BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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GEG→SEA

Spokane, WA (GEG) to Seattle, WA (SEA) flight delay odds

85.0% of 5,183 official scheduled GEG-to-SEA flights arrived on time; 7.5% arrived at least 30 minutes late and 1.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
85.0%arrived on time
7.5%30+ min late
1.1%cancelled
5,183scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.3%all scheduled flights
120+ minutes late1.2%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival-0.6 mincompleted flights

Which departure time was most reliable for GEG to SEA?

Among qualifying GEG-to-SEA departure window results, Early morning had the highest on-time rate: 91.4% of 1,758 flights. Evening was lowest at 80.0% across 984 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,75891.4%3.8%0.9%
Late morning1,02680.6%8.6%1.6%
Afternoon1,41583.5%9.3%0.9%
Evening98480.0%10.6%1.1%

Which weekday was most reliable for GEG to SEA?

Among qualifying GEG-to-SEA weekday results, Tuesday had the highest on-time rate: 88.3% of 762 flights. Thursday was lowest at 78.1% across 755 flights.

DayFlightsOn time30+ minCancelled
Monday76486.0%7.6%0.8%
Tuesday76288.3%7.3%0.3%
Wednesday73687.9%6.2%1.2%
Thursday75578.1%11.1%1.7%
Friday74379.7%8.6%1.9%
Saturday69186.8%5.6%0.4%
Sunday73288.0%5.9%1.1%

Which airline was most reliable for GEG to SEA?

Among qualifying GEG-to-SEA airline results, Delta Air Lines had the highest on-time rate: 92.4% of 343 flights. Alaska Airlines was lowest at 79.7% across 1,820 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines3,02087.3%6.7%1.0%
Alaska Airlines1,82079.7%9.6%1.1%
Delta Air Lines34392.4%4.4%1.5%

Which month was most reliable for GEG to SEA?

Among qualifying GEG-to-SEA month results, May 2026 had the highest on-time rate: 90.8% of 415 flights. July 2025 was lowest at 78.7% across 544 flights.

MonthFlightsOn time30+ minCancelled
July 202554478.7%10.5%0.9%
August 202550480.8%10.3%0.6%
September 202543685.6%8.3%0.0%
October 202544785.0%7.4%0.7%
November 202542486.1%3.8%3.3%
December 202539680.3%8.3%1.0%
January 202643780.5%10.1%2.5%
February 202640090.8%6.0%0.5%
March 202641886.1%6.7%2.2%
April 202638790.7%5.2%0.0%
May 202641590.8%5.1%0.7%
June 202637587.7%6.9%0.3%

What drove GEG to SEA delay minutes?

Airline was the largest recorded GEG-to-SEA delay category, accounting for 38.7% of 39,345 BTS-attributed delay minutes during July 2025–June 2026.

Airline38.7%
Late aircraft25.8%
National airspace16.3%
Weather19.1%
Security0.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.