Historical on-time performance
St. Louis to Newark
872 miData through Dec 2025Source: US DOT · BTS
Flights on STL–EWR arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled5.9%of scheduled flights
based on 844 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time75%Medianon timep9055 minCancel5.9%Flights844
Why flights run late
Delay causes
- Airline14%
- Weather5%
- Air traffic (NAS)47%
- Late aircraft35%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly STL → EWR
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 89% on time.
- Mornings89% on time · p90 10 min · 953 flights
- Middays79% on time · p90 35 min · 914 flights
- Evenings60% on time · p90 105 min · 807 flights
- Afternoons55% on time · p90 235 min · 53 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 81% on time.
- Saturdays81% on time · p90 45 min · 361 flights
- Wednesdays78% on time · p90 45 min · 400 flights
- Tuesdays78% on time · p90 35 min · 399 flights
- Thursdays77% on time · p90 65 min · 387 flights
- Mondays76% on time · p90 50 min · 390 flights
- Fridays74% on time · p90 70 min · 396 flights
- Sundays71% on time · p90 70 min · 394 flights
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