How reliable is Spokane International Airport?
Flights from GEG departed within 15 minutes of schedule in 87% of 127,041 flights in official BTS history — and weather is calmest in Jul. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at GEG looks like
On-time departures
across 127,041 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
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Weather by month
When the weather works for you at Spokane
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 99/100 favorability
Roughest month
Most disruptive — low visibility & fog, snow · 58/100 favorability
The read on GEG
What the numbers say about flying through Spokane International Airport
Across official performance history, flights from Spokane left within 15 minutes of schedule about 87% of the time over 127,041 flights. That's one of the more dependable operational records you'll see. Pair it with a low cancellation rate of 0.8%, so flights here rarely vanish outright. When a departure does run late, the typical delay is around 6 minutes.
On weather, Spokane is an unusually calm-weather airport year-round. July is the calmest stretch for flying, scoring 99 out of 100 for favorable conditions, while December is the most disruptive at 58, driven mainly by low visibility & fog and snow. That's a dramatic seasonal swing — the difference between flying here in its best and worst months is large enough to move your delay odds meaningfully, so timing matters more here than at most airports.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to Spokane, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about GEG
- How reliable is Spokane International Airport (GEG)?
- Flights from Spokane left within 15 minutes of schedule roughly 87% of the time across 127,041 flights of official history — one of the more dependable operational records you'll see. The cancellation rate runs about 0.8%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from GEG for good weather?
- July has the calmest flying weather at Spokane International Airport. December is the most disruptive, mainly from low visibility & fog and snow.
Planning a trip through Spokane?
Score real flights to and from GEG on reliability, weather, and connection safety — not just price.