Historical on-time performance
New York to Washington
228 miData through May 2026Source: US DOT · BTS
Flights on JFK–IAD arrive on time 92% of the time over the last 12 months.
On-time rate92%arrived within 15 min
p90 delay5 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights
based on 61 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time92%Medianon timep905 minCancel1.6%Flights61
Why flights run late
Delay causes
- Airline46%
- Weather0%
- Air traffic (NAS)32%
- Late aircraft22%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline100%
- Weather0%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 1 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 JFK → IAD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 73% to 86% on time.
- Mornings86% on time · p90 15 min · 197 flights · limited
- Middays85% on time · p90 30 min · 475 flights
- Afternoons73% on time · p90 95 min · 580 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 84% on time.
- Wednesdays84% on time · p90 25 min · 191 flights · limited
- Tuesdays82% on time · p90 30 min · 194 flights · limited
- Thursdays82% on time · p90 50 min · 193 flights · limited
- Sundays80% on time · p90 50 min · 196 flights · limited
- Mondays79% on time · p90 35 min · 194 flights · limited
- Saturdays76% on time · p90 65 min · 195 flights · limited
- Fridays71% on time · p90 100 min · 194 flights · limited
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