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Route · SEA → PSP · 2020–2025 BTS data

Seattle to Palm Springs

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SEA to PSP (Seattle to Palm Springs) ranks #1225 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

85.4%
On-time
+6.4 pts
vs US avg
56 min
Delay when late
9,562
Flights
#1225 of 4927
Corpus placement

Cancelled

0.9%

Best Month

Nov 2024 91%

Worst Month

Aug 2024 63%

Distance

987 mi

Carriers

16

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 155 36 1 0 DL,AS,OO
Nov 2025 166 31 1 0 OO,AS,DL
Oct 2025 150 24 1 0 AS,OO
Sep 2025 90 10 0 0 OO,AS
Aug 2025 74 10 0 0 OO,AS
Jul 2025 62 8 1 0 AS,OO
Jun 2025 71 15 0 0 AS,OO
May 2025 127 29 0 0 AS,OO,DL
Apr 2025 197 20 0 0 DL,OO,AS
Mar 2025 198 35 0 1 AS,OO,DL
Feb 2025 168 32 1 1 AS,OO,DL
Jan 2025 183 17 0 1 AS,OO,DL
Dec 2024 155 22 0 0 AS,DL,OO
Nov 2024 167 15 2 0 OO,AS,DL
Oct 2024 151 31 0 0 AS,OO
Sep 2024 60 15 0 0 OO,AS
Aug 2024 62 23 0 0 AS,OO
Jul 2024 61 9 0 0 AS,OO
Jun 2024 72 13 0 0 AS,OO
May 2024 118 17 0 1 AS,DL,OO
Apr 2024 212 36 1 0 AS,DL,OO
Mar 2024 237 39 0 3 AS,DL,OO
Feb 2024 200 36 0 0 AS,DL,OO
Jan 2024 189 30 23 0 AS,DL,OO

SEA–PSP seasonal on-time pattern

Best: July (90.4%) · weakest: August (82.2%)

80%82%84%86%88%90%92% JanFebMarAprMayJunJulAugSepOctNovDec 82.4%

Strongest calendar month

July

90.4% on-time · ~71 flights/mo

Busiest calendar month

March

~213 flights/mo avg

Weakest calendar month

August

82.2% on-time · ~76 flights/mo

Cancellation Rate

0.9%

31 of 3,325 flights

Diversion Rate

0.2%

7 of 3,325 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

SEA - Seattle

Full on-time, delay-cause, and seasonal performance for Seattle, WA.

SEA on-time profile

PSP - Palm Springs

Full on-time, delay-cause, and seasonal performance for Palm Springs, CA.

PSP on-time profile

Compare the two airports

See SEA and PSP side by side on delays, cancellations, and reliability.

Compare SEA vs PSP

Origin-hub reliability standing

Among SEA's stronger departures

SEA → PSP posts a 85.4% on-time rate, landing in the ≥85% band with 25 of 89 BTS-tracked routes leaving Seattle. The same hub also shows 63 mid-band and 1 challenged departures · fleet-wide on-time rank #1099 of 4927 (highest on-time = #1).

What the Data Says About SEA to PSP

Seattle to Palm Springs (SEA to PSP) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.4% on-time rate across 9,562 flights, with delays that do happen averaging 55.9 minutes. The corridor runs roughly 987 miles and is served by 16 carriers. Over the most recent 24 months, 31 of 3,325 flights were cancelled (0.9%) and 7 diverted (0.2%).

The monthly split is wide on this route: Nov 2024 posted the strongest performance at 91% on-time, while Aug 2024 came in at just 63% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, SEA–PSP peaks in July at 90.4% on-time while March carries the heaviest traffic (~213 flights per month) ; the softest month is August at 82.2%, a 8.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SEA to PSP rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SEA to PSP ranks #1225 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from SEA to PSP? ▼
Flights from Seattle to Palm Springs have a 85.4% on-time rate based on 9,562 flights. The average delay is 55.9 minutes. The best recent month was Nov 2024 with 91% on-time.
What is the cancellation rate for SEA to PSP? ▼
Over the last 24 months, 0.9% of flights on this route were cancelled (31 of 3,325 flights) and 0.2% were diverted.
How far is the flight from SEA to PSP? ▼
The flight distance from Seattle (SEA) to Palm Springs (PSP) is approximately 987 miles. This route is served by 16 carriers.
When is the best time to fly from SEA to PSP? ▼
The best recent month for on-time performance was Nov 2024 (91% on-time). The worst was Aug 2024 (63% on-time). Consider booking during months with historically better performance.

Airports on this route

SEA Airport

Seattle
PSP Airport

Palm Springs
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using SEA–PSP data

SEA–PSP runs 6.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SEA and PSP airport profiles: delay causes and top routes differ even on the same corridor. SEA airport
  • If your dates flex, July (90.4% on-time) beats August (82.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 85.4% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.