UA1531 · ORD → PDX

United Airlines · Chicago O'Hare to Portland · last 12 months · 82 flights tracked

62.5%on-time

UA1531 ORD→PDX: 62.5% on-time over 82 flights (last 12 months) — below average. It trails the route average (67.6%) by 5.1 points. Best day to fly: Sat (92.9%); worst: Wed (40.0%). Seasonality matters: May is the most reliable month (80.0%), Mar the worst (54.2%). Cancellation rate is 2.4% — have a backup plan. Average arrival delay: 25.5 minutes.

Data: US BTS, last 12 months.

25.5 minavg arrival delay

2.4%cancelled

0diverted

82flights tracked

Arrival delay distribution

Early/on time · 301–60 min · 4461–180 min · 3180+ min · 3

On-time by day of week

Mon

55.6%

Tue

70.0%

Wed

40.0%

Thu

61.5%

Fri

46.2%

Sat

92.9%

Sun

63.6%

On-time by month

63.6%

Feb

54.2%

Mar

56.0%

Apr

80.0%

May

← All flights on ORD–PDX