Route reliability record
LAS→PSP
Las Vegas to Palm Springs
- Flights
- 741
- Period
- September 2025 to August 2026
- Distance
- 173 mi
- Carriers
- 1
This route sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land roughly 50 minutes behind schedule. That rests on 741 LAS to PSP flights, with a median arrival right on schedule.
Best time to fly LAS to PSP: a 11am–2pm departure, ideally on a Saturday. Flights in that window arrived on time 82.8% of the time and Saturday flights 81.3%, against 72.2% for the route overall.
The national on-time rate over the same period is 77.3%, so this route runs 5 points behind the country as a whole. Across a thousand flights that is about 51 extra late arrivals.
Key figures
On time
72.2%
Arrivals under 15 minutes late, of 734 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
0.94%
National rate is 1.89%
Best carrier
Southwest
72.2% on time across 741 flights
These figures cover 741 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
Which airline is most reliable on LAS to PSP
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 | 741 | 72.2% | 49 min | 0.94% | C+ |
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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 21 points, against half a point between the best and worst carrier.
- 5am–8am1 flights—
- 8am–11am98 flights78.1%
- 11am–2pm157 flights82.8%
- 2pm–5pm126 flights61.9%
- 5pm–8pm108 flights73.8%
- 8pm–5am251 flights67.6%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 82.8% on time, ahead of 2pm–5pm at 61.9%. 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 8pm–5am window is the busiest, with 251 flights scheduled in it.
Explore
Filter LAS to PSP 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 LAS to PSP, the best departure window is 11am–2pm at 82.8% on time and the worst is 2pm–5pm at 61.9%, a wide gap of 20.9 points. All US flights leaving 11am–2pm ran 78.3%.
- 5–8am—
- 8–11am78.1%
- 11am–2pm82.8%
- 2–5pm61.9%
- 5–8pm73.8%
- 8pm–5am67.6%
best all US flightsScale 55% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 24 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.
August is the worst month at 61.8% on time, 24 points below January, the best at 85.5%. 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. May was the busiest month here, with 79 flights.
Across the week, Saturday is the strongest day at 81.3% on time and Friday the weakest at 63.0%, a spread of 18 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 59% of the 9,966 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Late-arriving aircraft
- 31%Carrier
- 9%National Airspace System
- 2%Extreme weather
59% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,966 reported delay minutes here, that single category outweighs weather by 33 to one. The split is drawn from 9,966 reported delay minutes.
Cancellations sit at 0.94% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here actually costs
7.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 50 minutes, which a normal layover absorbs.
At 173 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 11am–2pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 79.7% on time across 739 flights, 8 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 8 points of difference.
One caution: this is a thin sample. 741 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 PSP after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 741 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 72.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 734 completed flights over 12 months sit behind that.
Common questions
LAS to PSP questions
How often is LAS to PSP delayed?
Roughly 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 27.8% of the 741 flights in this analysis, against 22.7% nationally. Delayed flights are late by roughly 50 minutes on average.
How reliable is LAS to PSP compared with the rest of the country?
72.2% of flights arrive on time here against a national 77.3%, a difference of 5 points against it. That is worth a C+ on this site's grading scale.
What time of day has the fewest delays on LAS to PSP?
The 11am–2pm departure window is the strongest at 82.8% on time. The 2pm–5pm window is the weakest at 61.9%, 21 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 August delays on LAS to PSP?
August is the weakest month at 61.8% on time, compared with 85.5% in January. Across the year that is 24 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
- PSP to LAS — the return legseparate record
- Harry Reid International (LAS) delay statistics
- LAS to LAX, a related route77.9%
- SFO to PSP, a related route73.9%
- LAS to DEN, a related route76.5%
- Southwest Airlines on-time record72.2%
- 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. LAS to PSP and PSP to LAS 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.