Flight number record
UA 2615
United Airlines · Portland to San Francisco
- Route
- PDX → SFO
- Departs
- 19:35
- Flights
- 265
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2615, check with United Airlines.
UA 2615 earns an F+, which is as low as this site's scale goes for a reason. Only 52.3% of flights arrive inside the 15-minute window, 25 points worse than the national rate of 77.3%. Late arrivals average about an hour. Treat any tight connection here as a coin flip. That rests on 265 flights, with a median arrival 12 minutes late.
The national on-time rate over the same period is 77.3%, so UA 2615 runs 25 points behind the country as a whole. Across a thousand flights that is about 250 extra late arrivals.
Key figures
On time
52.3%
Arrivals under 15 minutes late, of 264 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.38%
National rate is 1.89%
1 hour+ late
16.7%
National rate is 8.3%
These figures cover 265 flights between September 2025 and August 2026. Beyond the headline rate, 16.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2615 flies
UA 2615 flies PDX to SFO without a single fixed slot. Its most common scheduled departure was 19:35, used on 52 of 265 flights, with 19:45 (39 flights) and 19:38 (36 flights) next.
- Departs 19:3552 flights19.6%
- Departs 19:4539 flights14.7%
- Departs 19:3836 flights13.6%
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 19:35 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 2615 runs 16 points worse at 52.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 2615 next to PDX to SFO
Every carrier on PDX to SFO combined arrived on time 66.8% of the time across 3,495 flights, so UA 2615 is 15 points behind it. United flew 1,729 flights on the same city pair under all its flight numbers, including this one, and those ran 62.9% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 27 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2615thin sample | 265 | 52.3% | 62 min | 0.38% | F+ |
| All United Airlines on PDX–SFO | 1,729 | 62.9% | 58 min | 0.29% | D+ |
| All carriers on PDX–SFO | 3,495 | 66.8% | 57 min | 0.37% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2615 quarter by quarter
UA 2615 did not run the same all year. Its best quarter was Jan–Mar 2026 at 70.4% on time and its weakest Apr–Jun 2026 at 24.5%, a swing of 46 points on roughly 88 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 202529 flights—
- Oct–Dec 202587 flights50.6%
- Jan–Mar 202681 flights70.4%
- Apr–Jun 202650 flights24.5%
- Jul–Sep 202618 flights—
Scale runs 15% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2615 did best on Tuesday at 71.1% on time and worst on Monday at 39.0%. Each day rests on about 38 flights, so a gap of 32 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2615 runs when it is late
The 126 late arrivals split 34 under half an hour, 48 between 30 and 60 minutes, and 44 an hour or more.
- 15+ min early17 flights6.4%
- Within 15 min121 flights45.8%
- 15–29 min late34 flights12.9%
- 30–59 min late48 flights18.2%
- 1–2 hours late31 flights11.7%
- 2+ hours late13 flights4.9%
Scale runs 0% to 100%.
Share of 264 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 104 departures that left 15 minutes late or more, only 6 made it up before arrival. 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 2615
The latest arrival of the period was on 3 January 2026, 3 hours 59 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 January 2026 | 3 hours 59 minutes | Late-arriving aircraft |
| 15 February 2026 | 3 hours 38 minutes | National Airspace System |
| 16 November 2025 | 3 hours 37 minutes | National Airspace System |
| 20 April 2026 | 3 hours 37 minutes | National Airspace System |
| 26 December 2025 | 3 hours 27 minutes | Late-arriving aircraft |
Delay causes
Why UA 2615 runs late
National Airspace System accounts for 56% of the 7,757 delay minutes carriers reported here, and the remaining four split what is left.
- 56%National Airspace System
- 37%Late-arriving aircraft
- 7%Carrier
37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,757 reported delay minutes here, that single category outweighs weather by 37 to one. The split is drawn from 7,757 delay minutes reported on UA 2615.
Cancellations are rare at 0.38%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
16.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 550 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 nine other city pairs in the data, including LAS to SFO (59), SFO to FLL (31) and SFO to BWI (31), but none flew often enough under UA 2615 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PDX to SFO only.
One caution: this is a thin sample. 265 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 2615
For a booking, UA 2615 is a flight to put a long connection behind. 16.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- PDX to SFO, every carrier and departure
- SFO to PDX, the return direction
- Alaska Airlines 526 on the same route57.0%
- Portland International (PDX) 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.