Which airline is most reliable for SEA (Seattle) to AUS (Austin)?

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

How often are flights delayed from SEA to AUS?

About 22% of flights from SEA to AUS experience delays. 78% arrive on time.

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

When flights from SEA to AUS are delayed, the average delay is approximately 39 minutes.

SEA → AUS

SEA (Seattle) to AUS (Austin)

SEA (Seattle) to AUS (Austin) flights arrive on time 78% of the time. The most reliable airline on this route is Delta Air Lines at 81%. The average delay is 39 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 → AUS on-time performance by month

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This route is on time most of the time. About 78% 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 75% on time.

Airline Comparison

Delta Air Lines leads at 81% on time; JetBlue Airways trails at 75%.

SEA Airport AUS Airport

Check the return: AUS → SEA

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