How often is DL2421 on time?

Across 84 flights on SLC → STL from 2026-01-05 to 2026-06-05, DL2421 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +17 min or later. 2% of flights were cancelled.

Delay distribution

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

Performance by month

Performance by day of week

Other routes

• DL2421 on LGA → TVC (3 flights)
• DL2421 on TVC → LGA (3 flights)
• DL2421 on STL → SLC (25 flights)
• DL2421 on ATL → MEM (31 flights)
• DL2421 on MEM → ATL (31 flights)
• DL2421 on ATL → CHA (89 flights)
• DL2421 on AGS → ATL (1 flights)
• DL2421 on ATL → AGS (1 flights)

Related

• All Delta Air Lines flights on SLC → STL
• Compare airlines on SLC → STL
• Delta Air Lines on the return, STL → SLC