Route profile
PHX→GEG
Flight reliability, delays and best times to fly from Phoenix to Spokane, 1,020 miles.
Right now
Aviation weather is not currently a factor.
FlyerIntel does not currently have live operational data for this airport.
Route reliability
July 2023 – August 2026
Better than 63% of comparable major US routes (4,598 compared)
Calculated from 3,678 flights. How this is calculated · What counts as on time
PHX → GEG arrives on time 77.1% of the time; the return trip, GEG → PHX, arrives on time 85.0% of the time, a 7.9-point gap between the two directions of the same city pair.
PHX → GEG spends 20.3 minutes on the ground on a 1,020-mile trip: 14.7 minutes from pushback to wheels-up at PHX and 5.5 minutes from touchdown to gate at GEG.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
What sets this route apart
Where PHX to GEG differs most from similar routes by hour, weekday, month and airline, July 2023 – August 2026.
PHX to GEG is at its best against routes of similar length for flights scheduled at 2 PM: 79.8% arrive on time, 6.8 points ahead of the 73.0% those routes manage at that hour.
PHX to GEG struggles most at 10 AM: 76.4% of its flights scheduled then arrive on time, 5.6 points behind the 82.0% on routes of similar length at the same hour. Against all other routes the gap is 6.3 points.
PHX to GEG holds up on Sundays better than routes of similar length do: 77.3% on time to their 73.2%, a 4.1 points lead.
February is kinder to PHX to GEG than to routes of similar length: 86.0% on time against 80.5%, 5.5 points better. Against all other routes the gap is 4.6 points.
Southwest Airlines does better on PHX to GEG than on its routes of similar length: 78.6% on time here, 75.4% there, 3.2 points apart.
PHX to GEG against comparable routes
July 2023 – August 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 2 PM departures | 79.8% | routes of similar length | 73.0% | +6.8 pts | 198 here, 179,936 there |
| Hour: 10 AM departures | 76.4% | routes of similar length | 82.0% | −5.6 pts | 645 here, 159,855 there |
| Weekday: Sunday | 77.3% | routes of similar length | 73.2% | +4.1 pts | 616 here, 435,880 there |
| Month: February | 86.0% | routes of similar length | 80.5% | +5.5 pts | 293 here, 213,380 there |
| Airline: Southwest Airlines | 78.6% | routes of similar length | 75.4% | +3.2 pts | 1,804 here, 690,079 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.
PHX to GEG in context
This route against PHX and GEG as a whole, against similar routes from PHX, and against its own first year, July 2023 – August 2026.
Leaving PHX, PHX to GEG is on time 77.1% of the time, 3.1 points worse than the airport’s other departures at PHX (80.2%, from 603,838 flights).
Arriving at GEG, PHX to GEG is on time 77.1% of the time, 2.7 points worse than the airport’s other arrivals at GEG (79.8%, from 52,659 flights).
PHX to GEG cancels 0.19% of its scheduled flights, 0.67 points below the 0.86% on 9 other routes from PHX of similar length (within 15% of 1,020 miles).
Of the 3,313 flights scheduled in hours with at least 120 flights, 11 AM is the busiest hour with 651 (19.6%), 80.3% of them on time, and 1 PM the quietest with 133 (4.0%), 78.9% 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 – August 2026
42 min late
against a median of 3 min early
Percentiles over 3,759 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at GEG after arriving from PHX.
| Connection time | Buffer after the worst tenth of arrivals | Reads as |
|---|---|---|
| 30 min | 12 min short | Not enough room |
| 45 min | 3 min to spare | Tight |
| 60 min | 18 min to spare | Comfortable |
| 90 min | 48 min to spare | Comfortable |
| 120 min | 78 min to spare | Comfortable |
This is one leg of a connection: how much of a layover's own window would still be there if PHX → GEG arrived as late as its worst tenth of arrivals do. 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 0.19% of the time and diverts 0.11% of the time, which a late arrival never shows up in.
Buffer is the connection window minus the route's 90th-percentile gate arrival delay (42 min), over 3,759 operations.
Any other layover length: connection checker.
Best time to fly
PHX → GEG flights departing 5–9 AM arrived on time 90.7% of the time, against 69.1% for 9 PM–5 AM departures, a gap of 21.6 percentage points.
By departure window
By departure hour
- 12 AM to 8 AM: too few flights to score
- 9 AM: 89.3% on time from 329 flights
- 10 AM: 76.4% on time from 645 flights
- 11 AM: 80.3% on time from 651 flights
- 12 PM: 78.9% on time from 253 flights
- 1 PM: 78.9% on time from 133 flights
- 2 PM: 79.8% on time from 200 flights
- 3 PM to 7 PM: too few flights to score
- 8 PM: 70.8% on time from 619 flights
- 9 PM: 69.6% on time from 337 flights
- 10 PM: 67.6% on time from 146 flights
- 11 PM: too few flights to score
Why PHX → GEG runs late
July 2023 – August 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
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 PHX → GEG. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on PHX → GEG, at 53.2%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 90.7% of the time and 9 PM–5 AM departures 69.1%.
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 | 1,863 | 75.7% | 0.16% | -4 min | 9.9% |
| Southwest Airlines | 1,810 | 78.6% | 0.22% | -2 min | 4.2% |
American Airlines flew 50.7% of the 3,673 flights listed.
Southwest Airlines arrived on time 2.9 percentage points more often than American Airlines on this route.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Friday the least, a gap of 9.1 percentage points.
By month
- Jan: 79.8%
- Feb: 86.0%
- Mar: 76.0%
- Apr: 80.6%
- May: 71.1%
- Jun: 68.2%
- Jul: 65.7%
- Aug: 77.4%
- Sep: 81.5%
- Oct: 82.1%
- Nov: 80.7%
- Dec: 79.8%
July is historically the weakest month and February the strongest, a spread of 20.3 percentage points.
Reliability over time
July 2023 – August 2026
- July 2023: too few flights to score (65)
- August 2023: too few flights to score (64)
- September 2023: too few flights to score (68)
- October 2023: too few flights to score (95)
- November 2023: too few flights to score (94)
- 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 (117)
- April 2024: too few flights to score (100)
- 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: 75.2% from 121 flights
- September 2024: too few flights to score (91)
- October 2024: too few flights to score (106)
- November 2024: too few flights to score (112)
- December 2024: too few flights to score (119)
- January 2025: too few flights to score (102)
- February 2025: too few flights to score (98)
- March 2025: 80.2% from 121 flights
- April 2025: too few flights to score (119)
- May 2025: too few flights to score (97)
- June 2025: too few flights to score (92)
- July 2025: too few flights to score (91)
- August 2025: too few flights to score (74)
- September 2025: too few flights to score (64)
- October 2025: too few flights to score (79)
- November 2025: too few flights to score (99)
- December 2025: too few flights to score (109)
- January 2026: 78.9% from 124 flights
- February 2026: too few flights to score (114)
- March 2026: 74.6% from 131 flights
- April 2026: 77.9% 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)
- August 2026: too few flights to score (81)
Over the most recent 12 months (2025-09 to 2026-08), on-time arrivals averaged 73.9% against 82.9% in the 12 months before — declining by 9.0 percentage points.
Data and methodology
Calculated by FlyerIntel from 3,759 PHX → GEG flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – August 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