Historical on-time performance
Newark to Washington
213 miData through Dec 2025Source: US DOT · BTS
Flights on EWR–IAD arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 1,388 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time69%Medianon timep9080 minCancel1.4%Flights1,388
Why flights run late
Delay causes
- Airline22%
- Weather5%
- Air traffic (NAS)25%
- Late aircraft48%
- 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 → IAD
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 — 91% on time.
- Mornings91% on time · p90 5 min · 1,034 flights
- Middays81% on time · p90 30 min · 352 flights
- Overnights66% on time · p90 80 min · 826 flights
- Afternoons62% on time · p90 80 min · 1,318 flights
- Evenings61% on time · p90 95 min · 1,218 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 75% on time.
- Tuesdays75% on time · p90 50 min · 695 flights
- Wednesdays71% on time · p90 70 min · 690 flights
- Mondays71% on time · p90 75 min · 695 flights
- Thursdays70% on time · p90 65 min · 679 flights
- Saturdays69% on time · p90 80 min · 617 flights
- Fridays68% on time · p90 75 min · 685 flights
- Sundays68% on time · p90 70 min · 687 flights
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