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Route Reliability

San Diego → Portland

SAN–PDX · 933 miles · San Diego International Airport to Portland International Airport

90
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
2 min early
Average arrival delay
0.9%
Cancelled
1,798
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Alaska Airlines86%1,683 flights
  2. 2.Southwest Airlines74%115 flights

What the data says

Morning-you made the right choice.

SAN–PDX flights departing between 6–9 AM arrived on time 95% of the time, versus 79% between 6–9 PM.

Friday is doing you no favors.

SAN–PDX flights arrived on time 92% of the time on Tuesdays. On Fridays: 82%.

Alaska Airlines runs this route best.

Alaska Airlines arrived on time 86% of the time on this route; Southwest Airlines managed 74%.

Ticking up lately.

SAN–PDX flights arrived on time 90% of the time over the last three months in the data, compared with 85% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon85%(263 flights)
  • Tue92%(242 flights)
  • Wed87%(233 flights)
  • Thu82%(261 flights)
  • Fri82%(260 flights)
  • Sat91%(241 flights)
  • Sun82%(281 flights)
On-time by departure window
  • 6–9 AM95%(322 flights)
  • 9 AM–12 PM88%(404 flights)
  • 12–3 PM84%(387 flights)
  • 3–6 PM84%(69 flights)
  • 6–9 PM79%(488 flights)
  • 9 PM–12 AM87%(111 flights)
On-time trend by month
87%
May

Jun 81% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%164
July 202582%154
August 202582%145
September 202588%129
October 202587%143
November 202581%145
December 202583%155
January 202682%133
February 202691%121
March 202692%172
April 202691%162
May 202687%158

Keep nerding

Based on 1,798 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.