How often is WN4156 on time?

Across 27 flights on BOS → DEN from 2026-06-04 to 2026-06-30, WN4156 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +22 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

• WN4156 on MCO → PBI (1 flights)
• WN4156 on MDW → BNA (5 flights)
• WN4156 on MCO → STL (4 flights)
• WN4156 on MCO → BHM (14 flights)
• WN4156 on BNA → MCO (8 flights)
• WN4156 on DAL → MAF (14 flights)
• WN4156 on PIT → ATL (18 flights)
• WN4156 on DEN → STL (10 flights)
• WN4156 on ATL → BNA (1 flights)
• WN4156 on BNA → DTW (1 flights)
• WN4156 on CMH → MYR (5 flights)

Related

• All Southwest Airlines flights on BOS → DEN
• Compare airlines on BOS → DEN
• Southwest Airlines on the return, DEN → BOS