Historical on-time performance
Houston to Baltimore
Flights on IAH–BWI arrive on time 75% of the time over the last 12 months.
based on 1,192 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.
- United AirlinesOn-time75%Medianon timep9050 minCancel0.7%Flights802
- Spirit AirlinesOn-time74%Medianon timep9050 minCancel1.7%Flights360
- Frontier AirlinesOn-time53%Median5 minp9090 minCancel0.0%Flights30
Why flights run late
Delay causes
- Airline39%
- Weather7%
- Air traffic (NAS)19%
- Late aircraft35%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline25%
- Weather75%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 12 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 IAH → BWI
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 66% to 84% on time.
- Mornings84% on time · p90 25 min · 1,095 flights
- Middays80% on time · p90 35 min · 886 flights
- Evenings69% on time · p90 60 min · 1,346 flights
- Afternoons66% on time · p90 60 min · 127 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 82% on time.
- Wednesdays82% on time · p90 35 min · 476 flights
- Tuesdays79% on time · p90 40 min · 473 flights
- Thursdays78% on time · p90 45 min · 546 flights
- Saturdays74% on time · p90 55 min · 431 flights
- Fridays74% on time · p90 55 min · 533 flights
- Mondays74% on time · p90 45 min · 532 flights
- Sundays73% on time · p90 50 min · 511 flights
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