Flight UA1074
United Airlines flight UA1074
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Alerts at this flight's airports
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Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
Boston (BOS) to San Francisco (SFO)
Historically, this flight arrives 15+ minutes late 22% of the time, and when it is late the delay averages 72 minutes. It was cancelled 0.4% of the time.
- On-time arrivals
- 77.8%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 72 min
- Flights arriving 15+ minutes late
- Flights tracked
- 269
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 66%
- Late-arriving aircraft 16%
- Airline (crew, maintenance, cleaning) 16%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 66 minutes. It was cancelled 3.8% of the time.
- On-time arrivals
- 94.1%
- Less than 15 minutes late
- Cancelled
- 3.8%
- Of scheduled flights
- Average delay when late
- 66 min
- Flights arriving 15+ minutes late
- Flights tracked
- 53
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 42%
- Extreme weather 39%
- Airline (crew, maintenance, cleaning) 19%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to San Diego (SAN)
Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 44 minutes. It was cancelled 2.1% of the time.
- On-time arrivals
- 74.5%
- Less than 15 minutes late
- Cancelled
- 2.1%
- Of scheduled flights
- Average delay when late
- 44 min
- Flights arriving 15+ minutes late
- Flights tracked
- 48
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 55%
- Airline (crew, maintenance, cleaning) 35%
- Air traffic control & airport 9%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Phoenix (PHX)
Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 135 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 97.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 135 min
- Flights arriving 15+ minutes late
- Flights tracked
- 37
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 100%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dulles (IAD) to Austin (AUS)
Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 59 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 80.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 32
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Air traffic control & airport 33%
- Airline (crew, maintenance, cleaning) 22%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Cleveland (CLE) to San Francisco (SFO)
Only 17 flights on record, which is too few for reliable odds.
- On-time arrivals
- 88.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 23 min
- Flights arriving 15+ minutes late
- Flights tracked
- 17
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 53%
- Airline (crew, maintenance, cleaning) 47%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Santa Barbara (SBA)
Only 13 flights on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- â
- Flights arriving 15+ minutes late
- Flights tracked
- 13
- Scheduled flights in the period
San Francisco (SFO) to Philadelphia (PHL)
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
- 17 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2
- 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).
Dallas-Fort Worth (DFW) to San Francisco (SFO)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- â
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
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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 | 86.7% | 46 |
| October 2025 | 75.0% | 56 |
| November 2025 | 83.3% | 25 |
| December 2025 | 87.3% | 58 |
| January 2026 | 87.7% | 58 |
| February 2026 | 86.5% | 39 |
| March 2026 | 93.5% | 31 |
| April 2026 | 93.5% | 31 |
| May 2026 | 83.3% | 48 |
| June 2026 | 66.7% | 30 |
| July 2026 | 52.4% | 21 |
| August 2026 | 69.0% | 29 |
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