Flight number record

UA 300

United Airlines · San Francisco to Honolulu

Route: SFO → HNL
Departs: 13:55
Flights: 365
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s UA 300, check with United Airlines.

UA 300 lands a B+, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 365 flights, with a median arrival 6 minutes early.

Set against the rest of the country, UA 300's record is 5 points better than the US average of 77.3%. That gap is worth roughly 49 fewer late arrivals for every thousand flights.

On time

82.2%

Arrivals under 15 minutes late, of 365 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.89%

1 hour+ late

4.7%

National rate is 8.3%

These figures cover 365 flights between September 2025 and August 2026. The median arrival is 6 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 300 flies

UA 300 flies SFO to HNL without a single fixed slot. Its most common scheduled departure was 13:55, used on 224 of 365 flights, with 13:45 (53 flights) and 13:50 (40 flights) next.

Departs 13:55224 flights61.4%
Departs 13:4553 flights14.5%
Departs 13:5040 flights11.0%

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 13:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 300 runs 4 points better at 82.2%. 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 300 next to SFO to HNL

Every carrier on SFO to HNL combined arrived on time 80.0% of the time across 2,477 flights, so UA 300 is 2 points ahead of it. United flew 1,779 flights on the same city pair under all its flight numbers, including this one, and those ran 84.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 3 points.

UA 300 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 300	365	82.2%	56 min	0.00%	B+
All United Airlines on SFO–HNL	1,779	84.5%	63 min	0.11%	B+
All carriers on SFO–HNL	2,477	80.0%	62 min	0.97%	B+
United Airlines, whole network	830,825	78.8%	73 min	1.02%	B

Across the year

UA 300 quarter by quarter

UA 300 did not run the same all year. Its best quarter was Jul–Sep 2025 at 86.7% on time and its weakest Jul–Sep 2026 at 74.2%, a swing of 13 points on roughly 73 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 flights86.7%
Oct–Dec 202592 flights84.8%
Jan–Mar 202690 flights85.6%
Apr–Jun 202691 flights80.2%
Jul–Sep 202662 flights74.2%

Scale runs 65% to 90%.

By weekday, UA 300 ranged from 79.2% on Monday to 86.5% on Thursday. With about 52 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late UA 300 runs when it is late

UA 300 often beats the schedule: 117 of 365 completed flights, 32%, arrived 15 minutes or more early. Most of the lateness is short. 33 of the 65 late arrivals were under half an hour behind, and 17 reached an hour or more.

15+ min early117 flights32.1%
Within 15 min183 flights50.1%
15–29 min late33 flights9.0%
30–59 min late15 flights4.1%
1–2 hours late8 flights2.2%
2+ hours late9 flights2.5%

Scale runs 0% to 100%.

Share of 365 completed flights by arrival against schedule.

A late pushback is often recovered here: of 85 departures that left 15 minutes late or more, 41 still arrived on time. In the other direction, 21 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 HNL.

The worst days

Worst days for UA 300

The latest arrival of the period was on 9 October 2025, 3 hours 58 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.

The latest arrivals of UA 300 in the period
Date	Arrived late by	Largest filed cause
9 October 2025	3 hours 58 minutes	Late-arriving aircraft
16 December 2025	3 hours 55 minutes	Carrier
15 May 2026	3 hours 44 minutes	Late-arriving aircraft
16 March 2026	3 hours 9 minutes	Late-arriving aircraft
12 October 2025	3 hours 6 minutes	Carrier

Delay causes

Why UA 300 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 3,647 reported delay minutes.

Late-arriving aircraft
40%
Carrier
40%
National Airspace System
20%

40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,647 reported delay minutes here, that single category outweighs weather by 40 to one. The split is drawn from 3,647 delay minutes reported on UA 300.

Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.3% 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 2,398 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 one other city pair in the data, including ATL to SFO (3), but none flew often enough under UA 300 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to HNL only.

One caution: this is a thin sample. 365 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 300

For a booking, read UA 300 as 82.2% on time with 0.00% cancelled over 365 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