WN3521Chicago to Seattle
Southwest Airlines flight WN3521 flies from Chicago Midway (MDW) to Seattle Tacoma (SEA), 2,782 km. Over August 2025 to July 2026 it usually arrives about 6 minutes late: 78% of 228 flights arrived within 15 minutes of schedule and 0% were cancelled (US Department of Transportation data).
On-time record, last 12 months
Every operation of WN3521, August 2025 to July 2026: 228 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as WN3521
- Chicago Midway (MDW) to Seattle Tacoma (SEA)58 flights
- Kansas City (MCI) to Las Vegas (LAS)36 flights
- Los Angeles (LAX) to San Jose (SJC)27 flights
- Los Angeles (LAX) to Phoenix Sky Harbor (PHX)16 flights
- Sacramento (SMF) to Los Angeles (LAX)16 flights
- Chicago Midway (MDW) to Boston (BOS)8 flights
- Dallas Love Field (DAL) to Memphis (MEM)8 flights
- Las Vegas (LAS) to Baltimore (BWI)8 flights
- Atlanta (ATL) to Houston (HOU)7 flights
- Las Vegas (LAS) to Ontario (ONT)7 flights
Other flights from Chicago to Seattle
More about Chicago Midway (MDW) and Seattle Tacoma (SEA).
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