Flight number record

UA 327

United Airlines · San Diego to Newark

Route: SAN → EWR
Departs: 07:05
Flights: 336
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 327, check with United Airlines.

UA 327 lands a B, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 336 flights, with a median arrival 10 minutes early.

On time

80.2%

Arrivals under 15 minutes late, of 324 completed flights

Avg delay

96 min

Across delayed arrivals only, not all flights

Cancelled

1.79%

National rate is 1.81%

1 hour+ late

9.9%

National rate is 8.1%

These figures cover 336 flights between July 2025 and June 2026. Beyond the headline rate, 9.9% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

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 336 flights, with 07:00 (39 flights) and 13:47 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:0556 flights16.7%
Departs 07:0039 flights11.6%
Departs 13:4738 flights11.3%

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 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 9 points worse at 80.2%. 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 327 next to SAN to EWR

Every carrier on SAN to EWR combined arrived on time 82.9% of the time across 1,561 flights, so UA 327 is 3 points behind it. United flew 1,233 flights on the same city pair under all its flight numbers, including this one, and those ran 82.9% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 327 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 327thin sample	336	80.2%	96 min	1.79%	B
All United Airlines on SAN–EWR	1,233	82.9%	82 min	1.87%	B
All carriers on SAN–EWR	1,561	82.9%	83 min	2.24%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	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 Oct–Dec 2025 at 74.4%, a swing of 12 points on roughly 84 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 202570 flights76.2%
Oct–Dec 202587 flights74.4%
Jan–Mar 202689 flights82.6%
Apr–Jun 202690 flights86.5%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 327 did best on Friday at 87.5% on time and worst on Sunday at 72.7%. Each day rests on about 48 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 327 runs late

One category carries most of the weight here. National Airspace System accounts for 56% of the 6,137 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.

National Airspace System
56%
Carrier
28%
Late-arriving aircraft
16%

56% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,421 minutes out of 6,137, against a national NAS share of 21%. The split is drawn from 6,137 delay minutes reported on UA 327.

Cancellations sit at 1.79% against a national 1.81%, which is ordinary. Diversions add another 1.79%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.9% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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 EWR to PBI (18), ORD to FAT (5) and EWR to SMF (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. 336 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 80.2% on time with 1.79% cancelled over 336 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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.

Key figures