Southwest Airlines WN3521 Flight Status : Live Tracking & Updates

Domestic flight Southwest Airlines WN3521 takes off from Chicago (MDW) United States to Seattle (SEA) United States. It's operated by Southwest Airlines. The plane leaves Chicago Midway International Airport at 10:15 05 May 2026 America/Chicago. The flight is expected to land at Seattle International Airport at 12:45 05 May 2026 America/Los_Angeles. The flight will last about 4 hours 30 minutes.

Current status of WN3521 is Departed On time Estimated Arrival in 1 hour, 30 minutes

WN3521 - SWA3521 Southwest Airlines (WN)
MDW Chicago United States
Flight MDW to SEA
SEA Seattle United States
Departed On time Estimated Arrival in 1 hour, 30 minutes
Departure Chicago Midway International Airport
IATA: MDWICAO: KMDW
Scheduled 10:15 05 May 2026
Actual 10:26 05 May 2026
None A4B
Arrival Seattle International Airport
IATA: SEAICAO: KSEA
Scheduled 12:45 05 May 2026
Estimated 12:58 05 May 2026
None B12
WN3521 Detail
  • Type: Domestic Flight
  • Flight Duration: 4 hours 30 minutes
  • Flight Distance: 2790 kms / 1733 miles
Airline
  • Southwest Airlines
  • IATA: WN
  • ICAO: SWA
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 143
  • Freight capacity: 8.4 tons
  • Passenger classes: Economy, Premium Economy
More Detail
  • Aircraft: Boeing 737MAX 8 Passenger
  • Callsign: F-KSPG1
  • Departure Timezone: America/Chicago
  • Arrival Timezone: America/Los_Angeles
  • Current Time in Chicago: Tuesday 2026-05-05 13:28 PM
  • Current Time in Seattle: Tuesday 2026-05-05 11:28 AM

Southwest Airlines WN3521 Flight Statistics

Southwest Airlines
Southwest Airlines
FLIGHT NO WN3521
AIRPLANE Boeing 737MAX 8 Passenger
ON TIME 11
DELAYED 1
CANCELLED 0
ON TIME 24
DELAYED 1
CANCELLED 1
ON TIME 34
DELAYED 3
CANCELLED 1
ON TIME 45
DELAYED 4
CANCELLED 3
Last 14 days flight data
14 30 60 90
On Time Rate

Southwest Airlines WN3521 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Mon 04 May
Arrived Delayed by 1h 24m
Chicago (MDW) 2026-05-04T10:35
Seattle (SEA) 2026-05-04T13:05
2026-05-04T11:55
2026-05-04T14:29
Sun 03 May
Departed On time
Chicago (MDW) 2026-05-03T10:15
Seattle (SEA) 2026-05-03T12:45
2026-05-03T10:11
Sat 02 May
Arrived On time
Chicago (MDW) 2026-05-02T10:10
Seattle (SEA) 2026-05-02T12:40
2026-05-02T10:23
2026-05-02T12:41
Thu 30 Apr
Scheduled Delayed by 16m
Chicago (MDW) 2026-04-30T10:35
Seattle (SEA) 2026-04-30T13:05
Wed 29 Apr
Scheduled Delayed by 16m
Chicago (MDW) 2026-04-29T10:15
Seattle (SEA) 2026-04-29T12:45
Tue 28 Apr
Arrived On time
Chicago (MDW) 2026-04-28T10:15
Seattle (SEA) 2026-04-28T12:45
2026-04-28T10:15
2026-04-28T12:29
Mon 27 Apr
Scheduled On time
Chicago (MDW) 2026-04-27T10:35
Seattle (SEA) 2026-04-27T13:05
Sun 26 Apr
Arrived On time
Chicago (MDW) 2026-04-26T16:45
Seattle (SEA) 2026-04-26T17:50
2026-04-26T17:01
2026-04-26T17:58
Sat 25 Apr
Arrived On time
Chicago (MDW) 2026-04-25T10:10
Seattle (SEA) 2026-04-25T12:40
2026-04-25T10:13
2026-04-25T12:45
Fri 24 Apr
Scheduled On time
Chicago (MDW) 2026-04-24T10:35
Seattle (SEA) 2026-04-24T13:05

Flight routes similar to Southwest Airlines WN3521

Airline Flight no Departure Arrival
Southwest Airlines WN3378
Southwest Airlines 		05/05/2026
21:35 		4 hours 30 minutes
00:05
Southwest Airlines WN8920
Southwest Airlines 		05/05/2026
06:00 		5 hours 0 minutes
09:00

Southwest Airlines Flight WN3521 FAQs

What is the scheduled flight duration for Southwest Airlines WN3521 flight?

On average, nonstop flight takes 4 hour(s) 30 minutes, with the flight distance of 2790 km (1733 miles).

What is the current status of Southwest Airlines WN3521 flight?

The current status of flight Southwest Airlines WN3521 is Departed On time.

What type of aircraft is used for the Southwest Airlines WN3521 flight?

All Southwest Airlines WN3521 flights are operated using Boeing 737MAX 8 Passenger aircraft.

How many Southwest Airlines WN3521 flights are operated a week?

7 flights per week. The Flight Southwest Airlines WN3521 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .