How often is WN4437 on time?

Across 22 flights on SEA → LAS from 2025-10-02 to 2025-11-01, WN4437 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived 0 min or later. 5% 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

• WN4437 on BWI → GSP (20 flights)
• WN4437 on BNA → AUS (58 flights)
• WN4437 on AUS → LAS (8 flights)
• WN4437 on SJC → BUR (33 flights)
• WN4437 on BNA → DTW (47 flights)
• WN4437 on TPA → BDL (5 flights)
• WN4437 on RSW → BWI (6 flights)
• WN4437 on DEN → BOI (1 flights)
• WN4437 on OAK → DEN (1 flights)
• WN4437 on GEG → DAL (5 flights)

Related

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