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Route Reliability

Spokane → Portland

GEG–PDX · 279 miles · Spokane International Airport to Portland International Airport

93
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
0 min
Average arrival delay
0.9%
Cancelled
1,750
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 88% of the time across 1,750 flights. No comparison to make.

What the data says

The 3–6 AM departure wins.

GEG–PDX flights departing between 3–6 AM arrived on time 97% of the time, versus 79% between 9 AM–12 PM.

Wednesday comes out ahead.

A small edge: 90% on time on Wednesdays against 85% on Thursdays.

Ticking up lately.

GEG–PDX flights arrived on time 90% of the time over the last three months in the data, compared with 86% 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
  • Mon89%(259 flights)
  • Tue88%(243 flights)
  • Wed90%(246 flights)
  • Thu85%(251 flights)
  • Fri88%(254 flights)
  • Sat88%(220 flights)
  • Sun90%(262 flights)
On-time by departure window
  • 3–6 AM97%(359 flights)
  • 6–9 AM91%(344 flights)
  • 9 AM–12 PM79%(19 flights)
  • 12–3 PM87%(330 flights)
  • 3–6 PM86%(352 flights)
  • 6–9 PM80%(331 flights)
On-time trend by month
84%
May

Jun 81% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%145
July 202589%149
August 202592%149
September 202589%144
October 202586%142
November 202593%147
December 202582%149
January 202687%145
February 202691%126
March 202690%147
April 202697%145
May 202684%147

Keep nerding

Based on 1,750 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.