How often is WN621 on time?

Across 19 flights on BWI → MIA from 2026-01-10 to 2026-03-02, WN621 arrived within 15 minutes of schedule 56% of the time. The median arrival delay was +15 min, and the worst 10% of flights arrived +34 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

• WN621 on SJC → BWI (27 flights)
• WN621 on BNA → ECP (58 flights)
• WN621 on ECP → HOU (18 flights)
• WN621 on AUS → SAN (20 flights)
• WN621 on DCA → AUS (15 flights)
• WN621 on BNA → RSW (39 flights)
• WN621 on TPA → AUS (42 flights)
• WN621 on AUS → LAX (35 flights)
• WN621 on AUS → ONT (1 flights)
• WN621 on CMH → TPA (1 flights)
• WN621 on MDW → CMH (1 flights)
• WN621 on BNA → MCI (1 flights)
• WN621 on BWI → GRR (9 flights)
• WN621 on SMF → PHX (22 flights)
• WN621 on PHX → TPA (13 flights)
• WN621 on BNA → BUR (4 flights)
• WN621 on GRR → BNA (4 flights)
• WN621 on PDX → LAS (26 flights)
• WN621 on SNA → DEN (8 flights)
• WN621 on MDW → PDX (8 flights)
• WN621 on AUS → LAS (29 flights)
• WN621 on OKC → MCO (5 flights)

Related

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