DL821 · ATL → BOS

Delta Air Lines · Atlanta to Boston · last 12 months · 349 flights tracked

69.2%on-time

DL821 ATL→BOS: 69.2% on-time over 349 flights (last 12 months) — average. It trails the route average (72.8%) by 3.6 points. Best day to fly: Fri (76.5%); worst: Sun (61.4%). Seasonality matters: Jan is the most reliable month (86.2%), Jul the worst (48.4%). Average arrival delay: 21.8 minutes.

Data: US BTS, last 12 months.

21.8 minavg arrival delay

1.4%cancelled

0diverted

349flights tracked

Arrival delay distribution

Early/on time · 1591–60 min · 14361–180 min · 37180+ min · 5

On-time by day of week

Mon

68.0%

Tue

68.0%

Wed

72.0%

Thu

65.3%

Fri

76.5%

Sat

72.0%

Sun

61.4%

On-time by month

65.0%

Sep

60.0%

Oct

75.0%

Nov

67.7%

Dec

86.2%

Jan

73.1%

Feb

71.0%

Mar

70.0%

Apr

64.5%

May

76.7%

Jun

48.4%

Jul

74.1%

Aug

← All flights on ATL–BOS