Historical on-time performance
Seattle to Newark
Flights on SEA–EWR arrive on time 78% of the time over the last 12 months.
based on 2,180 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Alaska AirlinesOn-time79%Medianon timep9035 minCancel2.2%Flights1,208
- United AirlinesOn-time78%Medianon timep9065 minCancel1.1%Flights972
Why flights run late
Delay causes
- Airline27%
- Weather7%
- Air traffic (NAS)47%
- Late aircraft19%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline11%
- Weather68%
- Air traffic (NAS)21%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 38 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → EWR
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 85% on time.
- Mornings85% on time · p90 20 min · 2,280 flights
- Overnights76% on time · p90 35 min · 2,072 flights
- Afternoons74% on time · p90 75 min · 222 flights
- Middays67% on time · p90 85 min · 1,559 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 83% on time.
- Tuesdays83% on time · p90 25 min · 865 flights
- Wednesdays82% on time · p90 30 min · 864 flights
- Mondays78% on time · p90 35 min · 892 flights
- Saturdays77% on time · p90 50 min · 817 flights
- Fridays74% on time · p90 50 min · 901 flights
- Sundays74% on time · p90 55 min · 904 flights
- Thursdays72% on time · p90 50 min · 892 flights
Keep exploring