Flight number record
UA 2054
United Airlines · Washington to San Diego
- Route
- IAD → SAN
- Departs
- 17:55
- Flights
- 342
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2054, check with United Airlines.
UA 2054 lands a B+, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 342 flights, with a median arrival 6 minutes early.
Key figures
On time
80.7%
Arrivals under 15 minutes late, of 337 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.88%
National rate is 1.89%
1 hour+ late
7.4%
National rate is 8.3%
These figures cover 342 flights between September 2025 and August 2026. The median arrival is 6 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 2054 flies
UA 2054 flies IAD to SAN without a single fixed slot. Its most common scheduled departure was 17:55, used on 165 of 342 flights, with 18:00 (103 flights) and 17:50 (56 flights) next.
- Departs 17:55165 flights48.2%
- Departs 18:00103 flights30.1%
- Departs 17:5056 flights16.4%
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 17:55 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 2054 runs 13 points better at 80.7%. 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 2054 next to IAD to SAN
Every carrier on IAD to SAN combined arrived on time 82.9% of the time across 1,402 flights, so UA 2054 is 2 points behind it. United flew 1,041 flights on the same city pair under all its flight numbers, including this one, and those ran 86.1% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2054thin sample | 342 | 80.7% | 73 min | 0.88% | B+ |
| All United Airlines on IAD–SAN | 1,041 | 86.1% | 65 min | 0.67% | A+ |
| All carriers on IAD–SAN | 1,402 | 82.9% | 58 min | 0.71% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2054 quarter by quarter
UA 2054 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.4% on time and its weakest Jul–Sep 2026 at 63.3%, a swing of 21 points on roughly 86 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 202586 flights83.5%
- Jan–Mar 202678 flights84.4%
- Apr–Jun 202687 flights83.9%
- Jul–Sep 202662 flights63.3%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2054 did best on Tuesday at 92.2% on time and worst on Sunday at 74.5%. Each day rests on about 49 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2054 runs when it is late
UA 2054 often beats the schedule: 114 of 337 completed flights, 34%, arrived 15 minutes or more early. The 65 late arrivals split 23 under half an hour, 17 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early114 flights33.8%
- Within 15 min158 flights46.9%
- 15–29 min late23 flights6.8%
- 30–59 min late17 flights5.0%
- 1–2 hours late16 flights4.7%
- 2+ hours late9 flights2.7%
Scale runs 0% to 100%.
Share of 337 completed flights by arrival against schedule.
10 of 47 late departures made up the time and arrived on time, 21% 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 SAN.
The worst days
Worst days for UA 2054
The latest arrival of the period was on 7 August 2026, 7 hours 18 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across August, December, June, July and March, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 August 2026 | 7 hours 18 minutes | Carrier |
| 5 December 2025 | 6 hours 17 minutes | Late-arriving aircraft |
| 11 June 2026 | 5 hours 18 minutes | Carrier |
| 4 July 2026 | 4 hours 32 minutes | Extreme weather |
| 15 March 2026 | 3 hours 37 minutes | National Airspace System |
Delay causes
Why UA 2054 runs late
National Airspace System accounts for 44% of the 4,754 delay minutes carriers reported here, and the remaining four split what is left.
- 44%National Airspace System
- 35%Carrier
- 11%Late-arriving aircraft
- 10%Extreme weather
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,666 of the 4,754 delay minutes reported here. The split is drawn from 4,754 delay minutes reported on UA 2054.
Cancellations are rare at 0.88%, 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
7.4% 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 a little over an hour, which a normal layover absorbs.
At 2,253 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 two other city pairs in the data, including RSW to IAD (232) and EWR to RSW (1), but none flew often enough under UA 2054 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAD to SAN only.
One caution: this is a thin sample. 342 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 2054
For a booking, read UA 2054 as 80.7% on time with 0.88% cancelled over 342 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- IAD to SAN, every carrier and departure
- SAN to IAD, the return direction
- United Airlines 1930 on the same route93.9%
- United Airlines 2163 on the same route82.8%
- Washington Dulles International (IAD) delay statistics
- San Diego International (SAN) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.