UA2121 · SEA → SFO

United Airlines · Seattle to San Francisco · last 12 months · 53 flights tracked

13.5%on-time

UA2121 SEA→SFO: 13.5% on-time over 53 flights (last 12 months) — below average. It trails the route average (59.8%) by 46.3 points. Best day to fly: Sun (25.0%); worst: Mon (0.0%). Cancellation rate is 1.9% — have a backup plan. Average arrival delay: 63.1 minutes.

Data: US BTS, last 12 months.

63.1 minavg arrival delay

1.9%cancelled

0diverted

53flights tracked

Arrival delay distribution

Early/on time · 31–60 min · 2961–180 min · 17180+ min · 3

On-time by day of week

Mon

0.0%

Tue

12.5%

Wed

12.5%

Thu

14.3%

Fri

0.0%

Sat

28.6%

Sun

25.0%

On-time by month

0.0%

Mar

13.3%

Apr

15.8%

May

← All flights on SEA–SFO