STS to PSP flight delays
Santa Rosa, CA (STS) Palm Springs, CA (PSP) · 478 miles
142 flights · January 2025 – August 2026 · the publishing regulator
82.01%
Arrived on time
Within 15 minutes of schedule
2.11%
Cancelled
Share of scheduled flights
77 min
When late, late by
Average across delayed arrivals
15 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In January it ran 55 points more punctual than in December — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 77 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The route has been getting better. The later months in the record run 14 points more punctual than the earlier ones, which usually means a schedule that was too tight has been given more room.
The two directions do not behave alike. PSP to STS arrives on time 5 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on STS to PSP. Flights ran closest to schedule in January and worst in December.
Every airline on STS to PSP
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 142 | 82.01% | 2.11% | 77 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
PSP to STS Palm Springs back to Santa Rosa 76.98% on time CCommon questions
Are flights from Santa Rosa to Palm Springs usually delayed?
82.01% of flights on the STS to PSP route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Santa Rosa to Palm Springs?
Only SkyWest Airlines appears in the published record on this route, with 142 flights and 82.01% arriving on time.
How often are STS to PSP flights cancelled?
2.11% of scheduled flights did not operate — about 21 in every thousand. That is in the normal range.
What is the best month to fly Santa Rosa to Palm Springs?
January, when 100% of flights arrived on time. The worst was December at 45%.
When STS to PSP flights are late, how late are they?
About 77 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on STS to PSP during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →