How often is WN851 on time?

Across 30 flights on DEN → ONT from 2025-07-01 to 2025-08-04, WN851 arrived within 15 minutes of schedule 63% of the time. The median arrival delay was +13 min, and the worst 10% of flights arrived +41 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

• WN851 on BUR → SMF (27 flights)
• WN851 on SMF → DEN (4 flights)
• WN851 on DEN → COS (4 flights)
• WN851 on DAL → DEN (18 flights)
• WN851 on CMH → LAS (7 flights)
• WN851 on TPA → MKE (8 flights)
• WN851 on BNA → DEN (28 flights)
• WN851 on DCA → BNA (13 flights)
• WN851 on BWI → BOS (58 flights)
• WN851 on HOU → MDW (64 flights)
• WN851 on SJC → BUR (8 flights)
• WN851 on DAL → BNA (5 flights)
• WN851 on BUR → LAS (1 flights)
• WN851 on DAL → TUS (21 flights)
• WN851 on AUS → DEN (4 flights)
• WN851 on MSY → DAL (34 flights)
• WN851 on DAL → SJC (7 flights)
• WN851 on DAL → LAS (8 flights)
• WN851 on MCI → DEN (1 flights)
• WN851 on ONT → OAK (1 flights)

Related

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