PlainFlights

Route · SAN → PDX · 2020–2025 BTS data

San Diego to Portland

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SAN to PDX (San Diego to Portland) ranks #1305 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

85%
On-time
+6 pts
vs US avg
59 min
Delay when late
9,183
Flights
#1305 of 4927
Corpus placement

Cancelled

2.0%

Best Month

Feb 2025 91%

Worst Month

Dec 2024 73%

Distance

933 mi

Carriers

16

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 156 28 1 0 WN,AS
Nov 2025 145 28 0 0 AS,WN
Oct 2025 145 19 2 0 AS,WN
Sep 2025 130 16 1 0 AS
Aug 2025 148 27 3 0 WN,AS
Jul 2025 157 28 3 0 AS,WN
Jun 2025 164 33 0 0 AS,OO,WN
May 2025 158 21 0 0 AS,OO
Apr 2025 135 13 1 0 AS
Mar 2025 126 12 2 0 AS
Feb 2025 100 9 3 0 AS
Jan 2025 118 18 2 0 AS,WN
Dec 2024 161 44 4 0 AS,OO,WN
Nov 2024 156 27 2 0 WN,AS
Oct 2024 150 30 4 0 AS,NK,OO,WN
Sep 2024 166 26 1 0 WN,AS,NK
Aug 2024 183 38 1 0 AS,NK,WN,OO
Jul 2024 171 33 2 0 AS,NK,OO,WN
Jun 2024 164 34 1 0 AS,NK,OO,WN
May 2024 114 20 0 0 AS,OO,WN
Apr 2024 112 30 1 0 AS,OO,WN
Mar 2024 117 25 0 0 AS,OO,WN
Feb 2024 114 11 1 0 AS,OO,WN
Jan 2024 135 20 34 0 AS,WN,OO

SAN–PDX seasonal on-time pattern

Best: September (88.9%) · weakest: December (79.4%)

75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 79.4%

Strongest calendar month

September

88.9% on-time · ~131 flights/mo

Busiest calendar month

June

~153 flights/mo avg

Weakest calendar month

December

79.4% on-time · ~131 flights/mo

Cancellation Rate

2.0%

69 of 3,425 flights

Diversion Rate

0.0%

0 of 3,425 flights

Explore origin & destination

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

SAN - San Diego

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

SAN on-time profile

PDX - Portland

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

PDX on-time profile

Compare the two airports

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

Compare SAN vs PDX

Origin-hub reliability standing

Among SAN's stronger departures

SAN → PDX posts a 85% on-time rate, landing in the ≥85% band with 13 of 51 BTS-tracked routes leaving San Diego. The same hub also shows 34 mid-band and 4 challenged departures · fleet-wide on-time rank #1231 of 4927 (highest on-time = #1).

What the Data Says About SAN to PDX

San Diego to Portland (SAN to PDX) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85% on-time rate across 9,183 flights, with delays that do happen averaging 59.1 minutes. The corridor runs roughly 933 miles and is served by 16 carriers. Over the most recent 24 months, 69 of 3,425 flights were cancelled (2.0%) and 0 diverted (0.0%).

The monthly split is wide on this route: Feb 2025 posted the strongest performance at 91% on-time, while Dec 2024 came in at just 73% - a 18-point swing worth factoring into travel timing.

On the multi-year calendar, SAN–PDX peaks in September at 88.9% on-time while June carries the heaviest traffic (~153 flights per month) ; the softest month is December at 79.4%, a 9.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SAN to PDX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SAN to PDX ranks #1305 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 SAN to PDX? ▼
Flights from San Diego to Portland have a 85% on-time rate based on 9,183 flights. The average delay is 59.1 minutes. The best recent month was Feb 2025 with 91% on-time.
What is the cancellation rate for SAN to PDX? ▼
Over the last 24 months, 2.0% of flights on this route were cancelled (69 of 3,425 flights) and 0.0% were diverted.
How far is the flight from SAN to PDX? ▼
The flight distance from San Diego (SAN) to Portland (PDX) is approximately 933 miles. This route is served by 16 carriers.
When is the best time to fly from SAN to PDX? ▼
The best recent month for on-time performance was Feb 2025 (91% on-time). The worst was Dec 2024 (73% on-time). Consider booking during months with historically better performance.

Airports on this route

SAN Airport

San Diego
PDX Airport

Portland
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 SAN–PDX data

SAN–PDX runs 6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SAN and PDX airport profiles: delay causes and top routes differ even on the same corridor. SAN airport
  • If your dates flex, September (88.9% on-time) beats December (79.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 85% 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.