Historical on-time performance
Washington to New York
229 miData through May 2026Source: US DOT · BTS
Flights on IAD–LGA arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled7.1%of scheduled flights
based on 955 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time68%Medianon timep9060 minCancel7.1%Flights955
Why flights run late
Delay causes
- Airline16%
- Weather4%
- Air traffic (NAS)53%
- Late aircraft26%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather40%
- Air traffic (NAS)60%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 68 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 IAD → LGA
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 — 82% on time.
- Mornings82% on time · p90 25 min · 503 flights
- Overnights77% on time · p90 45 min · 663 flights
- Middays72% on time · p90 45 min · 849 flights
- Evenings64% on time · p90 65 min · 666 flights
Best day of week
Saturdays are the most reliable day to fly this route — 84% on time.
- Saturdays84% on time · p90 20 min · 382 flights
- Tuesdays74% on time · p90 45 min · 383 flights
- Wednesdays72% on time · p90 45 min · 374 flights
- Sundays72% on time · p90 45 min · 389 flights
- Mondays71% on time · p90 55 min · 392 flights
- Thursdays70% on time · p90 55 min · 385 flights
- Fridays68% on time · p90 50 min · 401 flights
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