DL400 · SFO → BOS

Delta Air Lines · San Francisco to Boston · last 12 months · 364 flights tracked

88.5%on-time

DL400 SFO→BOS: 88.5% on-time over 364 flights (last 12 months) — excellent. It beats the route average (74.5%) by 14.0 points. Seasonality matters: Mar is the most reliable month (100.0%), Sep the worst (70.0%). Cancellation rate is 1.9% — have a backup plan. Average arrival delay: 10.5 minutes.

Data: US BTS, last 12 months.

10.5 minavg arrival delay

1.9%cancelled

1diverted

364flights tracked

Arrival delay distribution

Early/on time · 2521–60 min · 9361–180 min · 5180+ min · 6

On-time by day of week

Mon

86.3%

Tue

90.2%

Wed

86.5%

Thu

90.0%

Fri

92.2%

Sat

86.0%

Sun

88.2%

On-time by month

70.0%

Sep

70.0%

Oct

86.2%

Nov

96.8%

Dec

92.9%

Jan

88.9%

Feb

100.0%

Mar

93.3%

Apr

93.5%

May

86.2%

Jun

90.3%

Jul

90.0%

Aug

← All flights on SFO–BOS