Flight number record
UA 341
United Airlines · Seattle to Newark
- Route
- SEA → EWR
- Departs
- 22:46
- Flights
- 253
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 341, check with United Airlines.
UA 341 lands a B, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 253 flights, with a median arrival 11 minutes early.
Key figures
On time
77.2%
Arrivals under 15 minutes late, of 250 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
1.19%
National rate is 1.81%
1 hour+ late
9.6%
National rate is 8.1%
These figures cover 253 flights between July 2025 and June 2026. Beyond the headline rate, 9.6% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When UA 341 flies
UA 341 flies SEA to EWR without a single fixed slot. Its most common scheduled departure was 22:46, used on 49 of 253 flights, with 23:10 (33 flights) and 23:45 (31 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 22:4649 flights19.4%
- Departs 23:1033 flights13.0%
- Departs 23:4531 flights12.3%
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 22:46 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and UA 341 runs 7 points better at 77.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
UA 341 next to SEA to EWR
Every carrier on SEA to EWR combined arrived on time 81.2% of the time across 2,235 flights, so UA 341 is 4 points behind it. United flew 997 flights on the same city pair under all its flight numbers, including this one, and those ran 81.4% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 341thin sample | 253 | 77.2% | 72 min | 1.19% | B |
| All United Airlines on SEA–EWR | 997 | 81.4% | 88 min | 1.10% | B |
| All carriers on SEA–EWR | 2,235 | 81.2% | 69 min | 1.74% | B |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 341 quarter by quarter
UA 341 did not run the same all year. Its best quarter was Jan–Mar 2026 at 97.1% on time and its weakest Apr–Jun 2026 at 71.4%, a swing of 26 points on roughly 63 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 202592 flights71.4%
- Oct–Dec 202589 flights77.5%
- Jan–Mar 202637 flights97.1%
- Apr–Jun 202635 flights71.4%
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 341 did best on Thursday at 83.3% on time and worst on Sunday at 69.4%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 341 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 4,086 reported delay minutes.
- 39%Late-arriving aircraft
- 36%Carrier
- 23%National Airspace System
- 3%Extreme weather
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,086 reported delay minutes here, that single category outweighs weather by 15 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,086 delay minutes reported on UA 341.
Cancellations sit at 1.19% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.6% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
At 2,402 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 eleven other city pairs in the data, including ORD to SEA (41), LAX to AUS (37) and SAN to LAX (18), but none flew often enough under UA 341 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SEA to EWR only.
One caution: this is a thin sample. 253 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 341
For a booking, read UA 341 as 77.2% on time with 1.19% cancelled over 253 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to EWR, every carrier and departure
- EWR to SEA, the return direction
- Alaska Airlines 477 on the same route71.9%
- Alaska Airlines 298 on the same route88.2%
- Seattle-Tacoma International (SEA) delay statistics
- Newark Liberty International (EWR) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.