Flight number record

UA 1363

United Airlines · Chicago to Los Angeles

Route: ORD → LAX
Departs: 13:00
Flights: 328
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1363, check with United Airlines.

UA 1363 lands a B+, 4 points better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 328 flights, with a median arrival 8 minutes early.

Set against the rest of the country, UA 1363's record is 4 points better than the US average of 77.3%. That gap is worth roughly 44 fewer late arrivals for every thousand flights.

On time

81.7%

Arrivals under 15 minutes late, of 327 completed flights

Avg delay

98 min

Across delayed arrivals only, not all flights

Cancelled

0.30%

National rate is 1.89%

1 hour+ late

7.0%

National rate is 8.3%

These figures cover 328 flights between September 2025 and August 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.

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Schedule

When UA 1363 flies

UA 1363 flies ORD to LAX without a single fixed slot. Its most common scheduled departure was 13:00, used on 136 of 328 flights, with 13:05 (55 flights) next.

Departs 13:00136 flights41.5%
Departs 13:0555 flights16.8%

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 13:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 1363 runs 3 points better at 81.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

UA 1363 next to ORD to LAX

Every carrier on ORD to LAX combined arrived on time 72.0% of the time across 7,121 flights, so UA 1363 is 10 points ahead of it. United flew 3,416 flights on the same city pair under all its flight numbers, including this one, and those ran 76.7% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 3 points.

UA 1363 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1363thin sample	328	81.7%	98 min	0.30%	B+
All United Airlines on ORD–LAX	3,416	76.7%	70 min	0.64%	B+
All carriers on ORD–LAX	7,121	72.0%	75 min	1.33%	C
United Airlines, whole network	830,825	78.8%	73 min	1.02%	B

Across the year

UA 1363 quarter by quarter

UA 1363 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jan–Mar 2026 at 77.5%, a swing of 13 points on roughly 66 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 202530 flights90.0%
Oct–Dec 202555 flights80.0%
Jan–Mar 202690 flights77.5%
Apr–Jun 202691 flights84.6%
Jul–Sep 202662 flights80.6%

Scale runs 70% to 95%.

By weekday, UA 1363 did best on Thursday at 91.5% on time and worst on Monday at 72.3%. Each day rests on about 47 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late UA 1363 runs when it is late

UA 1363 often beats the schedule: 115 of 327 completed flights, 35%, arrived 15 minutes or more early. The 60 late arrivals split 20 under half an hour, 17 between 30 and 60 minutes, and 23 an hour or more.

15+ min early115 flights35.2%
Within 15 min152 flights46.5%
15–29 min late20 flights6.1%
30–59 min late17 flights5.2%
1–2 hours late8 flights2.4%
2+ hours late15 flights4.6%

Scale runs 0% to 100%.

Share of 327 completed flights by arrival against schedule.

A late pushback is often recovered here: of 72 departures that left 15 minutes late or more, 28 still arrived on time. 16 flights left on time and still arrived late.

The worst days

Worst days for UA 1363

The latest arrival of the period was on 7 December 2025, 11 hours 36 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in December 2025.

The latest arrivals of UA 1363 in the period
Date	Arrived late by	Largest filed cause
7 December 2025	11 hours 36 minutes	Late-arriving aircraft
7 March 2026	8 hours 33 minutes	Late-arriving aircraft
2 December 2025	7 hours 26 minutes	Carrier
20 February 2026	4 hours 33 minutes	Carrier
13 December 2025	4 hours 31 minutes	Carrier

Delay causes

Why UA 1363 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,901 reported delay minutes.

Carrier
37%
Late-arriving aircraft
37%
Extreme weather
14%
National Airspace System
12%

Extreme weather accounts for 14% 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 2.4 times the usual weather exposure. The split is drawn from 5,901 delay minutes reported on UA 1363.

Cancellations are rare at 0.30%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

7.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.

At 1,744 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 six other city pairs in the data, including DSM to ORD (209), LAX to SFO (70) and LAX to MRY (46), but none flew often enough under UA 1363 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to LAX only.

One caution: this is a thin sample. 328 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 1363

For a booking, read UA 1363 as 81.7% on time with 0.30% cancelled over 328 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures