Historical on-time performance
Newark to St. Louis
872 miData through Dec 2025Source: US DOT · BTS
Flights on EWR–STL arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled6.6%of scheduled flights
based on 847 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time76%Medianon timep9035 minCancel6.6%Flights847
Why flights run late
Delay causes
- Airline22%
- Weather9%
- Air traffic (NAS)20%
- Late aircraft50%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly EWR → STL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 62% to 90% on time.
- Mornings90% on time · p90 10 min · 870 flights
- Middays85% on time · p90 25 min · 146 flights · limited
- Evenings76% on time · p90 70 min · 312 flights
- Afternoons76% on time · p90 65 min · 766 flights
- Overnights62% on time · p90 85 min · 640 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 81% on time.
- Mondays81% on time · p90 35 min · 399 flights
- Wednesdays80% on time · p90 45 min · 395 flights
- Tuesdays80% on time · p90 30 min · 401 flights
- Fridays78% on time · p90 60 min · 396 flights
- Saturdays77% on time · p90 45 min · 363 flights
- Sundays77% on time · p90 65 min · 390 flights
- Thursdays71% on time · p90 60 min · 390 flights
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