DL637 · ORD → SEA

Delta Air Lines · Chicago O'Hare to Seattle · last 12 months · 100 flights tracked

61.2%on-time

DL637 ORD→SEA: 61.2% on-time over 100 flights (last 12 months) — below average. It trails the route average (67.5%) by 6.3 points. Best day to fly: Sat (83.3%); worst: Wed (35.7%). Seasonality matters: Jun is the most reliable month (72.0%), Jul the worst (44.0%). Cancellation rate is 2.0% — have a backup plan. Average arrival delay: 20.1 minutes.

Data: US BTS, last 12 months.

20.1 minavg arrival delay

2.0%cancelled

0diverted

100flights tracked

Arrival delay distribution

Early/on time · 471–60 min · 4561–180 min · 4180+ min · 2

On-time by day of week

Mon

71.4%

Tue

66.7%

Wed

35.7%

Thu

50.0%

Fri

60.0%

Sat

83.3%

Sun

64.3%

On-time by month

62.5%

Apr

63.3%

May

72.0%

Jun

44.0%

Jul

100.0%

Aug

← All flights on ORD–SEA