DL1239 · SEA → SLC

Delta Air Lines · Seattle to Salt Lake City · last 12 months · 256 flights tracked

81.2%on-time

DL1239 SEA→SLC: 81.2% on-time over 256 flights (last 12 months) — solid. It trails the route average (83.4%) by 2.2 points. Best day to fly: Tue (89.7%); worst: Fri (68.9%). Seasonality matters: Oct is the most reliable month (100.0%), Jun the worst (68.4%). Average arrival delay: 11.2 minutes.

Data: US BTS, last 12 months.

11.2 minavg arrival delay

0.4%cancelled

0diverted

256flights tracked

Arrival delay distribution

Early/on time · 1761–60 min · 6261–180 min · 17180+ min · 0

On-time by day of week

Mon

79.6%

Tue

89.7%

Wed

82.8%

Thu

84.8%

Fri

68.9%

Sat

80.0%

Sun

85.1%

On-time by month

91.7%

Sep

100.0%

Oct

92.9%

Nov

76.2%

Dec

80.6%

Jan

87.5%

Feb

92.3%

Mar

76.9%

Apr

69.2%

May

68.4%

Jun

70.8%

Jul

82.4%

Aug

← All flights on SEA–SLC