Flight Reliability
UA 5681 · United Airlines
San Francisco → SBP (SFO–SBP)81% of its flights flew this route. The rest (SCE–ORD, ORD–FWA) are included in these numbers.
- 75%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 0.3%
- Cancelled
- 3 min early
- Median arrival delay
Based on 286 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
UA 5681 departing between 3–6 PM arrived on time 91% of the time, versus 69% between 9 PM–12 AM.
Mondays have been rough.
UA 5681 arrived on time 84% of the time on Thursdays and just 67% on Mondays. That gap is worth planning around.
A bit behind the United Airlines network.
UA 5681 arrived on time 75% of the time, versus 79% across the United Airlines network.
It basically never cancels.
Out of 286 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon67%(42 flights)
- Tue82%(34 flights)
- Wed71%(38 flights)
- Thu84%(43 flights)
- Fri79%(42 flights)
- Sat80%(39 flights)
- Sun67%(46 flights)
- 6–9 AM77%(31 flights)
- 9 AM–12 PM75%(218 flights)
- 12–3 PM—(4 flights)
- 3–6 PM91%(11 flights)
- 6–9 PM—(4 flights)
- 9 PM–12 AM69%(16 flights)
Jun 89% → May 55% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 89% | 18 |
| September 2025 | 73% | 22 |
| October 2025 | 77% | 31 |
| November 2025 | 80% | 30 |
| December 2025 | 73% | 30 |
| January 2026 | 81% | 31 |
| February 2026 | 64% | 28 |
| March 2026 | 80% | 30 |
| April 2026 | 85% | 26 |
| May 2026 | 55% | 31 |
- Departures on time
- 73%
- Diverted
- 0.3%
- Flights flown
- 284
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 286 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.