Historical on-time performance
Chicago to Raleigh-durham
647 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–RDU arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 3,002 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time73%Medianon timep9050 minCancel1.4%Flights723
- United AirlinesOn-time79%Medianon timep9035 minCancel0.5%Flights1,237
- Envoy AirOn-time78%Medianon timep9035 minCancel2.5%Flights405
- American AirlinesOn-time67%Medianon timep9075 minCancel2.0%Flights637
Why flights run late
Delay causes
- Airline26%
- Weather8%
- Air traffic (NAS)18%
- Late aircraft49%
- 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 ORD → RDU
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 — 86% on time.
- Mornings86% on time · p90 20 min · 2,391 flights
- Middays81% on time · p90 40 min · 2,276 flights
- Afternoons76% on time · p90 50 min · 1,623 flights
- Evenings69% on time · p90 65 min · 2,275 flights
- Overnights56% on time · p90 80 min · 386 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 80% on time.
- Tuesdays80% on time · p90 40 min · 1,220 flights
- Mondays78% on time · p90 40 min · 1,359 flights
- Thursdays78% on time · p90 45 min · 1,363 flights
- Wednesdays78% on time · p90 50 min · 1,220 flights
- Saturdays78% on time · p90 45 min · 1,124 flights
- Sundays75% on time · p90 60 min · 1,338 flights
- Fridays74% on time · p90 50 min · 1,330 flights
Advertisement
Keep exploring