DL491 · JFK → SEA

Delta Air Lines · New York JFK to Seattle · last 12 months · 108 flights tracked

86.8%on-time

DL491 JFK→SEA: 86.8% on-time over 108 flights (last 12 months) — excellent. It beats the route average (69.5%) by 17.3 points. Best day to fly: Wed (93.8%); worst: Thu (80.0%). Seasonality matters: Oct is the most reliable month (93.5%), Dec the worst (62.5%). Cancellation rate is 1.9% — have a backup plan. Average arrival delay: 11.7 minutes.

Data: US BTS, last 12 months.

11.7 minavg arrival delay

1.9%cancelled

0diverted

108flights tracked

Arrival delay distribution

Early/on time · 721–60 min · 2861–180 min · 4180+ min · 2

On-time by day of week

Mon

86.7%

Tue

81.2%

Wed

93.8%

Thu

80.0%

Fri

93.3%

Sat

80.0%

Sun

92.9%

On-time by month

93.3%

Sep

93.5%

Oct

86.2%

Nov

62.5%

Dec

← All flights on JFK–SEA