UA1129 · IAD → SFO

United Airlines · Washington Dulles to San Francisco · last 12 months · 138 flights tracked

75.0%on-time

UA1129 IAD→SFO: 75.0% on-time over 138 flights (last 12 months) — solid. It trails the route average (77.5%) by 2.5 points. Best day to fly: Mon (78.3%); worst: Wed (64.3%). Seasonality matters: Feb is the most reliable month (81.8%), Dec the worst (67.9%). Average arrival delay: 17.6 minutes.

Data: US BTS, last 12 months.

17.6 minavg arrival delay

0.7%cancelled

1diverted

138flights tracked

Arrival delay distribution

Early/on time · 731–60 min · 5161–180 min · 11180+ min · 1

On-time by day of week

Mon

78.3%

Tue

75.0%

Wed

64.3%

Thu

76.2%

Fri

73.9%

Sat

76.5%

Sun

77.3%

On-time by month

78.9%

Sep

69.0%

Oct

80.0%

Nov

67.9%

Dec

76.7%

Jan

81.8%

Feb

← All flights on IAD–SFO