DL473 · SEA → BOS

Delta Air Lines · Seattle to Boston · last 12 months · 363 flights tracked

83.5%on-time

DL473 SEA→BOS: 83.5% on-time over 363 flights (last 12 months) — solid. It beats the route average (75.1%) by 8.4 points. Best day to fly: Thu (90.2%); worst: Sun (77.6%). Seasonality matters: Jul is the most reliable month (93.3%), Sep the worst (70.0%). Average arrival delay: 8.8 minutes.

Data: US BTS, last 12 months.

8.8 minavg arrival delay

1.4%cancelled

1diverted

363flights tracked

Arrival delay distribution

Early/on time · 2471–60 min · 9961–180 min · 10180+ min · 1

On-time by day of week

Mon

80.8%

Tue

86.0%

Wed

84.6%

Thu

90.2%

Fri

86.3%

Sat

78.8%

Sun

77.6%

On-time by month

70.0%

Sep

90.3%

Oct

85.7%

Nov

80.6%

Dec

75.9%

Jan

77.8%

Feb

83.9%

Mar

76.7%

Apr

90.3%

May

86.2%

Jun

93.3%

Jul

87.1%

Aug

← All flights on SEA–BOS