UA1523: United flight 1523
Seattle (SEA) → Washington (IAD) · departs 8:25a, lands 4:31p local · Daily
The timetable below has every scheduled departure; for today's flight, check United.
An estimate from the published timetable, not live tracking: it cannot know about delays, diversions or cancellations.
Live status at United →The route
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UA1523 timetable
Published departure and arrival times, each in its airport's local time, from the flights we sampled Oct 14–20.
| Route | Departs | Arrives | Scheduled | Days |
|---|---|---|---|---|
| SEA → IADSeattle to Washington | 8:25a | 4:31p | 5h6m | Daily |
Other nonstops from Seattle to Washington
The departures either side of UA1523. Times are Seattle time.
| Flight | Departs | Days |
|---|---|---|
| Alaska AS737 | 8:15a | Daily |
| This flight UA1523 | 8:25a | Daily |
| Delta DL541 | 2:50p | Daily |
| Alaska AS366 | 3:56p | Daily |
| Alaska AS367 | 9:36p | Mon, Thu, Fri, Sun |
All 7 flights from SEA to IAD, by time →
Flying back from Washington
United flies Washington to Seattle nonstop 14 times a week, from 1:05p to 5:45p: 1:05p UA1824 · 5:45p UA1128 · every nonstop IAD → SEA →
How UA1523 ran in our sample
7 of 7 departures left within 15 minutes of schedule (Oct 14–20). Only flights that departed are counted: cancellations are not in our data.
Aircraft: Boeing 737 MAX 9 on 7 of 7.
What time does UA1523 leave Seattle?
UA1523 is scheduled to depart Seattle (SEA) at 8:25a (daily), Seattle time, and to land in Washington (IAD) at about 4:31p local time, a scheduled 5h6m. Times are the published ones from the flights we sampled Oct 14–20; check United for today's.
What plane is UA1523?
Boeing 737 MAX 9 on 7 of the 7 UA1523 flights from SEA we sampled Oct 14–20. Airlines swap aircraft, so the plane on a given day can differ.
Does UA1523 fly every day?
Yes — UA1523 flew Seattle to Washington every day of the week we sampled (Oct 14–20).
Is UA1523 usually on time?
Of 7 UA1523 departures from SEA we sampled Oct 14–20, 7 left within 15 minutes of the scheduled time. That counts only flights that departed — cancellations are not in our data — and one week is a small sample, so treat it as a hint, not a rating.
More United flights from Seattle
Timetable from United departures we observed; UA1523 is a United Airlines flight number, and Hop Nonstop is not affiliated with United. Schedules change — confirm with the airline before you travel.