UA1557 · SFO → ORD

United Airlines · San Francisco to Chicago O'Hare · last 12 months · 111 flights tracked

66.4%on-time

UA1557 SFO→ORD: 66.4% on-time over 111 flights (last 12 months) — average. It trails the route average (75.0%) by 8.6 points. Best day to fly: Fri (86.7%); worst: Wed (50.0%). Seasonality matters: Dec is the most reliable month (76.5%), Feb the worst (57.1%). Average arrival delay: 22.8 minutes.

Data: US BTS, last 12 months.

22.8 minavg arrival delay

0.9%cancelled

0diverted

111flights tracked

Arrival delay distribution

Early/on time · 421–60 min · 5861–180 min · 7180+ min · 3

On-time by day of week

Mon

62.5%

Tue

70.6%

Wed

50.0%

Thu

66.7%

Fri

86.7%

Sat

66.7%

Sun

62.5%

On-time by month

83.3%

Oct

69.0%

Nov

76.5%

Dec

61.5%

Jan

57.1%

Feb

75.0%

Mar

← All flights on SFO–ORD