How often are SEA to EWR flights on time?

Flights from Seattle (SEA) to Newark (EWR) arrive on time 90% of the time across 11,315 flights of official data.

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

United Airlines has the best on-time record on this route at 91% across 5,444 flights.

Route reliability

Flights from Seattle to Newark arrive on time 90% of the time across 11,315 flights. Here’s how each airline really performs.

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On-time rate

11,315 flights

Airline	On-time	Flights
United Airlines	91%	5,444
Alaska Airlines	90%	5,871

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

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