Historical on-time performance
Boston to Houston
1,597 miData through Dec 2025Source: US DOT · BTS
Flights on BOS–IAH arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 2,016 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time79%Medianon timep9040 minCancel0.9%Flights1,577
- JetBlue AirwaysOn-time74%Medianon timep9050 minCancel0.7%Flights439
Why flights run late
Delay causes
- Airline24%
- Weather1%
- Air traffic (NAS)31%
- Late aircraft44%
- 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 BOS → IAH
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 — 84% on time.
- Mornings84% on time · p90 20 min · 2,150 flights
- Middays80% on time · p90 30 min · 1,407 flights
- Afternoons68% on time · p90 65 min · 1,476 flights
- Evenings65% on time · p90 75 min · 712 flights
- Overnights43% on time · p90 100 min · 126 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 79% on time.
- Wednesdays79% on time · p90 35 min · 841 flights
- Tuesdays79% on time · p90 35 min · 838 flights
- Saturdays78% on time · p90 40 min · 769 flights
- Sundays75% on time · p90 50 min · 848 flights
- Thursdays75% on time · p90 50 min · 849 flights
- Fridays74% on time · p90 50 min · 860 flights
- Mondays73% on time · p90 55 min · 866 flights
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