Route Reliability
Miami → Houston
MIA–IAH · 964 miles · Miami International Airport to George Bush Intercontinental Airport
- 77%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 1.3%
- Cancelled
- 3,764
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines86%1,485 flights
- 2.Frontier Airlines74%141 flights
- 3.American Airlines72%1,643 flights
- 4.Spirit Airlines70%495 flights
What the data says
Morning flights do better here.
MIA–IAH flights departing between 6–9 AM arrived on time 91% of the time, versus 66% between 3–6 PM.
Sunday scaries are real for this one.
MIA–IAH flights arrived on time 82% of the time on Tuesdays. On Sundays: 70%.
United Airlines has a clear lead on this route.
United Airlines arrived on time 86% of the time on this route; Spirit Airlines managed 70%.
Recent months have been rougher.
MIA–IAH flights arrived on time 75% of the time over the last three months in the data, compared with 84% 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
- Mon79%(532 flights)
- Tue82%(499 flights)
- Wed80%(481 flights)
- Thu77%(546 flights)
- Fri78%(544 flights)
- Sat76%(534 flights)
- Sun70%(573 flights)
- 3–6 AM73%(11 flights)
- 6–9 AM91%(934 flights)
- 9 AM–12 PM87%(421 flights)
- 12–3 PM79%(581 flights)
- 3–6 PM66%(809 flights)
- 6–9 PM67%(476 flights)
- 9 PM–12 AM68%(477 flights)
Jun 70% → May 76% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 70% | 297 |
| July 2025 | 69% | 303 |
| August 2025 | 68% | 297 |
| September 2025 | 82% | 276 |
| October 2025 | 81% | 303 |
| November 2025 | 80% | 327 |
| December 2025 | 84% | 338 |
| January 2026 | 86% | 334 |
| February 2026 | 83% | 305 |
| March 2026 | 70% | 332 |
| April 2026 | 79% | 306 |
| May 2026 | 76% | 291 |
Same trip, other airports
Keep nerding
Based on 3,764 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.