Spokane (GEG) to Boise (BOI): On-Time Performance
Data through July 2026
Spokane (GEG) to Boise (BOI) is a thinner route than most in this dataset — 336 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 88% arrived on time, comfortably above the national average of 78%.
- On-time
- 88%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 0.2%
- Flights/day
- 0.92
- last 12 months
- Duration
- 1h 9m
- scheduled
- Distance
- 287 mi
Monthly on-time trend
Best time to fly from GEG to BOI
Aim for departures around 2 p.m. (94% on-time); avoid 10 a.m. departures (79%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 11 min |
| Tuesday | 91% | 5 min |
| Wednesday | 88% | 7 min |
| Thursday | 89% | 9 min |
| Friday | 86% | 8 min |
| Saturdaybest | 92% | 8 min |
| Sunday | 82% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft52%
- Airline operations31%
- National airspace system11%
- Weather6%
Frequently asked questions
- How often are flights from GEG to BOI delayed?
- 13% of GEG–BOI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 9 minutes.
- What is the best time of day to fly from GEG to BOI?
- Departures around 2 p.m. have the best record (94% on-time), while departures around 10 a.m. have the worst (79%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GEG to BOI?
- The scheduled GEG–BOI flight time averages 1h 9m over 287 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are GEG to BOI flights cancelled?
- 0.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from GEG to BOI?
- January 2026 was the roughest month in this dataset, with only 77% of arrivals on time. The best was November 2025 at 100%. If your dates are flexible, that 23-point gap is worth planning around.
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Related guides
Based on 923 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.