How often is WN1220 on time?

Across 23 flights on COS → DEN from 2026-06-04 to 2026-06-30, WN1220 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -20 min, and the worst 10% of flights arrived -8 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

• WN1220 on MCO → CVG (4 flights)
• WN1220 on CVG → BNA (4 flights)
• WN1220 on MCI → DEN (58 flights)
• WN1220 on HOU → MCI (1 flights)
• WN1220 on DEN → LBB (1 flights)
• WN1220 on BOI → SAN (15 flights)
• WN1220 on AUS → IND (13 flights)
• WN1220 on DAL → AUS (13 flights)
• WN1220 on ELP → DAL (13 flights)
• WN1220 on DAL → MEM (5 flights)
• WN1220 on LAS → SMF (47 flights)
• WN1220 on MCI → LAS (28 flights)
• WN1220 on SLC → LAS (14 flights)
• WN1220 on DAL → ECP (8 flights)
• WN1220 on ECP → BNA (11 flights)
• WN1220 on OAK → LIH (64 flights)
• WN1220 on SAT → DAL (1 flights)
• WN1220 on OAK → DEN (30 flights)
• WN1220 on BUR → OAK (14 flights)
• WN1220 on BNA → PBI (19 flights)
• WN1220 on PBI → MCO (16 flights)
• WN1220 on ISP → PBI (7 flights)
• WN1220 on BWI → PBI (8 flights)
• WN1220 on RNO → LAS (34 flights)
• WN1220 on SJC → RNO (14 flights)
• WN1220 on LAS → SAN (5 flights)

Related

• All Southwest Airlines flights on COS → DEN
• Compare airlines on COS → DEN
• Southwest Airlines on the return, DEN → COS