DL1739 ORD → SLC

Delta Air Lines · Chicago, IL to Salt Lake City, UT · 129 flights observed, 2025-08-11 to 2025-12-19 · 1,250 mi

This flight has been getting less reliable recently — 2025-12's on-time rate (42%) is well below the 71% average from earlier months.

DL1739 covers more than one route in the data window — the stats below are for ORD → SLC, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
67%
Median delay
+4 min
90th percentile
+97 min
Cancellation rate
2%

How often is DL1739 on time?

Across 129 flights on ORD → SLC from 2025-08-11 to 2025-12-19, DL1739 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +97 min or later. 2% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time8567%
16-30 min1512%
31-60 min43%
61-120 min1310%
2+ hrs108%

Performance by month

MonthFlightsOn-timeAvg delay
2025-082162%+59 min
2025-093070%+10 min
2025-103177%+17 min
2025-112673%+51 min
2025-121942%+122 min

Performance by day of week

DayFlightsOn-time
Mon1872%
Tue1878%
Wed1968%
Thu1878%
Fri1861%
Sat1861%
Sun1850%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…