Best Time to Fly BWI to HOU: On-Time Stats by Hour & Airline
Baltimore/Washington International Thurgood Marshall → William P Hobby
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.1% of Baltimore (BWI) to Houston (HOU) flights arrived on time (1,468 scheduled flights). That is 1.5 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (85% on time) and June the worst month (67%).
The cancellation rate was 1.4% (US average 1.8%).
BWI to HOU on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 76.1% | 53 min | 1.4% | 1,468 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BWI to HOU
On-time arrival % by scheduled departure hour (local time), 2,916 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 94.1% | 1.1% | 380 |
| 7am–8am | 88.2% | 0.0% | 287 |
| 8am–9am | 90.6% | 1.5% | 65 |
| 9am–10am | 87.4% | 0.9% | 210 |
| 10am–11am | 84.3% | 0.7% | 270 |
| 11am–12pm | 80.9% | 0.9% | 111 |
| 12pm–1pm | 79.1% | 1.5% | 131 |
| 1pm–2pm | 67.3% | 0.0% | 49 |
| 2pm–3pm | 71.4% | 2.0% | 101 |
| 3pm–4pm | 78.8% | 1.5% | 135 |
| 4pm–5pm | 68.4% | 2.5% | 120 |
| 5pm–6pm | 74.6% | 3.4% | 204 |
| 6pm–7pm | 62.9% | 1.3% | 303 |
| 7pm–8pm | 52.3% | 2.3% | 133 |
| 8pm–9pm | 63.3% | 2.7% | 185 |
| 9pm–10pm | 64.4% | 2.2% | 227 |
| 10pm–11pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BWI to HOU
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 81.5% | +2.7 pts | 1.5% | 66 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.7% | -1.1 pts | 3.0% | 135 |
| Summer peak (Jun 15 - Aug 15) | 69.0% | -9.8 pts | 2.1% | 520 |
| All other days | 78.8% | — | 1.2% | 2,195 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).