Flight UA1788
United Airlines flight UA1788
Looking for UA1788 in the airâŚ
Alerts at this flight's airports
Houston (IAH) to Dulles (IAD)
Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 80 minutes. It was cancelled 0.4% of the time.
- On-time arrivals
- 82.8%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 80 min
- Flights arriving 15+ minutes late
- Flights tracked
- 262
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 24%
- Extreme weather 4%
- 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 2% of the time, and when it is late the delay averages 54 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 98.1%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 54 min
- Flights arriving 15+ minutes late
- Flights tracked
- 106
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Grand Junction (GJT) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 76 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 82.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 76 min
- Flights arriving 15+ minutes late
- Flights tracked
- 102
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 36%
- Late-arriving aircraft 28%
- Air traffic control & airport 26%
- Extreme weather 10%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Appleton (ATW)
Historically, this flight arrives 15+ minutes late 40% of the time, and when it is late the delay averages 87 minutes. It was cancelled 4.8% of the time.
- On-time arrivals
- 60.0%
- Less than 15 minutes late
- Cancelled
- 4.8%
- Of scheduled flights
- Average delay when late
- 87 min
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 43%
- Air traffic control & airport 31%
- Airline (crew, maintenance, cleaning) 13%
- Extreme weather 12%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
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Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 91.9% | 37 |
| October 2025 | 91.9% | 62 |
| November 2025 | 91.7% | 60 |
| December 2025 | 87.5% | 48 |
| January 2026 | 90.0% | 31 |
| February 2026 | 86.7% | 45 |
| March 2026 | 71.4% | 35 |
| April 2026 | 83.3% | 30 |
| May 2026 | 83.9% | 31 |
| June 2026 | 76.7% | 30 |
| July 2026 | 86.7% | 30 |
| August 2026 | 72.0% | 52 |
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