UA1239 · ATL → ORD

United Airlines · Atlanta to Chicago O'Hare · last 12 months · 82 flights tracked

81.5%on-time

UA1239 ATL→ORD: 81.5% on-time over 82 flights (last 12 months) — solid. It beats the route average (69.0%) by 12.5 points. Best day to fly: Sat (91.7%); worst: Tue (72.7%). Seasonality matters: Aug is the most reliable month (90.0%), May the worst (72.7%). Average arrival delay: 7.3 minutes.

Data: US BTS, last 12 months.

7.3 minavg arrival delay

0.0%cancelled

1diverted

82flights tracked

Arrival delay distribution

Early/on time · 531–60 min · 2661–180 min · 2180+ min · 0

On-time by day of week

Mon

90.9%

Tue

72.7%

Wed

81.8%

Thu

83.3%

Fri

75.0%

Sat

91.7%

Sun

75.0%

On-time by month

72.7%

May

76.7%

Jun

83.9%

Jul

90.0%

Aug

← All flights on ATL–ORD