How often is WN2121 on time?

Across 47 flights on DEN → BOS from 2026-01-06 to 2026-03-04, WN2121 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +97 min or later. 4% 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

• WN2121 on LAS → SAN (19 flights)
• WN2121 on SAN → SJC (12 flights)
• WN2121 on MCI → BNA (4 flights)
• WN2121 on MCO → PVD (4 flights)
• WN2121 on OAK → LAS (58 flights)
• WN2121 on LAS → ELP (8 flights)
• WN2121 on LAS → SLC (1 flights)
• WN2121 on DAL → DEN (33 flights)
• WN2121 on BNA → LGB (11 flights)
• WN2121 on DCA → BNA (11 flights)
• WN2121 on LGB → SMF (3 flights)
• WN2121 on BUR → PHX (38 flights)
• WN2121 on PHX → SLC (1 flights)
• WN2121 on TPA → STL (1 flights)
• WN2121 on HOU → SAN (12 flights)
• WN2121 on SAN → LAS (4 flights)
• WN2121 on MDW → ATL (42 flights)
• WN2121 on COS → LAS (14 flights)
• WN2121 on MDW → PDX (20 flights)
• WN2121 on LGA → MDW (5 flights)

Related

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