DL663 · ATL → SLC

Delta Air Lines · Atlanta to Salt Lake City · last 12 months · 365 flights tracked

87.9%on-time

DL663 ATL→SLC: 87.9% on-time over 365 flights (last 12 months) — excellent. It beats the route average (82.7%) by 5.2 points. Seasonality matters: Sep is the most reliable month (100.0%), Jun the worst (76.7%). Average arrival delay: 9.6 minutes.

Data: US BTS, last 12 months.

9.6 minavg arrival delay

0.3%cancelled

0diverted

365flights tracked

Arrival delay distribution

Early/on time · 2631–60 min · 8261–180 min · 16180+ min · 3

On-time by day of week

Mon

84.9%

Tue

88.5%

Wed

88.5%

Thu

86.5%

Fri

92.3%

Sat

86.3%

Sun

88.5%

On-time by month

100.0%

Sep

87.1%

Oct

96.7%

Nov

87.1%

Dec

80.0%

Jan

82.1%

Feb

87.1%

Mar

90.0%

Apr

93.5%

May

76.7%

Jun

90.3%

Jul

83.9%

Aug

← All flights on ATL–SLC