Route Reliability
Houston → Baltimore
IAH–BWI · 1,235 miles · George Bush Intercontinental Airport to Baltimore/Washington International Thurgood Marshall Airport
- 77%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 1.4%
- Cancelled
- 1,415
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines79%915 flights
- 2.Spirit Airlines77%412 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.
IAH–BWI flights departing between 6–9 AM arrived on time 87% of the time, versus 62% between 3–6 PM.
Sunday scaries are real for this one.
IAH–BWI flights arrived on time 81% of the time on Thursdays. On Sundays: 71%.
Not much between United Airlines and Spirit Airlines.
On this route they all land within 77% to 79% on time. Pick on schedule and price.
Recent months have been rougher.
IAH–BWI flights arrived on time 74% of the time over the last three months in the data, compared with 85% 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%(214 flights)
- Tue81%(176 flights)
- Wed80%(188 flights)
- Thu81%(231 flights)
- Fri75%(224 flights)
- Sat72%(156 flights)
- Sun71%(201 flights)
- 3–6 AM78%(120 flights)
- 6–9 AM87%(384 flights)
- 9 AM–12 PM79%(43 flights)
- 12–3 PM82%(350 flights)
- 3–6 PM62%(74 flights)
- 6–9 PM67%(406 flights)
- 9 PM–12 AM69%(13 flights)
Jun 66% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 66% | 110 |
| July 2025 | 62% | 121 |
| August 2025 | 71% | 115 |
| September 2025 | 83% | 122 |
| October 2025 | 80% | 128 |
| November 2025 | 86% | 133 |
| December 2025 | 77% | 105 |
| January 2026 | 88% | 112 |
| February 2026 | 88% | 101 |
| March 2026 | 69% | 111 |
| April 2026 | 82% | 120 |
| May 2026 | 73% | 112 |
Same trip, other airports
Keep nerding
Based on 1,415 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.