How often is DL3947 on time?

Across 27 flights on BUF → DTW from 2026-04-13 to 2026-05-24, DL3947 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +16 min or later. 0% 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

• DL3947 on BZN → LAX (4 flights)
• DL3947 on LAX → BZN (4 flights)
• DL3947 on DTW → BUF (27 flights)
• DL3947 on MKE → MSP (98 flights)
• DL3947 on ATL → EVV (15 flights)
• DL3947 on ATL → TRI (71 flights)
• DL3947 on TRI → ATL (71 flights)
• DL3947 on DTW → CLE (1 flights)

Related

• All Delta Air Lines flights on BUF → DTW
• Compare airlines on BUF → DTW
• Delta Air Lines on the return, DTW → BUF