How often is WN3991 on time?

Across 19 flights on MSY → DCA from 2026-02-05 to 2026-03-02, WN3991 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +15 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

• WN3991 on STS → BUR (19 flights)
• WN3991 on SMF → BNA (8 flights)
• WN3991 on SAN → SEA (1 flights)
• WN3991 on MDW → RSW (33 flights)
• WN3991 on SAT → MSY (36 flights)
• WN3991 on FLL → AUS (5 flights)
• WN3991 on OAK → DEN (22 flights)
• WN3991 on MDW → SEA (4 flights)
• WN3991 on MDW → MSP (8 flights)
• WN3991 on SNA → LAS (34 flights)
• WN3991 on LAS → ALB (5 flights)

Related

• All Southwest Airlines flights on MSY → DCA
• Compare airlines on MSY → DCA
• Southwest Airlines on the return, DCA → MSY