Flight number record
UA 327
United Airlines · San Diego to Newark
- Route
- SAN → EWR
- Departs
- 07:05
- Flights
- 352
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 327, check with United Airlines.
UA 327 lands a B, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 352 flights, with a median arrival 10 minutes early.
Key figures
On time
78.8%
Arrivals under 15 minutes late, of 339 completed flights
Avg delay
112 min
Across delayed arrivals only, not all flights
Cancelled
2.27%
National rate is 1.89%
1 hour+ late
10.3%
National rate is 8.3%
These figures cover 352 flights between September 2025 and August 2026. Beyond the headline rate, 10.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 327 flies
UA 327 flies SAN to EWR without a single fixed slot. Its most common scheduled departure was 07:05, used on 56 of 352 flights, with 21:05 (46 flights) and 13:47 (38 flights) next.
- Departs 07:0556 flights15.9%
- Departs 21:0546 flights13.1%
- Departs 13:4738 flights10.8%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 07:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 327 runs 11 points worse at 78.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 327 next to SAN to EWR
Every carrier on SAN to EWR combined arrived on time 81.9% of the time across 1,557 flights, so UA 327 is 3 points behind it. United flew 1,229 flights on the same city pair under all its flight numbers, including this one, and those ran 81.3% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 327thin sample | 352 | 78.8% | 112 min | 2.27% | B |
| All United Airlines on SAN–EWR | 1,229 | 81.3% | 92 min | 2.12% | B |
| All carriers on SAN–EWR | 1,557 | 81.9% | 90 min | 2.25% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 327 quarter by quarter
UA 327 did not run the same all year. Its best quarter was Apr–Jun 2026 at 86.5% on time and its weakest Jul–Sep 2026 at 64.2%, a swing of 22 points on roughly 88 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 202526 flights—
- Oct–Dec 202587 flights74.4%
- Jan–Mar 202689 flights82.6%
- Apr–Jun 202690 flights86.5%
- Jul–Sep 202660 flights64.2%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 327 did best on Tuesday at 87.8% on time and worst on Sunday at 66.7%. Each day rests on about 50 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 327 runs when it is late
UA 327 often beats the schedule: 135 of 339 completed flights, 40%, arrived 15 minutes or more early. The 72 late arrivals split 19 under half an hour, 18 between 30 and 60 minutes, and 35 an hour or more.
- 15+ min early135 flights39.8%
- Within 15 min132 flights38.9%
- 15–29 min late19 flights5.6%
- 30–59 min late18 flights5.3%
- 1–2 hours late18 flights5.3%
- 2+ hours late17 flights5.0%
Scale runs 0% to 100%.
Share of 339 completed flights by arrival against schedule.
12 of 64 late departures made up the time and arrived on time, 19% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at EWR.
The worst days
Worst days for UA 327
The latest arrival of the period was on 9 August 2026, 11 hours 37 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across August, July, December and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 August 2026 | 11 hours 37 minutes | Extreme weather |
| 31 July 2026 | 10 hours 53 minutes | Extreme weather |
| 19 July 2026 | 10 hours 17 minutes | National Airspace System |
| 19 December 2025 | 8 hours 40 minutes | Late-arriving aircraft |
| 12 November 2025 | 6 hours 31 minutes | Carrier |
Delay causes
Why UA 327 runs late
National Airspace System accounts for 44% of the 8,081 delay minutes carriers reported here, and the remaining four split what is left.
- 44%National Airspace System
- 24%Late-arriving aircraft
- 21%Carrier
- 12%Extreme weather
Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure. The split is drawn from 8,081 delay minutes reported on UA 327.
Cancellations sit at 2.27% against a national 1.89%, which is ordinary. Diversions add another 1.42%.
Connections and routes
What a delay on this flight costs
10.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 2,425 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 ORD to FAT (5), EWR to SMF (1) and IAH to AUS (1), but none flew often enough under UA 327 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SAN to EWR only.
One caution: this is a thin sample. 352 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 327
For a booking, read UA 327 as 78.8% on time with 2.27% cancelled over 352 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SAN to EWR, every carrier and departure
- EWR to SAN, the return direction
- United Airlines 1827 on the same route84.5%
- United Airlines 427 on the same route81.6%
- San Diego International (SAN) delay statistics
- Newark Liberty International (EWR) 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
- How often a connection fails at the major US hubs
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.