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Route Reliability

Seattle → Spokane

SEA–GEG · 224 miles · Seattle–Tacoma International Airport to Spokane International Airport

87
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
2 min
Average arrival delay
1.0%
Cancelled
6,396
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines88%2,962 flights
  2. 2.Alaska Airlines79%3,434 flights

What the data says

Morning-you made the right choice.

SEA–GEG flights departing between 6–9 AM arrived on time 95% of the time, versus 78% between 9 PM–12 AM.

Skip Thursday if you can.

SEA–GEG flights arrived on time 87% of the time on Wednesdays. On Thursdays: 78%.

Delta Air Lines runs this route best.

Delta Air Lines arrived on time 88% of the time on this route; Alaska Airlines managed 79%.

Ticking up lately.

SEA–GEG flights arrived on time 87% of the time over the last three months in the data, compared with 84% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon82%(932 flights)
  • Tue87%(927 flights)
  • Wed87%(898 flights)
  • Thu78%(914 flights)
  • Fri79%(896 flights)
  • Sat87%(856 flights)
  • Sun81%(905 flights)
On-time by departure window
  • 6–9 AM95%(828 flights)
  • 9 AM–12 PM82%(1297 flights)
  • 12–3 PM86%(786 flights)
  • 3–6 PM80%(1233 flights)
  • 6–9 PM83%(843 flights)
  • 9 PM–12 AM78%(1341 flights)
On-time trend by month
88%
May

Jun 74% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%562
July 202573%599
August 202576%585
September 202585%555
October 202590%562
November 202589%496
December 202579%499
January 202685%494
February 202689%468
March 202686%498
April 202688%475
May 202688%535

Keep nerding

Based on 6,396 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.