Route Reliability
Spokane → Phoenix
GEG–PHX · 1,020 miles · Spokane International Airport to Phoenix Sky Harbor International Airport
- 86%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0.4%
- Cancelled
- 1,216
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Southwest Airlines89%592 flights
- 2.American Airlines84%579 flights
Not enough history to rank: Frontier Airlines (45 flights). We rank airlines only after 100 flights on the route.
What the data says
Morning flights do better here.
GEG–PHX flights departing between 3–6 AM arrived on time 97% of the time, versus 57% between 6–9 PM.
Saturday comes out ahead.
A small edge: 89% on time on Saturdays against 83% on Mondays.
Southwest Airlines has a slight edge here.
Southwest Airlines arrived on time 89% of the time on this route; American Airlines managed 84%.
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
- Mon83%(167 flights)
- Tue86%(139 flights)
- Wed87%(142 flights)
- Thu86%(192 flights)
- Fri87%(171 flights)
- Sat89%(178 flights)
- Sun84%(220 flights)
- 3–6 AM97%(39 flights)
- 6–9 AM92%(541 flights)
- 9 AM–12 PM90%(62 flights)
- 12–3 PM78%(166 flights)
- 3–6 PM80%(387 flights)
- 6–9 PM57%(14 flights)
Jun 92% → May 88% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 92% | 90 |
| July 2025 | 84% | 90 |
| August 2025 | 88% | 75 |
| September 2025 | 92% | 64 |
| October 2025 | 87% | 78 |
| November 2025 | 82% | 99 |
| December 2025 | 82% | 109 |
| January 2026 | 78% | 124 |
| February 2026 | 91% | 114 |
| March 2026 | 79% | 128 |
| April 2026 | 92% | 121 |
| May 2026 | 88% | 117 |
Keep nerding
Based on 1,216 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.