Flight number record
UA 2374
United Airlines · San Francisco to Phoenix
- Route
- SFO → PHX
- Departs
- 07:00
- Flights
- 272
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 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 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 45 minutes. That rests on 272 flights, with a median arrival 9 minutes early.
Set against the rest of the country, UA 2374's record is 12 points better than the US average of 77.6%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.
Key figures
On time
89.6%
Arrivals under 15 minutes late, of 268 completed flights
Avg delay
46 min
Across delayed arrivals only, not all flights
Cancelled
1.47%
National rate is 1.81%
1 hour+ late
1.9%
National rate is 8.1%
These figures cover 272 flights between July 2025 and June 2026. The median arrival is 9 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 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 272 flights, with 08:55 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 07:0065 flights23.9%
- Departs 08:5549 flights18.0%
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 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 89.6%. 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 2374 next to SFO to PHX
Every carrier on SFO to PHX combined arrived on time 74.4% of the time across 4,643 flights, so UA 2374 is 15 points ahead of it. United flew 1,443 flights on the same city pair under all its flight numbers, including this one, and those ran 81.0% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2374thin sample | 272 | 89.6% | 46 min | 1.47% | A |
| All United Airlines on SFO–PHX | 1,443 | 81.0% | 59 min | 0.49% | B+ |
| All carriers on SFO–PHX | 4,643 | 74.4% | 75 min | 0.78% | C+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2374 quarter by quarter
UA 2374 did not run the same all year. Its best quarter was Jan–Mar 2026 at 94.7% on time and its weakest Jul–Sep 2025 at 75.9%, a swing of 19 points on roughly 68 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 202555 flights75.9%
- Oct–Dec 202575 flights90.3%
- Jan–Mar 202676 flights94.7%
- Apr–Jun 202666 flights93.9%
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2374 ranged from 83.7% on Thursday to 94.1% on Wednesday. With about 39 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why UA 2374 runs late
One category carries most of the weight here. National Airspace System accounts for 44% of the 1,275 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 44%National Airspace System
- 29%Carrier
- 27%Late-arriving aircraft
44% 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 555 minutes out of 1,275, against a national NAS share of 21%. The split is drawn from 1,275 delay minutes reported on UA 2374.
Cancellations sit at 1.47% against a national 1.81%, 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 1.9% land an hour or more behind schedule, against 8.1% 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on six other city pairs in the data, including EWR to SEA (37), PHX to DEN (31) 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. 272 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: 89.6% on time and 1.47% 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 route90.3%
- 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
- Worst months to fly in the US, ranked by the data
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.