Historical on-time performance
Raleigh-durham to Washington
Flights on RDU–IAD arrive on time 85% of the time over the last 12 months.
based on 1,257 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- United AirlinesOn-time86%Medianon timep9020 minCancel1.3%Flights1,065
- Republic AirwaysOn-time81%Medianon timep9035 minCancel2.1%Flights192
Why flights run late
Delay causes
- Airline20%
- Weather12%
- Air traffic (NAS)23%
- Late aircraft45%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline28%
- Weather56%
- Air traffic (NAS)17%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 18 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 RDU → 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 72% to 93% on time.
- Middays93% on time · p90 5 min · 920 flights
- Mornings90% on time · p90 5 min · 850 flights
- Overnights89% on time · p90 15 min · 140 flights · limited
- Evenings85% on time · p90 45 min · 581 flights
- Afternoons72% on time · p90 35 min · 693 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 90% on time.
- Saturdays90% on time · p90 10 min · 362 flights
- Tuesdays88% on time · p90 15 min · 474 flights
- Wednesdays88% on time · p90 15 min · 471 flights
- Thursdays88% on time · p90 15 min · 483 flights
- Sundays83% on time · p90 25 min · 438 flights
- Fridays83% on time · p90 30 min · 489 flights
- Mondays82% on time · p90 30 min · 467 flights
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