Flight number record

UA 2358

United Airlines · Houston to San Francisco

Route: IAH → SFO
Departs: 10:15
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2358, check with United Airlines.

UA 2358 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 365 flights, with a median arrival 4 minutes early.

On time

75.0%

Arrivals under 15 minutes late, of 360 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

1.37%

National rate is 1.81%

1 hour+ late

7.5%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 4 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 2358 flies

UA 2358 flies IAH to SFO without a single fixed slot. Its most common scheduled departure was 10:15, used on 84 of 365 flights, with 09:50 (53 flights) and 10:00 (53 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:1584 flights23.0%
Departs 09:5053 flights14.5%
Departs 10:0053 flights14.5%

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 10:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 2358 runs 9 points worse at 75.0%. 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 2358 next to IAH to SFO

Every carrier on IAH to SFO combined arrived on time 78.6% of the time across 3,600 flights, so UA 2358 is 4 points behind it. Across its whole network United Airlines managed 79.0%, which this flight trails by 4 points.

UA 2358 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2358	365	75.0%	67 min	1.37%	B
All United Airlines on IAH–SFO	3,600	78.6%	66 min	0.47%	B+
All carriers on IAH–SFO	3,600	78.6%	66 min	0.47%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2358 quarter by quarter

UA 2358 did not run the same all year. Its best quarter was Jan–Mar 2026 at 79.5% on time and its weakest Apr–Jun 2026 at 65.6%, a swing of 14 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 flights78.0%
Oct–Dec 202592 flights76.9%
Jan–Mar 202690 flights79.5%
Apr–Jun 202691 flights65.6%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2358 did best on Friday at 86.5% on time and worst on Monday at 67.3%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2358 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 6,019 reported delay minutes.

Late-arriving aircraft
41%
National Airspace System
33%
Carrier
23%
Extreme weather
3%

41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 6,019 reported delay minutes here, that single category outweighs weather by 14 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 6,019 delay minutes reported on UA 2358.

Cancellations sit at 1.37% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

7.5% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

At 1,635 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 IND to IAH (158), MAF to IAH (45) and RSW to IAH (32), but none flew often enough under UA 2358 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to SFO 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 2358

For a booking, read UA 2358 as 75.0% on time with 1.37% 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures