Flight number record
UA 2358
United Airlines · Houston to San Francisco
- Route
- IAH → SFO
- Departs
- 09:35
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2358, check with United Airlines.
UA 2358 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 365 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so UA 2358 runs 5 points behind the country as a whole. Across a thousand flights that is about 53 extra late arrivals.
Key figures
On time
72.0%
Arrivals under 15 minutes late, of 361 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.89%
1 hour+ late
6.9%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 2 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 2358 flies
UA 2358 flies IAH to SFO without a single fixed slot. Its most common scheduled departure was 09:35, used on 71 of 365 flights, with 10:00 (53 flights) and 09:50 (53 flights) next.
- Departs 09:3571 flights19.5%
- Departs 10:0053 flights14.5%
- Departs 09:5053 flights14.5%
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 09:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 2358 runs 12 points worse at 72.0%. 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 2358 next to IAH to SFO
Every carrier on IAH to SFO combined arrived on time 78.2% of the time across 3,578 flights, so UA 2358 is 6 points behind it. Across its whole network United Airlines managed 78.8%, which this flight trails by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2358 | 365 | 72.0% | 60 min | 1.10% | C |
| All United Airlines on IAH–SFO | 3,578 | 78.2% | 62 min | 0.42% | B+ |
| All carriers on IAH–SFO | 3,578 | 78.2% | 62 min | 0.42% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2358 quarter by quarter
UA 2358 did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.3% on time and its weakest Jul–Sep 2026 at 58.1%, a swing of 25 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 flights83.3%
- Oct–Dec 202592 flights76.9%
- Jan–Mar 202690 flights79.5%
- Apr–Jun 202691 flights65.6%
- Jul–Sep 202662 flights58.1%
Scale runs 50% to 90%.
By weekday, UA 2358 did best on Saturday at 86.3% on time and worst on Monday at 56.6%. Each day rests on about 52 flights, so a gap of 30 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2358 runs when it is late
The 101 late arrivals split 42 under half an hour, 34 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early71 flights19.7%
- Within 15 min189 flights52.4%
- 15–29 min late42 flights11.6%
- 30–59 min late34 flights9.4%
- 1–2 hours late15 flights4.2%
- 2+ hours late10 flights2.8%
Scale runs 0% to 100%.
Share of 361 completed flights by arrival against schedule.
31 of 104 late departures made up the time and arrived on time, 30% of them. In the other direction, 28 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 SFO.
The worst days
Worst days for UA 2358
The latest arrival of the period was on 7 July 2026, 10 hours 12 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 July 2026 | 10 hours 12 minutes | Late-arriving aircraft |
| 17 August 2026 | 6 hours 45 minutes | Late-arriving aircraft |
| 14 July 2026 | 4 hours 33 minutes | Late-arriving aircraft |
| 16 March 2026 | 4 hours | Late-arriving aircraft |
| 15 May 2026 | 3 hours 29 minutes | Carrier |
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 6,059 reported delay minutes.
- 42%National Airspace System
- 36%Late-arriving aircraft
- 21%Carrier
- 2%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,059 reported delay minutes here, that single category outweighs weather by 20 to one. The split is drawn from 6,059 delay minutes reported on UA 2358.
Cancellations sit at 1.10% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
6.9% 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 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 (189), 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, UA 2358 is one of the weaker ways to fly IAH to SFO: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- IAH to SFO, every carrier and departure
- SFO to IAH, the return direction
- United Airlines 1768 on the same route89.1%
- United Airlines 589 on the same route79.6%
- United Airlines 487 on the same route97.2%
- United Airlines 2611 on the same route76.8%
- United Airlines 1609 on the same route80.7%
- George Bush Intercontinental (IAH) delay statistics
- San Francisco International (SFO) 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
- Why the first flight of the morning is statistically safest
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.