PlainFlights

Route · PDX → SJC · 2020–2025 BTS data

Portland to San Jose

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PDX to SJC (Portland to San Jose) ranks #780 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.2%
On-time
+7.2 pts
vs US avg
59 min
Delay when late
13,184
Flights
#780 of 4927
Corpus placement

Cancelled

0.5%

Best Month

Mar 2024 92%

Worst Month

Jun 2025 72%

Distance

569 mi

Carriers

23

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 184 35 0 0 WN,AS,OO
Nov 2025 116 20 1 0 OO,AS,WN
Oct 2025 158 33 0 1 OO,WN
Sep 2025 150 31 1 0 WN,OO
Aug 2025 143 27 0 0 OO,WN
Jul 2025 136 32 0 0 OO,WN
Jun 2025 132 37 0 0 OO,WN
May 2025 120 18 1 0 OO,WN
Apr 2025 139 16 0 0 OO,WN
Mar 2025 151 16 0 0 AS,OO,WN
Feb 2025 121 16 0 0 AS,OO,WN
Jan 2025 137 19 3 0 OO,WN
Dec 2024 196 20 1 0 OO,WN
Nov 2024 210 25 1 0 OO,WN,AS
Oct 2024 265 31 1 0 AS,OO,WN,NK
Sep 2024 245 35 1 0 WN,NK,OO
Aug 2024 236 41 0 0 NK,WN,OO
Jul 2024 199 41 2 0 NK,OO,WN
Jun 2024 216 40 0 0 NK,OO,WN
May 2024 189 26 0 0 OO,WN
Apr 2024 188 29 0 0 OO,WN
Mar 2024 179 15 0 0 OO,WN
Feb 2024 172 19 0 0 AS,OO,WN
Jan 2024 194 47 7 0 AS,WN,OO

PDX–SJC seasonal on-time pattern

Best: March (90.0%) · weakest: July (80.3%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 84.1%

Strongest calendar month

March

90.0% on-time · ~178 flights/mo

Busiest calendar month

October

~205 flights/mo avg

Weakest calendar month

July

80.3% on-time · ~187 flights/mo

Cancellation Rate

0.5%

19 of 4,176 flights

Diversion Rate

0.0%

1 of 4,176 flights

Explore origin & destination

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

PDX - Portland

Full on-time, delay-cause, and seasonal performance for Portland, OR.

PDX on-time profile

SJC - San Jose

Full on-time, delay-cause, and seasonal performance for San Jose, CA.

SJC on-time profile

Compare the two airports

See PDX and SJC side by side on delays, cancellations, and reliability.

Compare PDX vs SJC

Origin-hub reliability standing

Among PDX's stronger departures

PDX → SJC posts a 86.2% on-time rate, landing in the ≥85% band with 26 of 44 BTS-tracked routes leaving Portland. The same hub also shows 17 mid-band and 1 challenged departures · fleet-wide on-time rank #855 of 4927 (highest on-time = #1).

What the Data Says About PDX to SJC

Portland to San Jose (PDX to SJC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.2% on-time rate across 13,184 flights, with delays that do happen averaging 58.9 minutes. The corridor runs roughly 569 miles and is served by 23 carriers. Over the most recent 24 months, 19 of 4,176 flights were cancelled (0.5%) and 1 diverted (0.0%).

The monthly split is wide on this route: Mar 2024 posted the strongest performance at 92% on-time, while Jun 2025 came in at just 72% - a 20-point swing worth factoring into travel timing.

On the multi-year calendar, PDX–SJC peaks in March at 90.0% on-time while October carries the heaviest traffic (~205 flights per month) ; the softest month is July at 80.3%, a 9.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does PDX to SJC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, PDX to SJC ranks #780 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 PDX to SJC? ▼
Flights from Portland to San Jose have a 86.2% on-time rate based on 13,184 flights. The average delay is 58.9 minutes. The best recent month was Mar 2024 with 92% on-time.
What is the cancellation rate for PDX to SJC? ▼
Over the last 24 months, 0.5% of flights on this route were cancelled (19 of 4,176 flights) and 0.0% were diverted.
How far is the flight from PDX to SJC? ▼
The flight distance from Portland (PDX) to San Jose (SJC) is approximately 569 miles. This route is served by 23 carriers.
When is the best time to fly from PDX to SJC? ▼
The best recent month for on-time performance was Mar 2024 (92% on-time). The worst was Jun 2025 (72% on-time). Consider booking during months with historically better performance.

Airports on this route

PDX Airport

Portland
SJC Airport

San Jose
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 PDX–SJC data

PDX–SJC runs 7.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare PDX and SJC airport profiles: delay causes and top routes differ even on the same corridor. PDX airport
  • If your dates flex, March (90.0% on-time) beats July (80.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.2% 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.