Flight Reliability
UA 1549 · United Airlines
Houston → Washington (IAH–IAD)
97
Nerd Approved
WanderNerd Reliability Score
- 92%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 0.7%
- Cancelled
- 9 min early
- Median arrival delay
Based on 285 historical flights. Data through May 2026.
What the data says
Tuesday is the weak spot.
UA 1549 arrived on time 98% of the time on Fridays. On Tuesdays: 88%.
Better than the IAH–IAD route average.
UA 1549 arrived on time 92% of the time, versus 80% across the IAH–IAD route.
Better than the United Airlines network average.
UA 1549 arrived on time 92% of the time, versus 79% across the United Airlines network.
The breakdown
- Mon92%(39 flights)
- Tue88%(41 flights)
- Wed93%(40 flights)
- Thu90%(40 flights)
- Fri98%(41 flights)
- Sat90%(41 flights)
- Sun93%(41 flights)
87%
May
Aug 92% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 92% | 13 |
| September 2025 | 97% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 97% | 31 |
| January 2026 | 87% | 30 |
| February 2026 | 93% | 27 |
| March 2026 | 90% | 31 |
| April 2026 | 100% | 30 |
| May 2026 | 87% | 30 |
- Departures on time
- 95%
- Diverted
- 0%
- Flights flown
- 283
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 285 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.