PlainFlights

GEG vs SEA - Airport Comparison

Select two airports to compare on-time performance, delays, cancellations, and top routes using U.S. Department of Transportation Bureau of Transportation Statistics (BTS) data (2020–2025) across all 50 states. See our methodology for how metrics are computed.

Airport A
GEG

Spokane, WA

Spokane, Washington

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Airport B
SEA

Seattle, WA

Seattle, Washington

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Key Performance Metrics

BTS on-time performance data, 2020–2025 cumulative.

Metric GEG SEA
On-Time Rate (higher is better) 84.4% 83.1%
Avg Delay (lower is better) 67.4 min 63.4 min
Delay Rate (lower is better) 15.6% 16.9%
Cancellation Rate (lower is better) 0.63% 0.73%
Total Flights 205,595 1,871,155
Delayed Flights 32,016 315,819
Cancelled Flights 1,303 13,720
Top Delay Cause Carrier Carrier

✓ / ▲ indicates the more favorable value. Data: BTS On-Time Performance, 2020–2025.

Delay Cause Breakdown

GEG - Spokane, WA

Carrier 40.0%
Late Aircraft 33.6%
NAS 17.3%
Weather 8.8%
Security 0.3%

SEA - Seattle, WA

Carrier 44.3%
Late Aircraft 28.6%
NAS 21.0%
Weather 5.8%
Security 0.3%

Top Routes

Top routes from GEG

Route Flights On-Time
GEG → SEA
Seattle
31,745 86.5%
SEA → GEG
Spokane
31,686 83.3%
DEN → GEG
Spokane
10,861 76.8%
GEG → DEN
Denver
10,835 85%
SLC → GEG
Spokane
9,439 87.4%
GEG → SLC
Salt Lake City
9,437 89%

Top routes from SEA

Route Flights On-Time
SEA → LAX
Los Angeles
41,859 84%
LAX → SEA
Seattle
41,819 86.2%
SEA → ANC
Anchorage
41,143 77.5%
ANC → SEA
Seattle
41,064 85.8%
PHX → SEA
Seattle
38,561 84.3%
SEA → PHX
Phoenix
38,549 82.3%

Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) On-time rates exclude cancelled and diverted flights. PlainFlights is not affiliated with BTS or the DOT

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This tool queries live on-time, delay, and cancellation figures for the two selected airports from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.