UA2331 · IAD → ORD

United Airlines · Washington Dulles to Chicago O'Hare · last 12 months · 365 flights tracked

79.8%on-time

UA2331 IAD→ORD: 79.8% on-time over 365 flights (last 12 months) — solid. It beats the route average (74.7%) by 5.1 points. Best day to fly: Tue (84.6%); worst: Sun (72.5%). Seasonality matters: Jan is the most reliable month (93.3%), Aug the worst (61.3%). Average arrival delay: 23.7 minutes.

Data: US BTS, last 12 months.

23.7 minavg arrival delay

0.8%cancelled

1diverted

365flights tracked

Arrival delay distribution

Early/on time · 2301–60 min · 9661–180 min · 23180+ min · 12

On-time by day of week

Mon

80.4%

Tue

84.6%

Wed

82.7%

Thu

76.9%

Fri

76.9%

Sat

84.3%

Sun

72.5%

On-time by month

76.7%

Sep

83.9%

Oct

79.3%

Nov

87.1%

Dec

93.3%

Jan

82.1%

Feb

74.2%

Mar

86.7%

Apr

83.9%

May

70.0%

Jun

76.7%

Jul

61.3%

Aug

← All flights on IAD–ORD