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Route · PSP → SEA · 2020–2025 BTS data

Palm Springs to Seattle

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PSP to SEA (Palm Springs to Seattle) ranks #1226 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.8%
On-time
+7.8 pts
vs US avg
65 min
Delay when late
9,558
Flights
#1226 of 4927
Corpus placement

Cancelled

1.4%

Best Month

Sep 2025 94%

Worst Month

Aug 2024 74%

Distance

987 mi

Carriers

16

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 155 28 2 1 DL,AS,OO
Nov 2025 165 17 1 0 OO,AS,DL
Oct 2025 149 21 1 1 AS,OO
Sep 2025 90 5 1 0 OO,AS
Aug 2025 73 14 0 0 OO,AS
Jul 2025 62 10 2 0 AS,OO
Jun 2025 71 18 0 0 AS,OO
May 2025 128 28 0 0 AS,OO,DL
Apr 2025 197 23 0 0 DL,OO,AS
Mar 2025 197 31 0 0 AS,OO,DL
Feb 2025 168 31 2 0 AS,OO,DL
Jan 2025 183 19 0 1 AS,OO,DL
Dec 2024 155 25 0 0 AS,DL,OO
Nov 2024 167 25 1 1 OO,AS,DL
Oct 2024 151 19 0 0 AS,OO
Sep 2024 60 15 0 0 OO,AS
Aug 2024 62 16 1 1 AS,OO
Jul 2024 61 12 1 0 AS,OO
Jun 2024 72 13 0 0 AS,OO
May 2024 118 25 0 1 AS,DL,OO
Apr 2024 210 30 2 0 AS,DL,OO
Mar 2024 237 28 1 0 AS,DL,OO
Feb 2024 199 25 0 0 AS,DL,OO
Jan 2024 189 23 31 0 AS,DL,OO

PSP–SEA seasonal on-time pattern

Best: July (89.4%) · weakest: June (81.5%)

80%82%84%86%88%90% JanFebMarAprMayJunJulAugSepOctNovDec 84.7%

Strongest calendar month

July

89.4% on-time · ~71 flights/mo

Busiest calendar month

March

~213 flights/mo avg

Weakest calendar month

June

81.5% on-time · ~76 flights/mo

Cancellation Rate

1.4%

46 of 3,319 flights

Diversion Rate

0.2%

6 of 3,319 flights

Explore origin & destination

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

PSP - Palm Springs

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

PSP on-time profile

SEA - Seattle

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

SEA on-time profile

Compare the two airports

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

Compare PSP vs SEA

Origin-hub reliability standing

Among PSP's stronger departures

PSP → SEA posts a 86.8% on-time rate, landing in the ≥85% band with 6 of 16 BTS-tracked routes leaving Palm Springs. The same hub also shows 8 mid-band and 2 challenged departures · fleet-wide on-time rank #687 of 4927 (highest on-time = #1).

What the Data Says About PSP to SEA

Palm Springs to Seattle (PSP to SEA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.8% on-time rate across 9,558 flights, with delays that do happen averaging 65.0 minutes. The corridor runs roughly 987 miles and is served by 16 carriers. Over the most recent 24 months, 46 of 3,319 flights were cancelled (1.4%) and 6 diverted (0.2%).

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 94% on-time, while Aug 2024 came in at just 74% - a 20-point swing worth factoring into travel timing.

On the multi-year calendar, PSP–SEA peaks in July at 89.4% on-time while March carries the heaviest traffic (~213 flights per month) ; the softest month is June at 81.5%, a 7.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does PSP to SEA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, PSP to SEA ranks #1226 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 PSP to SEA? ▼
Flights from Palm Springs to Seattle have a 86.8% on-time rate based on 9,558 flights. The average delay is 65.0 minutes. The best recent month was Sep 2025 with 94% on-time.
What is the cancellation rate for PSP to SEA? ▼
Over the last 24 months, 1.4% of flights on this route were cancelled (46 of 3,319 flights) and 0.2% were diverted.
How far is the flight from PSP to SEA? ▼
The flight distance from Palm Springs (PSP) to Seattle (SEA) is approximately 987 miles. This route is served by 16 carriers.
When is the best time to fly from PSP to SEA? ▼
The best recent month for on-time performance was Sep 2025 (94% on-time). The worst was Aug 2024 (74% on-time). Consider booking during months with historically better performance.

Airports on this route

PSP Airport

Palm Springs
SEA Airport

Seattle
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 PSP–SEA data

PSP–SEA runs 7.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare PSP and SEA airport profiles: delay causes and top routes differ even on the same corridor. PSP airport
  • If your dates flex, July (89.4% on-time) beats June (81.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.8% 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.