How often is WN921 on time?

Across 50 flights on BUF → BWI from 2026-04-07 to 2026-06-03, WN921 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +12 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

• WN921 on ISP → BWI (19 flights)
• WN921 on PBI → ISP (7 flights)
• WN921 on BWI → CMH (20 flights)
• WN921 on CMH → DEN (12 flights)
• WN921 on LAS → RNO (4 flights)
• WN921 on CMH → LAS (4 flights)
• WN921 on CMH → AUS (8 flights)
• WN921 on TPA → FLL (25 flights)
• WN921 on FLL → BNA (5 flights)
• WN921 on BWI → ISP (58 flights)
• WN921 on PIT → RSW (64 flights)
• WN921 on BWI → BDL (1 flights)
• WN921 on BWI → SAT (19 flights)
• WN921 on SAT → ELP (13 flights)
• WN921 on CMH → STL (12 flights)
• WN921 on DEN → DTW (42 flights)
• WN921 on DTW → BNA (18 flights)
• WN921 on MCO → PHX (1 flights)
• WN921 on PHX → SNA (1 flights)
• WN921 on DAL → ELP (25 flights)

Related

• All Southwest Airlines flights on BUF → BWI
• Compare airlines on BUF → BWI
• Southwest Airlines on the return, BWI → BUF