Route profile
GEG→PHX
Flight reliability, delays and best times to fly from Spokane to Phoenix, 1,020 miles.
Right now
FlyerIntel does not currently have live operational data for this airport.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 83% of comparable major US routes (4,598 compared)
Calculated from 3,678 flights. How this is calculated · What counts as on time
GEG → PHX arrives on time 85.0% of the time; the return trip, PHX → GEG, arrives on time 77.3% of the time, a 7.8-point gap between the two directions of the same city pair.
GEG → PHX spends 22.1 minutes on the ground on a 1,020-mile trip: 15.0 minutes from pushback to wheels-up at GEG and 7.1 minutes from touchdown to gate at PHX.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where GEG to PHX differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
GEG to PHX is at its best against routes of similar length for flights scheduled at 3 PM: 81.4% arrive on time, 11.2 points ahead of the 70.2% those routes manage at that hour. Against all other routes the gap is 8.7 points.
GEG to PHX holds up on Saturdays better than routes of similar length do: 88.6% on time to their 77.3%, a 11.3 points lead. Against all other routes the gap is 9.5 points.
August is kinder to GEG to PHX than to routes of similar length: 88.5% on time against 74.3%, 14.2 points better. Against all other routes the gap is 12 points.
Southwest Airlines does better on GEG to PHX than on its routes of similar length: 86.3% on time here, 75.6% there, 10.7 points apart. Against all other routes the gap is 8.9 points.
GEG to PHX against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 3 PM departures | 81.4% | routes of similar length | 70.2% | +11.2 pts | 1,021 here, 176,598 there |
| Weekday: Saturday | 88.6% | routes of similar length | 77.3% | +11.3 pts | 533 here, 381,701 there |
| Month: August | 88.5% | routes of similar length | 74.3% | +14.2 pts | 260 here, 228,965 there |
| Airline: Southwest Airlines | 86.3% | routes of similar length | 75.6% | +10.7 pts | 1,763 here, 673,288 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 1,020 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
GEG to PHX in context
This route against GEG and PHX as a whole, against similar routes from GEG, and against its own first year, July 2023 – July 2026.
Arriving at PHX, GEG to PHX is on time 85.0% of the time, 4.3 points better than the airport’s other arrivals at PHX (80.7%, from 589,501 flights).
Of the 3,121 flights scheduled in hours with at least 120 flights, 6 AM is the busiest hour with 1,113 (35.7%), 88.9% of them on time, and 12 PM the quietest with 172 (5.5%), 83.0% of them on time.
Airport comparisons take this route’s flights out of the airport total. Length means within 15% of this route’s distance, with at least 3 other routes from the same origin. On-time gaps are stated at 2 points and 2 standard errors, cancellation gaps at 0.5 points and 2 standard errors, and every group needs 750 flights. These are differences in the flights counted, not causes.
When it goes wrong
July 2023 – July 2026
25 min late
against a median of 7 min early
Percentiles over 3,678 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at PHX after arriving from GEG.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 31% | Likely to miss |
| 45 min | 14% | Some risk |
| 60 min | 8.6% | Some risk |
| 90 min | 5.0% | Some risk |
| 120 min | 3.6% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.24% of the time and diverts 0.11% of the time, which a late arrival never shows up in.
Chance of missing is the share of 3,665 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 25 minutes late (90th-percentile gate arrival delay), over 3,678 operations.
Any other layover length: connection checker.
Best time to fly
GEG → PHX flights departing 5–9 AM arrived on time 90.4% of the time, against 80.3% for 3–6 PM departures, a gap of 10.1 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 88.9% on time from 1,113 flights
- 7 AM: 92.9% on time from 297 flights
- 8 AM to 11 AM: too few flights to score
- 12 PM: 83.0% on time from 172 flights
- 1 PM: 81.9% on time from 216 flights
- 2 PM: 81.3% on time from 300 flights
- 3 PM: 81.4% on time from 1,023 flights
- 4 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why GEG → PHX runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for GEG → PHX. Only delays of 15 minutes or more are attributed. What the five causes mean
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| American Airlines | 1,823 | 84.3% | 0.27% | -8 min | 6.5% |
| Southwest Airlines | 1,769 | 86.3% | 0.17% | -6 min | 3.3% |
American Airlines flew 50.8% of the 3,592 flights listed.
Southwest Airlines arrived on time 2.0 percentage points more often than American Airlines on this route.
Weekly and seasonal patterns
By day of week
Saturday is historically the most reliable day and Sunday the least, a gap of 5.6 percentage points.
By month
- Jan: 80.6%
- Feb: 87.3%
- Mar: 84.6%
- Apr: 87.7%
- May: 87.4%
- Jun: 84.6%
- Jul: 80.4%
- Aug: 88.5%
- Sep: 91.0%
- Oct: 86.3%
- Nov: 86.7%
- Dec: 78.8%
December is historically the weakest month and September the strongest, a spread of 12.2 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: too few flights to score (65)
- August 2023: too few flights to score (64)
- September 2023: too few flights to score (67)
- October 2023: too few flights to score (94)
- November 2023: too few flights to score (96)
- December 2023: too few flights to score (98)
- January 2024: too few flights to score (83)
- February 2024: too few flights to score (81)
- March 2024: too few flights to score (115)
- April 2024: too few flights to score (101)
- May 2024: too few flights to score (96)
- June 2024: too few flights to score (95)
- July 2024: too few flights to score (96)
- August 2024: 90.9% from 121 flights
- September 2024: too few flights to score (92)
- October 2024: too few flights to score (105)
- November 2024: too few flights to score (113)
- December 2024: too few flights to score (119)
- January 2025: too few flights to score (102)
- February 2025: too few flights to score (97)
- March 2025: 90.1% from 121 flights
- April 2025: 84.2% from 120 flights
- May 2025: too few flights to score (98)
- June 2025: too few flights to score (91)
- July 2025: too few flights to score (90)
- August 2025: too few flights to score (75)
- September 2025: too few flights to score (64)
- October 2025: too few flights to score (78)
- November 2025: too few flights to score (99)
- December 2025: too few flights to score (109)
- January 2026: 75.8% from 125 flights
- February 2026: too few flights to score (114)
- March 2026: 78.1% from 131 flights
- April 2026: 90.1% from 122 flights
- May 2026: too few flights to score (118)
- June 2026: too few flights to score (110)
- July 2026: too few flights to score (113)
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 83.7% against 87.4% in the 12 months before — declining by 3.7 percentage points.
Data and methodology
Calculated by FlyerIntel from 3,678 GEG → PHX flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed