Which airline is most reliable for SEA (Seattle) to PDX (Portland)?

The most reliable airline on the SEA to PDX route is Delta Air Lines, with an on-time arrival rate of 81%.

How often are flights delayed from SEA to PDX?

About 18% of flights from SEA to PDX experience delays. 82% arrive on time.

What's the average delay on SEA to PDX flights?

When flights from SEA to PDX are delayed, the average delay is approximately 43 minutes.

SEA → PDX

SEA (Seattle) to PDX (Portland)

SEA (Seattle) to PDX (Portland) flights arrive on time 82% of the time. The most reliable airline on this route is Delta Air Lines at 81%. The average delay is 43 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated March 2026.

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SEA → PDX on-time performance by month

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This route is on time most of the time. About 82% of flights arrive on schedule.

Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Delta Air Lines edges out JetBlue Airways on this route — 81% vs 76% on time.

Airline Comparison

Delta Air Lines leads at 81% on time; JetBlue Airways trails at 76%.

SEA Airport PDX Airport

Check the return: PDX → SEA

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Data last updated March 2026. Source: Bureau of Transportation Statistics.