DL637 · SEA → ORD

Delta Air Lines · Seattle to Chicago O'Hare · last 12 months · 138 flights tracked

69.2%on-time

DL637 SEA→ORD: 69.2% on-time over 138 flights (last 12 months) — average. It trails the route average (76.7%) by 7.5 points. Best day to fly: Tue (90.0%); worst: Sun (50.0%). Seasonality matters: Jun is the most reliable month (89.3%), Apr the worst (56.2%). Average arrival delay: 16.6 minutes.

Data: US BTS, last 12 months.

16.6 minavg arrival delay

1.4%cancelled

3diverted

138flights tracked

Arrival delay distribution

Early/on time · 591–60 min · 6561–180 min · 8180+ min · 1

On-time by day of week

Mon

60.0%

Tue

90.0%

Wed

68.4%

Thu

55.6%

Fri

75.0%

Sat

87.5%

Sun

50.0%

On-time by month

56.2%

Apr

63.3%

May

89.3%

Jun

64.5%

Jul

61.3%

Aug

← All flights on SEA–ORD