Flight UA1478
United Airlines flight UA1478
Looking for UA1478 in the airâŚ
Houston (IAH) to Nashville (BNA)
Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 85 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 66.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 85 min
- Flights arriving 15+ minutes late
- Flights tracked
- 77
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 46%
- Late-arriving aircraft 23%
- Extreme weather 23%
- Airline (crew, maintenance, cleaning) 8%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Houston (IAH) to Dulles (IAD)
Historically, this flight arrives 15+ minutes late 23% of the time, and when it is late the delay averages 84 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 77.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 62
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 42%
- Airline (crew, maintenance, cleaning) 32%
- Late-arriving aircraft 13%
- Extreme weather 12%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Houston (IAH) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 0% of the time. It was cancelled 14.3% of the time.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 14.3%
- Of scheduled flights
- Average delay when late
- â
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- Scheduled flights in the period
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Show as table
| Month | On time | Flights |
|---|---|---|
| February 2026 | 100.0% | 17 |
| March 2026 | 74.2% | 31 |
| April 2026 | 70.0% | 30 |
| May 2026 | 71.0% | 31 |
| June 2026 | 70.0% | 30 |
| July 2026 | 50.0% | 4 |
| August 2026 | 82.4% | 17 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 â August 2026. Covers flights operated by reporting U.S. carriers. About our data