Skip to content
WanderNerd
Check a flight

Route Reliability

Portland → Spokane

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

92
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
0 min
Average arrival delay
0.8%
Cancelled
1,751
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 87% of the time across 1,751 flights. No comparison to make.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 91% of the time, against 85% between 9 AM–12 PM.

Thursday is the weak spot.

PDX–GEG flights arrived on time 92% of the time on Mondays. On Thursdays: 84%.

Ticking up lately.

PDX–GEG flights arrived on time 91% of the time over the last three months in the data, compared with 87% 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
  • Mon92%(259 flights)
  • Tue85%(245 flights)
  • Wed89%(245 flights)
  • Thu84%(251 flights)
  • Fri85%(254 flights)
  • Sat91%(220 flights)
  • Sun87%(261 flights)
On-time by departure window
  • 6–9 AM90%(360 flights)
  • 9 AM–12 PM85%(331 flights)
  • 12–3 PM91%(354 flights)
  • 3–6 PM86%(346 flights)
  • 9 PM–12 AM85%(344 flights)
On-time trend by month
89%
May

Jun 77% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%146
July 202588%149
August 202587%149
September 202585%144
October 202587%142
November 202591%147
December 202585%149
January 202684%144
February 202693%125
March 202690%147
April 202695%146
May 202689%147

Keep nerding

Based on 1,751 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.