UA421: United flight 421
Denver (DEN) → Washington (IAD) · departs 3:45p, lands 9:11p 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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UA421 timetable
Published departure and arrival times, each in its airport's local time, from the flights we sampled.
| Route | Departs | Arrives | Scheduled | Days |
|---|---|---|---|---|
| DEN → IADDenver to Washington | 3:45p | 9:11p | 3h26m | Daily |
| IAD → ORDWashington Dulles to Chicago | 10:18p | 11:32p | 2h14m | Mon–Sat |
| IAD → ORDWashington Dulles to Chicago | 10:29p | 11:43p | 2h14m | Sun |
Other nonstops from Denver to Washington
The departures either side of UA421. Times are Denver time.
| Flight | Departs | Days |
|---|---|---|
| United UA2087 | 10:20a | Daily |
| United UA2853 | 12:09p | Daily |
| United UA347 | 1:58p | Daily |
| This flight UA421 | 3:45p | Daily |
| United UA2408 | 5:56p | Daily |
| United UA1924 | 11:52p | Daily |
All 9 flights from DEN to IAD, by time →
Flying back from Washington
United flies Washington to Denver nonstop 53 times a week, from 6:35a to 10:34p: 6:35a UA1561 · 12:40p UA1587 · 2:43p UA1126 · 5:27p UA599 · 10:34p UA495 · every nonstop IAD → DEN →
How UA421 ran in our sample
DEN → IAD
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: Airbus A321neo on 7 of 7.
IAD → ORD
7 of 7 departures left within 15 minutes of schedule (Oct 15–21). Only flights that departed are counted: cancellations are not in our data.
Aircraft: Airbus A321neo on 6 of 7; also Boeing 737-900 (1).
Other flights on this route: UA2691 · UA1775 · UA1252 · UA2331 · UA1703 · UA2497 · all of them →
What time does UA421 leave Denver?
UA421 is scheduled to depart Denver (DEN) at 3:45p (daily), Denver time, and to land in Washington (IAD) at about 9:11p local time, a scheduled 3h26m. Times are the published ones from the flights we sampled Oct 14–20; check United for today's.
What time does UA421 leave Washington Dulles?
UA421 is scheduled to depart Washington Dulles (IAD) at 10:18p (Mon–Sat), 10:29p (Sun), Washington Dulles time, and to land in Chicago (ORD) at about 11:32p local time, a scheduled 2h14m. Times are the published ones from the flights we sampled Oct 15–21; check United for today's.
What plane is UA421?
Airbus A321neo on 7 of the 7 UA421 flights from DEN we sampled Oct 14–20. Airlines swap aircraft, so the plane on a given day can differ.
Does UA421 fly every day?
Yes — UA421 flew Denver to Washington every day of the week we sampled (Oct 14–20).
Is UA421 usually on time?
Of 7 UA421 departures from DEN 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 Denver
Timetable from United departures we observed; UA421 is a United Airlines flight number, and Hop Nonstop is not affiliated with United. Schedules change — confirm with the airline before you travel.