Flight number record
UA 2374
United Airlines · San Francisco to Phoenix
- Route
- SFO → PHX
- Departs
- 07:00
- Flights
- 252
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2374, check with United Airlines.
UA 2374 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 45 minutes. That rests on 252 flights, with a median arrival 10 minutes early.
Set against the rest of the country, UA 2374's record is 14 points better than the US average of 77.3%. That gap is worth roughly 135 fewer late arrivals for every thousand flights.
Key figures
On time
90.8%
Arrivals under 15 minutes late, of 249 completed flights
Avg delay
44 min
Across delayed arrivals only, not all flights
Cancelled
1.19%
National rate is 1.89%
1 hour+ late
1.6%
National rate is 8.3%
These figures cover 252 flights between September 2025 and August 2026. The median arrival is 10 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 2374 flies
UA 2374 flies SFO to PHX without a single fixed slot. Its most common scheduled departure was 07:00, used on 65 of 252 flights, with 08:04 (34 flights) next.
- Departs 07:0065 flights25.8%
- Departs 08:0434 flights13.5%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 2374 runs level with that at 90.8%. 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 2374 next to SFO to PHX
Every carrier on SFO to PHX combined arrived on time 72.8% of the time across 4,727 flights, so UA 2374 is 18 points ahead of it. United flew 1,488 flights on the same city pair under all its flight numbers, including this one, and those ran 79.9% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2374thin sample | 252 | 90.8% | 44 min | 1.19% | A |
| All United Airlines on SFO–PHX | 1,488 | 79.9% | 59 min | 0.40% | B+ |
| All carriers on SFO–PHX | 4,727 | 72.8% | 74 min | 0.72% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2374 quarter by quarter
Quarter by quarter UA 2374 held fairly steady: 90.3% in Oct–Dec 2025, 94.7% in Jan–Mar 2026 and 93.9% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20256 flights—
- Oct–Dec 202575 flights90.3%
- Jan–Mar 202676 flights94.7%
- Apr–Jun 202666 flights93.9%
- Jul–Sep 202629 flights—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2374 ranged from 86.1% on Sunday to 93.3% on Saturday. With about 36 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 2374 runs when it is late
UA 2374 often beats the schedule: 82 of 249 completed flights, 33%, arrived 15 minutes or more early. The 23 late arrivals split 11 under half an hour, 8 between 30 and 60 minutes, and 4 an hour or more.
- 15+ min early82 flights32.9%
- Within 15 min144 flights57.8%
- 15–29 min late11 flights4.4%
- 30–59 min late8 flights3.2%
- 1–2 hours late3 flights1.2%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 249 completed flights by arrival against schedule.
Only 10 of 249 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for UA 2374
The latest arrival of the period was on 26 February 2026, 2 hours 47 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.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 February 2026 | 2 hours 47 minutes | Late-arriving aircraft |
| 14 August 2026 | 1 hour 55 minutes | Late-arriving aircraft |
| 13 October 2025 | 1 hour 5 minutes | National Airspace System |
| 28 May 2026 | 1 hour 4 minutes | National Airspace System |
| 29 June 2026 | 56 minutes | Late-arriving aircraft |
Delay causes
Why UA 2374 runs late
National Airspace System accounts for 57% of the 1,016 delay minutes carriers reported here, and the remaining four split what is left.
- 57%National Airspace System
- 29%Late-arriving aircraft
- 15%Carrier
57% 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 575 minutes out of 1,016, against a national NAS share of 21%. The split is drawn from 1,016 delay minutes reported on UA 2374.
Cancellations sit at 1.19% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 1.6% 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.
The 651 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on seven other city pairs in the data, including PHX to DEN (31), EWR to SEA (24) and ORD to EWR (23), but none flew often enough under UA 2374 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to PHX only.
One caution: this is a thin sample. 252 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 2374
For a booking, UA 2374 has one of the better records a US domestic flight can show: 90.8% on time and 1.19% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SFO to PHX, every carrier and departure
- PHX to SFO, the return direction
- SkyWest Airlines 6404 on the same route90.7%
- San Francisco International (SFO) delay statistics
- Phoenix Sky Harbor International (PHX) 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
- Late aircraft, weather, or the airline: what actually causes US flight delays
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.