WN4531 · IAD → DEN

Southwest Airlines · Washington Dulles to Denver · last 12 months · 53 flights tracked

80.8%on-time

WN4531 IAD→DEN: 80.8% on-time over 53 flights (last 12 months) — solid. It trails the route average (83.1%) by 2.3 points. Best day to fly: Tue (88.9%); worst: Fri (62.5%). Cancellation rate is 1.9% — have a backup plan. Average arrival delay: 9.0 minutes.

Data: US BTS, last 12 months.

9.0 minavg arrival delay

1.9%cancelled

0diverted

53flights tracked

Arrival delay distribution

Early/on time · 231–60 min · 2861–180 min · 1180+ min · 0

On-time by day of week

Mon

75.0%

Tue

88.9%

Wed

66.7%

Thu

87.5%

Fri

62.5%

Sat

100.0%

Sun

100.0%

On-time by month

71.4%

Jan

85.2%

Feb

100.0%

Mar

← All flights on IAD–DEN