AA1239 · BOS → ORD

American Airlines · Boston to Chicago O'Hare · last 12 months · 165 flights tracked

91.4%on-time

AA1239 BOS→ORD: 91.4% on-time over 165 flights (last 12 months) — excellent. It beats the route average (71.9%) by 19.5 points. Best day to fly: Fri (100.0%); worst: Sun (78.3%). Seasonality matters: Jun is the most reliable month (96.7%), Aug the worst (83.9%). Average arrival delay: 12.9 minutes.

Data: US BTS, last 12 months.

12.9 minavg arrival delay

1.2%cancelled

1diverted

165flights tracked

Arrival delay distribution

Early/on time · 1291–60 min · 2461–180 min · 7180+ min · 2

On-time by day of week

Mon

87.5%

Tue

95.5%

Wed

90.9%

Thu

95.8%

Fri

100.0%

Sat

91.3%

Sun

78.3%

On-time by month

90.0%

Sep

87.1%

Oct

100.0%

Nov

90.9%

May

96.7%

Jun

96.6%

Jul

83.9%

Aug

← All flights on BOS–ORD