UA1147 · IAD → SFO

United Airlines · Washington Dulles to San Francisco · last 12 months · 236 flights tracked

83.8%on-time

UA1147 IAD→SFO: 83.8% on-time over 236 flights (last 12 months) — solid. It beats the route average (77.5%) by 6.3 points. Best day to fly: Sat (88.2%); worst: Mon (75.8%). Seasonality matters: Mar is the most reliable month (96.3%), Jun the worst (70.0%). Average arrival delay: 10.9 minutes.

Data: US BTS, last 12 months.

10.9 minavg arrival delay

0.8%cancelled

0diverted

236flights tracked

Arrival delay distribution

Early/on time · 1431–60 min · 8361–180 min · 7180+ min · 1

On-time by day of week

Mon

75.8%

Tue

87.9%

Wed

87.9%

Thu

82.4%

Fri

85.3%

Sat

88.2%

Sun

78.8%

On-time by month

71.4%

Dec

89.7%

Jan

81.8%

Feb

96.3%

Mar

90.0%

Apr

74.2%

May

70.0%

Jun

90.3%

Jul

83.9%

Aug

← All flights on IAD–SFO