Flight UA751
United Airlines flight UA751
Looking for UA751 in the airâŚ
Alerts at this flight's airports
San Francisco (SFO) to Las Vegas (LAS)
Historically, this flight arrives 15+ minutes late 31% of the time, and when it is late the delay averages 55 minutes. It was cancelled 0.6% of the time.
- On-time arrivals
- 68.8%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 55 min
- Flights arriving 15+ minutes late
- Flights tracked
- 356
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 49%
- Air traffic control & airport 30%
- Airline (crew, maintenance, cleaning) 21%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Portland (PDX) to San Francisco (SFO)
Historically, this flight arrives 15+ minutes late 63% of the time, and when it is late the delay averages 69 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 36.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 69 min
- Flights arriving 15+ minutes late
- Flights tracked
- 65
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 55%
- Late-arriving aircraft 43%
- Airline (crew, maintenance, cleaning) 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Portland (PDX)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 51 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 51 min
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 50%
- Air traffic control & airport 50%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Las Vegas (LAS) to Chicago (ORD)
Only 2 flights on record, which is too few for reliable odds.
- On-time arrivals
- 50.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 95 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 81%
- Late-arriving aircraft 17%
- Airline (crew, maintenance, cleaning) 2%
- 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 | 66.7% | 30 |
| October 2025 | 71.0% | 31 |
| November 2025 | 56.7% | 32 |
| December 2025 | 74.2% | 31 |
| January 2026 | 83.9% | 31 |
| February 2026 | 71.4% | 28 |
| March 2026 | 82.4% | 34 |
| April 2026 | 45.0% | 60 |
| May 2026 | 50.0% | 51 |
| June 2026 | 83.3% | 30 |
| July 2026 | 71.0% | 31 |
| August 2026 | 58.2% | 55 |
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