Flight UA404
United Airlines flight UA404
Looking for UA404 in the airâŚ
Alerts at this flight's airports
Houston (IAH) to Newark (EWR)
Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 75 minutes. It was cancelled 2.7% of the time.
- On-time arrivals
- 66.6%
- Less than 15 minutes late
- Cancelled
- 2.7%
- Of scheduled flights
- Average delay when late
- 75 min
- Flights arriving 15+ minutes late
- Flights tracked
- 365
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 40%
- Late-arriving aircraft 30%
- Airline (crew, maintenance, cleaning) 25%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Antonio (SAT) to Houston (IAH)
Historically, this flight arrives 15+ minutes late 22% of the time, and when it is late the delay averages 98 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 78.1%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 98 min
- Flights arriving 15+ minutes late
- Flights tracked
- 201
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 70%
- Late-arriving aircraft 24%
- Airline (crew, maintenance, cleaning) 7%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Houston (IAH)
Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 48 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 87.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 48 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 36%
- Late-arriving aircraft 32%
- Airline (crew, maintenance, cleaning) 31%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Salt Lake City (SLC) to Houston (IAH)
Only 19 flights on record, which is too few for reliable odds.
- On-time arrivals
- 94.4%
- Less than 15 minutes late
- Cancelled
- 5.3%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 19
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 63%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
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Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.5% | 54 |
| October 2025 | 58.1% | 31 |
| November 2025 | 62.1% | 30 |
| December 2025 | 67.4% | 45 |
| January 2026 | 94.3% | 36 |
| February 2026 | 79.1% | 45 |
| March 2026 | 73.3% | 62 |
| April 2026 | 75.0% | 60 |
| May 2026 | 77.0% | 62 |
| June 2026 | 67.8% | 60 |
| July 2026 | 51.7% | 62 |
| August 2026 | 77.0% | 62 |
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