Which airline is most reliable for SEA (Seattle) to TUS (Tucson)?

The most reliable airline on the SEA to TUS route is Delta Air Lines, with an on-time arrival rate of 85%.

How often are flights delayed from SEA to TUS?

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

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

When flights from SEA to TUS are delayed, the average delay is approximately 53 minutes.

Is a short connection safe after a SEA to TUS flight?

With 82% of SEA to TUS flights arriving on time and an average delay of 53 minutes when late, a connection under 60 minutes at TUS is risky. We recommend at least 75-90 minutes for domestic connections after this route.

SEA → TUS

SEA (Seattle) to TUS (Tucson)

SEA (Seattle) to TUS (Tucson) flights arrive on time 82% of the time. The most reliable airline on this route is Delta Air Lines at 85%. The average delay is 53 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated October 2026.

SEA → TUS on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

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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).

Accurate?

Airlines are roughly equal on this route — Delta Air Lines leads slightly at 85% vs Alaska Airlines at 81%.

Airline Comparison

Delta Air Lines leads at 85% on time; Alaska Airlines trails at 81%.

Accurate?

Good to know

Departing from SEA

81% on time

Expect ~20 min sitting on the taxiway after your gate pushes back. SEA has long runway queues.

TSA is currently ~27 min. Best time: 4 AM (about 5 min).

More about SEA →

Arriving at TUS

83% on time

When flights into TUS are late, the average delay is 69 minutes. Build buffer if you have ground plans.

If connecting at TUS: TSA is ~29 min right now. Allow at least 60 minutes for a domestic connection.

More about TUS →Connection times at TUS →

Flight cancelled or delayed?

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Flying out of SEA? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

SEA Airport TUS Airport

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