Historical on-time performance
Raleigh-durham to Houston
1,043 miData through Dec 2025Source: US DOT · BTS
Flights on RDU–IAH arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 690 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time83%Medianon timep9030 minCancel1.0%Flights690
Why flights run late
Delay causes
- Airline30%
- Weather3%
- Air traffic (NAS)40%
- Late aircraft27%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly RDU → IAH
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 64% to 86% on time.
- Mornings86% on time · p90 15 min · 1,183 flights
- Middays80% on time · p90 30 min · 61 flights · limited
- Afternoons74% on time · p90 50 min · 647 flights
- Evenings64% on time · p90 85 min · 625 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 81% on time.
- Tuesdays81% on time · p90 40 min · 353 flights
- Saturdays81% on time · p90 35 min · 293 flights
- Fridays78% on time · p90 40 min · 379 flights
- Wednesdays78% on time · p90 30 min · 347 flights
- Sundays76% on time · p90 45 min · 375 flights
- Thursdays74% on time · p90 45 min · 391 flights
- Mondays74% on time · p90 60 min · 394 flights
Advertisement
Keep exploring