Historical on-time performance
Newark to Washington
212 miData through May 2026Source: US DOT · BTS
Flights on EWR–IAD arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights
based on 1,433 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time71%Medianon timep9065 minCancel2.2%Flights1,433
Why flights run late
Delay causes
- Airline26%
- Weather5%
- Air traffic (NAS)24%
- Late aircraft45%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline6%
- Weather88%
- Air traffic (NAS)6%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 32 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 EWR → IAD
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 — 92% on time.
- Mornings92% on time · p90 5 min · 1,026 flights
- Middays82% on time · p90 20 min · 238 flights
- Overnights68% on time · p90 80 min · 876 flights
- Afternoons65% on time · p90 75 min · 1,213 flights
- Evenings61% on time · p90 100 min · 1,088 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 76% on time.
- Tuesdays76% on time · p90 50 min · 646 flights
- Saturdays73% on time · p90 70 min · 587 flights
- Mondays72% on time · p90 75 min · 645 flights
- Wednesdays72% on time · p90 65 min · 641 flights
- Fridays71% on time · p90 70 min · 643 flights
- Thursdays70% on time · p90 65 min · 641 flights
- Sundays67% on time · p90 65 min · 638 flights
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