How often are SEA to PDX flights on time?

Flights from Seattle (SEA) to Portland (PDX) arrive on time 88% of the time across 48,944 flights of official data.

Which airline is most reliable on the SEA to PDX route?

Delta Air Lines has the best on-time record on this route at 91% across 15,759 flights.

Route reliability

Flights from Seattle to Portland arrive on time 88% of the time across 48,944 flights. Here’s how each airline really performs.

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On-time rate

48,944 flights

Airline	On-time	Flights
Delta Air Lines	91%	15,759
Alaska Airlines	86%	33,185

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg PDX → SEA.

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