Route reliability record
PSP→SLC
Palm Springs to Salt Lake City
- Flights
- 1,080
- Period
- September 2025 to August 2026
- Distance
- 541 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 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 1,080 PSP to SLC flights, with a median arrival 15 minutes early.
Best time to fly PSP to SLC: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 98.4% of the time and Tuesday flights 96.8%, against 92.3% for the route overall.
Set against the rest of the country, this route's record is 15 points better than the US average of 77.3%. That gap is worth roughly 150 fewer late arrivals for every thousand flights.
Key figures
On time
92.3%
Arrivals under 15 minutes late, of 1,075 completed flights
Avg delay
113 min
Across delayed arrivals only, not all flights
Cancelled
0.37%
National rate is 1.89%
Best carrier
SkyWest
93.2% on time across 1,009 flights
These figures cover 1,080 flights between September 2025 and August 2026. The median arrival is 15 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 PSP to SLC
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 | 1,009 | 93.2% | 107 min | 0.40% | A+ |
| Delta Air Linesthin sample | 71 | 78.9% | 142 min | 0.00% | B+ |
Flight by flight
Flights on PSP to SLC
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–8am365 flights98.4%
- 8am–11am—
- 11am–2pm355 flights90.3%
- 2pm–5pm9 flights—
- 5pm–8pm351 flights88.0%
- 8pm–5am—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 98.4% of the time, against 88.0% for the evening window. That is 10 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 365 flights scheduled in it.
Explore
Filter PSP to SLC 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 PSP to SLC, the best departure window is 5am–8am at 98.4% on time and the worst is 5pm–8pm at 88.0%, a wide gap of 10.4 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am98.4%
- 8–11am—
- 11am–2pm90.3%
- 2–5pm—
- 5–8pm88.0%
- 8pm–5am—
best all US flightsScale 60% to 100%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 21 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.
February is the weak month at 78.6% on time, against 100.0% in June. 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. March was the busiest month here, with 93 flights.
Across the week, Tuesday is the strongest day at 96.8% on time and Saturday the weakest at 88.8%, a spread of 8 points.
Delay causes
Why this route gets delayed
Carrier accounts for 80% of the 9,405 delay minutes carriers reported here, and the remaining four split what is left.
- 80%Carrier
- 10%Extreme weather
- 5%Late-arriving aircraft
- 5%National Airspace System
The largest share of delay minutes, 80%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 7,516 of the 9,405 delay minutes reported here. The split is drawn from 9,405 reported delay minutes.
Cancellations are rare at 0.37%, 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 3.2% 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 541 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 runs 91.8% on time across 1,080 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 1,080 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 SLC after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 1,080 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 92.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,075 completed flights over 12 months sit behind that.
Common questions
PSP to SLC questions
How often is PSP to SLC delayed?
Roughly one flight in twelve arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 7.7% of the 1,080 flights in this analysis, against 22.7% nationally. Delayed flights are late by close to two hours on average.
How reliable is PSP to SLC compared with the rest of the country?
92.3% of flights arrive on time here against a national 77.3%, a difference of 15 points in its favour. That is worth a A+ on this site's grading scale.
What time of day has the fewest delays on PSP to SLC?
The 5am–8am departure window is the strongest at 98.4% on time. The 5pm–8pm window is the weakest at 88.0%, 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 February delays on PSP to SLC?
February is the weakest month at 78.6% on time, compared with 100.0% in June. Across the year that is 21 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
- SLC to PSP — the return legseparate record
- Salt Lake City International (SLC) delay statistics
- PSP to SFO, a related route61.1%
- DEN to SLC, a related route78.2%
- PSP to DEN, a related route82.5%
- SkyWest Airlines on-time record93.2%
- Delta Air Lines on-time record78.9%
- 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. PSP to SLC and SLC to PSP 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.