AS521 · SJC → SEA

Alaska Airlines · SJC to Seattle · last 12 months · 70 flights tracked

75.4%on-time

AS521 SJC→SEA: 75.4% on-time over 70 flights (last 12 months) — solid. It trails the route average (82.7%) by 7.3 points. Best day to fly: Tue (90.0%); worst: Thu (40.0%). Seasonality matters: Aug is the most reliable month (83.3%), Jul the worst (71.0%). Average arrival delay: 13.5 minutes.

Data: US BTS, last 12 months.

13.5 minavg arrival delay

1.4%cancelled

0diverted

70flights tracked

Arrival delay distribution

Early/on time · 371–60 min · 2861–180 min · 3180+ min · 1

On-time by day of week

Mon

77.8%

Tue

90.0%

Wed

70.0%

Thu

40.0%

Fri

90.0%

Sat

90.0%

Sun

70.0%

On-time by month

75.0%

Jun

71.0%

Jul

83.3%

Aug

← All flights on SJC–SEA