UA543 · UAL543

Schedule for today and the next days

• 2026-10-27 10:25 · Chicago O'Hare International Airport (ORD/KORD) → San Francisco International Airport (SFO/KSFO)

Scheduled times from airport boards, in local time. Actual departures and arrivals are measured by the map.flights network. Letištní tabule: Airport Authority Hong Kong / DATA.GOV.HK, Dubai Airports, Chicago Department of Aviation, Hobart Airport, Wellington Airport, Hamad International Airport

UAL543 over the last 30 days

As of 2026-10-26

UAL543 is operated by United Airlines on the route Buffalo Niagara International Airport (BUF/KBUF) → Chicago O'Hare International Airport (ORD/KORD). It usually takes off around 11:10 UTC (07:10 local time, BUF). It usually lands around 12:31 UTC (07:31 local time, ORD). Most frequent aircraft type: BOEING 737-900 (B739).

Days with an observed flight (last 30 days)

29/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sat, Sun

Typical take-off

11:10 UTC · 07:10 local time (BUF)

Typical landing

12:31 UTC · 07:31 local time (ORD)

Typical time airborne

80 min

Median departure deviation from the usual time on this route

+1 min

Departures within 15 minutes of the usual time

85 %

Departures measured

72

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737-900 (B739) — Number of flights: 36
• AIRBUS A-320 (A320) — Number of flights: 28
• BOEING 737 MAX 9 (B39M) — Number of flights: 4

Aircraft in the last 7 days

• N28457 · BOEING 737-900 2026-10-26
• N37516 · BOEING 737 MAX 9 2026-10-26
• N14704 · BOEING 737-700 2026-10-26
• N17461 · BOEING 737 MAX 9 2026-10-25
• N475UA · AIRBUS A-320 2026-10-25
• N14504 · AIRBUS A-321neo 2026-10-24

Related flights on this route

• All flights KBUF – KORD