How often is WN4237 on time?

Across 57 flights on SAN → LAS from 2026-04-07 to 2026-06-03, WN4237 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +26 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

• WN4237 on SFO → PHX (23 flights)
• WN4237 on PIT → RSW (4 flights)
• WN4237 on LAS → SLC (7 flights)
• WN4237 on OAK → SAN (7 flights)
• WN4237 on PHX → DEN (1 flights)
• WN4237 on SLC → OAK (5 flights)
• WN4237 on BWI → ATL (2 flights)
• WN4237 on MCI → LAS (1 flights)
• WN4237 on BOS → BWI (1 flights)
• WN4237 on SAN → OAK (58 flights)
• WN4237 on OAK → GEG (1 flights)
• WN4237 on HOU → BHM (4 flights)
• WN4237 on BWI → CHS (18 flights)
• WN4237 on TPA → MSY (24 flights)
• WN4237 on DEN → MCO (7 flights)
• WN4237 on FAT → DEN (7 flights)
• WN4237 on LAS → FAT (7 flights)
• WN4237 on DEN → SAN (5 flights)
• WN4237 on FLL → BUF (5 flights)

Related

• All Southwest Airlines flights on SAN → LAS
• Compare airlines on SAN → LAS
• Southwest Airlines on the return, LAS → SAN