Historical on-time performance
Baltimore to Houston
Flights on BWI–IAH arrive on time 79% of the time over the last 12 months.
based on 1,195 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-time81%Medianon timep9035 minCancel1.1%Flights803
- Spirit AirlinesOn-time77%Medianon timep9070 minCancel1.9%Flights362
- Frontier AirlinesOn-time57%Medianon timep9095 minCancel0.0%Flights30
Why flights run late
Delay causes
- Airline34%
- Weather9%
- Air traffic (NAS)32%
- Late aircraft24%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline19%
- Weather81%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 16 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 BWI → IAH
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 — 87% on time.
- Mornings87% on time · p90 15 min · 1,427 flights
- Middays79% on time · p90 30 min · 651 flights
- Afternoons74% on time · p90 50 min · 806 flights
- Overnights64% on time · p90 80 min · 201 flights
- Evenings63% on time · p90 85 min · 420 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 82% on time.
- Wednesdays82% on time · p90 25 min · 472 flights
- Tuesdays82% on time · p90 30 min · 475 flights
- Thursdays80% on time · p90 40 min · 545 flights
- Saturdays78% on time · p90 40 min · 437 flights
- Sundays77% on time · p90 40 min · 506 flights
- Fridays76% on time · p90 40 min · 533 flights
- Mondays74% on time · p90 45 min · 537 flights
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