UA543: United flight 543
Buffalo (BUF) → Chicago (ORD) · departs 6:30a, lands 7:33a local · Mon, Tue, Wed, Thu, Fri, Sun
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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UA543 timetable
Published departure and arrival times, each in its airport's local time, from the flights we sampled.
| Route | Departs | Arrives | Scheduled | Days |
|---|---|---|---|---|
| BUF → ORDBuffalo to Chicago | 6:00a | 7:03a | 2h3m | Sat |
| BUF → ORDBuffalo to Chicago | 6:30a | 7:33a | 2h3m | Mon, Tue, Wed, Thu, Fri, Sun |
| ORD → SFOChicago to San Francisco | 10:25a | 1:30p | 5h5m | Daily |
Other nonstops from Buffalo to Chicago
The departures either side of UA543. Times are Buffalo time.
| Flight | Departs | Days |
|---|---|---|
| This flight UA543 | 6:30a | Mon, Tue, Wed, Thu, Fri, Sun |
| American AA1195 | 8:00a | Daily |
| United | 10:30a | Daily |
| American | 11:26a | Daily |
All 9 flights from BUF to ORD, by time →
Flying back from Chicago
United flies Chicago to Buffalo nonstop 28 times a week, from 6:29a to 5:51p: 2:18p UA2226 · 5:51p UA1335 · every nonstop ORD → BUF →
How UA543 ran in our sample
BUF → ORD
6 of 7 departures left within 15 minutes of schedule (Oct 25–31). Only flights that departed are counted: cancellations are not in our data.
Aircraft: Boeing 737-700 on 6 of 7; also Airbus A320 (1).
ORD → SFO
5 of 7 departures left within 15 minutes of schedule (Oct 25–31). Only flights that departed are counted: cancellations are not in our data.
Aircraft: Boeing 737 MAX 9 on 5 of 7; also Boeing 737-900 (2).
Other flights on this route: UA246 · AA2885 · UA1116 · AA3115 · UA2610 · AA1948 · UA762 · UA638 · AA2253 · UA1811 · UA1577 · AA1253 · UA2417 · AA3141 · UA649 · AA1954 · UA2059 · AA2158 · UA2106 · all of them →
What time does UA543 leave Buffalo?
UA543 is scheduled to depart Buffalo (BUF) at 6:00a (Sat), 6:30a (Mon, Tue, Wed, Thu, Fri, Sun), Buffalo time, and to land in Chicago (ORD) at about 7:03a local time, a scheduled 2h3m. Times are the published ones from the flights we sampled Oct 25–31; check United for today's.
What time does UA543 leave Chicago?
UA543 is scheduled to depart Chicago (ORD) at 10:25a (daily), Chicago time, and to land in San Francisco (SFO) at about 1:30p local time, a scheduled 5h5m. Times are the published ones from the flights we sampled Oct 25–31; check United for today's.
What plane is UA543?
Boeing 737-700 on 6 of the 7 UA543 flights from BUF we sampled Oct 25–31; the rest were a Airbus A320. Airlines swap aircraft, so the plane on a given day can differ.
Does UA543 fly every day?
Yes — UA543 flew Buffalo to Chicago every day of the week we sampled (Oct 25–31).
Is UA543 usually on time?
Of 7 UA543 departures from BUF we sampled Oct 25–31, 6 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 Buffalo
Timetable from United departures we observed; UA543 is a United Airlines flight number, and Hop Nonstop is not affiliated with United. Schedules change — confirm with the airline before you travel.