UA543 · ORD → SFO

United Airlines · Chicago O'Hare to San Francisco · last 12 months · 180 flights tracked

58.2%on-time

UA543 ORD→SFO: 58.2% on-time over 180 flights (last 12 months) — below average. It trails the route average (66.2%) by 8.0 points. Best day to fly: Sun (76.0%); worst: Mon (34.6%). Seasonality matters: Mar is the most reliable month (85.2%), Jul the worst (48.3%). Cancellation rate is 1.7% — have a backup plan. Average arrival delay: 36.4 minutes.

Data: US BTS, last 12 months.

36.4 minavg arrival delay

1.7%cancelled

0diverted

180flights tracked

Arrival delay distribution

Early/on time · 631–60 min · 8661–180 min · 19180+ min · 9

On-time by day of week

Mon

34.6%

Tue

72.0%

Wed

44.0%

Thu

64.0%

Fri

46.2%

Sat

72.0%

Sun

76.0%

On-time by month

85.2%

Mar

58.6%

Apr

51.6%

May

60.0%

Jun

48.3%

Jul

48.4%

Aug

← All flights on ORD–SFO