DL1521 ATL → RSW

Delta Air Lines · Atlanta, GA to Fort Myers, FL · 41 flights observed, 2025-11-09 to 2025-12-19 · 515 mi

This flight's reliability varies a lot by day of week — 100% on-time on Wednesdays vs. 50% on Mondays.

DL1521 covers more than one route in the data window — the stats below are for ATL → RSW, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
76%
Median delay
+2 min
90th percentile
+46 min
Cancellation rate
0%

How often is DL1521 on time?

Across 41 flights on ATL → RSW from 2025-11-09 to 2025-12-19, DL1521 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +46 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3176%
16-30 min512%
31-60 min25%
61-120 min12%
2+ hrs25%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112282%+6 min
2025-121968%+31 min

Performance by day of week

DayFlightsOn-time
Mon650%
Tue683%
Wed6100%
Thu683%
Fri683%
Sat580%
Sun650%

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