UA2331 · ORD → BOS

United Airlines · Chicago O'Hare to Boston · last 12 months · 123 flights tracked

52.9%on-time

UA2331 ORD→BOS: 52.9% on-time over 123 flights (last 12 months) — below average. It trails the route average (66.6%) by 13.7 points. Best day to fly: Fri (83.3%); worst: Mon (33.3%). Seasonality matters: May is the most reliable month (74.2%), Aug the worst (35.5%). Cancellation rate is 1.6% — have a backup plan. Average arrival delay: 32.7 minutes.

Data: US BTS, last 12 months.

32.7 minavg arrival delay

1.6%cancelled

0diverted

123flights tracked

Arrival delay distribution

Early/on time · 371–60 min · 6061–180 min · 23180+ min · 1

On-time by day of week

Mon

33.3%

Tue

56.2%

Wed

41.2%

Thu

47.1%

Fri

83.3%

Sat

58.8%

Sun

50.0%

On-time by month

100.0%

Apr

74.2%

May

48.3%

Jun

51.7%

Jul

35.5%

Aug

← All flights on ORD–BOS