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Route Reliability

Spokane → Denver

GEG–DEN · 836 miles · Spokane International Airport to Denver International Airport

89
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
3 min
Average arrival delay
0.2%
Cancelled
2,062
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines85%1,083 flights
  2. 2.Southwest Airlines83%858 flights
  3. 3.Frontier Airlines75%121 flights

What the data says

Morning-you made the right choice.

GEG–DEN flights departing between 3–6 AM arrived on time 96% of the time, versus 75% between 6–9 PM.

Skip Thursday if you can.

GEG–DEN flights arrived on time 90% of the time on Saturdays. On Thursdays: 78%.

United Airlines runs this route best.

United Airlines arrived on time 85% of the time on this route; Frontier Airlines managed 75%.

It basically never cancels.

Out of 2,062 scheduled flights, only 0.2% were cancelled.

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
  • Mon83%(280 flights)
  • Tue80%(276 flights)
  • Wed85%(267 flights)
  • Thu78%(314 flights)
  • Fri80%(286 flights)
  • Sat90%(286 flights)
  • Sun89%(338 flights)
On-time by departure window
  • 3–6 AM96%(560 flights)
  • 6–9 AM95%(160 flights)
  • 9 AM–12 PM82%(208 flights)
  • 12–3 PM76%(648 flights)
  • 3–6 PM78%(380 flights)
  • 6–9 PM75%(89 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
84%
May

Jun 73% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%186
July 202572%194
August 202578%185
September 202584%183
October 202587%164
November 202593%161
December 202583%172
January 202690%165
February 202691%147
March 202684%153
April 202690%165
May 202684%172

Keep nerding

Based on 2,062 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.