Flight number record
UA 1330
United Airlines · Newark to Seattle
- Route
- EWR → SEA
- Departs
- 08:50
- Flights
- 332
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1330, check with United Airlines.
UA 1330 lands a B, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That rests on 332 flights, with a median arrival 6 minutes early.
Key figures
On time
78.2%
Arrivals under 15 minutes late, of 326 completed flights
Avg delay
47 min
Across delayed arrivals only, not all flights
Cancelled
1.51%
National rate is 1.89%
1 hour+ late
5.5%
National rate is 8.3%
These figures cover 332 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When UA 1330 flies
UA 1330 flies EWR to SEA without a single fixed slot. Its most common scheduled departure was 08:50, used on 75 of 332 flights, with 07:45 (53 flights) and 07:59 (39 flights) next.
- Departs 08:5075 flights22.6%
- Departs 07:4553 flights16.0%
- Departs 07:5939 flights11.7%
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 08:50 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1330 runs 6 points worse at 78.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 1330 next to EWR to SEA
Every carrier on EWR to SEA combined arrived on time 72.9% of the time across 2,263 flights, so UA 1330 is 5 points ahead of it. United flew 990 flights on the same city pair under all its flight numbers, including this one, and those ran 74.5% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1330thin sample | 332 | 78.2% | 47 min | 1.51% | B |
| All United Airlines on EWR–SEA | 990 | 74.5% | 70 min | 1.82% | C |
| All carriers on EWR–SEA | 2,263 | 72.9% | 71 min | 2.39% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1330 quarter by quarter
UA 1330 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.8% on time and its weakest Jan–Mar 2026 at 72.1%, a swing of 16 points on roughly 83 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 20256 flights—
- Oct–Dec 202592 flights72.5%
- Jan–Mar 202690 flights72.1%
- Apr–Jun 202682 flights87.8%
- Jul–Sep 202662 flights80.3%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1330 did best on Wednesday at 86.7% on time and worst on Monday at 69.6%. Each day rests on about 47 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1330 runs when it is late
UA 1330 often beats the schedule: 104 of 326 completed flights, 32%, arrived 15 minutes or more early. The 71 late arrivals split 30 under half an hour, 23 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early104 flights31.9%
- Within 15 min151 flights46.3%
- 15–29 min late30 flights9.2%
- 30–59 min late23 flights7.1%
- 1–2 hours late14 flights4.3%
- 2+ hours late4 flights1.2%
Scale runs 0% to 100%.
Share of 326 completed flights by arrival against schedule.
11 of 40 late departures made up the time and arrived on time, 28% of them. In the other direction, 42 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 SEA.
The worst days
Worst days for UA 1330
The latest arrival of the period was on 22 December 2025, 3 hours 31 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across December, July, November and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 22 December 2025 | 3 hours 31 minutes | Late-arriving aircraft |
| 4 July 2026 | 3 hours 6 minutes | National Airspace System |
| 10 November 2025 | 2 hours 10 minutes | Late-arriving aircraft |
| 17 February 2026 | 2 hours 4 minutes | Carrier |
| 14 December 2025 | 1 hour 50 minutes | National Airspace System |
Delay causes
Why UA 1330 runs late
National Airspace System accounts for 58% of the 3,319 delay minutes carriers reported here, and the remaining four split what is left.
- 58%National Airspace System
- 21%Late-arriving aircraft
- 20%Carrier
- 1%Extreme weather
58% 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 1,932 minutes out of 3,319, against a national NAS share of 21%. The split is drawn from 3,319 delay minutes reported on UA 1330.
Cancellations sit at 1.51% against a national 1.89%, which is ordinary. Diversions add another 0.30%.
Connections and routes
What a delay on this flight costs
5.5% 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 roughly 45 minutes, which a normal layover absorbs.
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 four other city pairs in the data, including SEA to SFO (31), EWR to LAX (23) and SAV to EWR (20), but none flew often enough under UA 1330 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to SEA only.
One caution: this is a thin sample. 332 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 1330
For a booking, read UA 1330 as 78.2% on time with 1.51% cancelled over 332 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- EWR to SEA, every carrier and departure
- SEA to EWR, the return direction
- Alaska Airlines 462 on the same route68.8%
- Alaska Airlines 299 on the same route74.7%
- Newark Liberty International (EWR) delay statistics
- Seattle-Tacoma International (SEA) 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.