How often is WN1399 on time?

Across 58 flights on GRR → MDW from 2026-01-06 to 2026-03-04, WN1399 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +28 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

• WN1399 on MCI → BWI (16 flights)
• WN1399 on MDW → DEN (50 flights)
• WN1399 on BUR → SMF (28 flights)
• WN1399 on LAS → GRR (22 flights)
• WN1399 on BWI → GRR (3 flights)
• WN1399 on RSW → GRR (5 flights)
• WN1399 on BOS → STL (42 flights)
• WN1399 on STL → BNA (18 flights)
• WN1399 on DEN → LGB (4 flights)
• WN1399 on DEN → LAS (1 flights)
• WN1399 on LAS → LGB (1 flights)
• WN1399 on BWI → MIA (27 flights)
• WN1399 on MIA → AUS (6 flights)
• WN1399 on MDW → PIT (50 flights)
• WN1399 on MIA → MDW (7 flights)
• WN1399 on PIT → FLL (7 flights)
• WN1399 on PIT → TPA (1 flights)
• WN1399 on BOI → SJC (15 flights)
• WN1399 on SJC → SNA (34 flights)

Related

• All Southwest Airlines flights on GRR → MDW
• Compare airlines on GRR → MDW
• Southwest Airlines on the return, MDW → GRR