Flight number record
UA 2115
United Airlines · Newark to San Francisco
- Route
- EWR → SFO
- Departs
- 06:00
- Flights
- 363
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2115, check with United Airlines.
UA 2115 lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 363 flights, with a median arrival 8 minutes early.
Set against the rest of the country, UA 2115's record is 6 points better than the US average of 77.6%. That gap is worth roughly 63 fewer late arrivals for every thousand flights.
Key figures
On time
83.9%
Arrivals under 15 minutes late, of 353 completed flights
Avg delay
66 min
Across delayed arrivals only, not all flights
Cancelled
2.48%
National rate is 1.81%
1 hour+ late
4.5%
National rate is 8.1%
These figures cover 363 flights between July 2025 and June 2026. The median arrival is 8 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Schedule
When UA 2115 flies
UA 2115 is scheduled to leave Newark (EWR) at 06:00 local time and reach San Francisco (SFO) at 09:34. That slot held for 362 of the 363 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00362 flights99.7%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 2115 runs 5 points worse at 83.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
UA 2115 next to EWR to SFO
Every carrier on EWR to SFO combined arrived on time 69.8% of the time across 4,403 flights, so UA 2115 is 14 points ahead of it. United flew 3,793 flights on the same city pair under all its flight numbers, including this one, and those ran 68.9% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2115thin sample | 363 | 83.9% | 66 min | 2.48% | B |
| All United Airlines on EWR–SFO | 3,793 | 68.9% | 92 min | 2.53% | C |
| All carriers on EWR–SFO | 4,403 | 69.8% | 89 min | 2.32% | C |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2115 quarter by quarter
UA 2115 did not run the same all year. Its best quarter was Apr–Jun 2026 at 88.6% on time and its weakest Oct–Dec 2025 at 78.3%, a swing of 10 points on roughly 91 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202592 flights85.6%
- Oct–Dec 202592 flights78.3%
- Jan–Mar 202689 flights83.1%
- Apr–Jun 202690 flights88.6%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2115 ranged from 79.6% on Friday to 88.0% on Wednesday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why UA 2115 runs late
One category carries most of the weight here. Carrier accounts for 50% of the 3,758 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 50%Carrier
- 28%National Airspace System
- 20%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 50%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,886 of the 3,758 delay minutes reported here. The split is drawn from 3,758 delay minutes reported on UA 2115.
Cancellations sit at 2.48% against a national 1.81%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.5% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 2,565 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The same number turns up on four other city pairs in the data, including SFO to BUR (94), SFO to PHX (72) and SFO to MSY (49), but none flew often enough under UA 2115 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to SFO only.
One caution: this is a thin sample. 363 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking UA 2115
For a booking, read UA 2115 as 83.9% on time with 2.48% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- EWR to SFO, every carrier and departure
- SFO to EWR, the return direction
- United Airlines 2328 on the same route67.9%
- United Airlines 648 on the same route70.3%
- United Airlines 1343 on the same route69.4%
- United Airlines 1777 on the same route72.4%
- United Airlines 1960 on the same route73.7%
- United Airlines 1227 on the same route73.0%
- Newark Liberty International (EWR) delay statistics
- San Francisco International (SFO) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.