Route Reliability
Baltimore → Houston
BWI–IAH · 1,235 miles · Baltimore/Washington International Thurgood Marshall Airport to George Bush Intercontinental Airport
- 80%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 1.9%
- Cancelled
- 1,414
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines83%915 flights
- 2.Spirit Airlines77%411 flights
Not enough history to rank: Frontier Airlines (88 flights). We rank airlines only after 100 flights on the route.
What the data says
Morning-you made the right choice.
BWI–IAH flights departing between 6–9 AM arrived on time 91% of the time, versus 54% between 9 PM–12 AM.
Friday is doing you no favors.
BWI–IAH flights arrived on time 86% of the time on Tuesdays. On Fridays: 77%.
United Airlines has a slight edge here.
United Airlines arrived on time 83% of the time on this route; Spirit Airlines managed 77%.
Recent months have been rougher.
BWI–IAH flights arrived on time 75% of the time over the last three months in the data, compared with 83% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon78%(217 flights)
- Tue86%(172 flights)
- Wed81%(187 flights)
- Thu83%(231 flights)
- Fri77%(220 flights)
- Sat81%(156 flights)
- Sun78%(199 flights)
- 3–6 AM81%(16 flights)
- 6–9 AM91%(406 flights)
- 9 AM–12 PM83%(133 flights)
- 12–3 PM82%(364 flights)
- 3–6 PM69%(227 flights)
- 6–9 PM69%(223 flights)
- 9 PM–12 AM54%(13 flights)
Jun 68% → May 69% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 68% | 108 |
| July 2025 | 78% | 121 |
| August 2025 | 86% | 116 |
| September 2025 | 89% | 123 |
| October 2025 | 87% | 130 |
| November 2025 | 83% | 132 |
| December 2025 | 74% | 105 |
| January 2026 | 88% | 110 |
| February 2026 | 86% | 99 |
| March 2026 | 80% | 109 |
| April 2026 | 75% | 117 |
| May 2026 | 69% | 112 |
Same trip, other airports
Keep nerding
Based on 1,414 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.