Airlines on SLC to PSC90.6%
- Delta Air Lines on SLC to PSC86.3%
- SLC to DEN, a related route79.0%
- SEA to PSC, a related route83.3%
- SLC to PHX, a related route83.5%
- SkyWest Airlines on-time record90.6%
- Delta Air Lines on-time record86.3%
- The most punctual routes in the US, and the least
- The best time of day to fly, according to 7.05 million flight records
Direction matters. SLC to PSC and PSC to SLC 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.