| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 03 | MDW | SEA | 10:25 | 12:13 |
Landed
|
Track > |
| Jun 02 | MDW | SEA | 10:35 | 12:24 |
Landed
|
Track > |
| Jun 01 | MDW | SEA | 11:08 | 12:50 |
Landed
|
Track > |
| May 31 | MDW | SEA | 10:34 | 12:08 |
Landed
|
Track > |
| May 30 | MDW | SEA | 10:30 | 11:57 |
Landed
|
Track > |
| May 29 | MDW | SEA | 10:47 | 12:21 |
Landed
|
Track > |
| May 28 | MDW | SEA | 10:50 | 12:26 |
Landed
|
Track > |
| May 27 | MDW | SEA | 10:35 | 12:21 |
Landed
|
Track > |
| May 26 | MDW | SEA | 10:40 | 12:18 |
Landed
|
Track > |
| May 25 | MDW | SEA | 10:48 | 12:40 |
Landed
|
Track > |
Southwest Airlines Flight WN3521 connects Chicago, United States to Seattle, United States, taking off from Chicago Midway International Airport MDW and landing at Seattle Tacoma International Airport SEA.
How long is the WN3521 flight from Chicago to Seattle?
The average flight time from Chicago to Seattle is 3 hours and 40 minutes. The flight distance is 2782 km / 1729 miles and the average flight speed is 758 km/h / 471 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN3521 Chicago to Seattle?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN3521 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest WN3521 flight?
The latest flight took off on Wednesday, June 3rd, 2026 with the flight status being Landed on 12:13.
How else can the flight WN3521 be referenced as?
This Southwest Airlines flight can also be referenced as SWA3521, WN 3521, SWA 3521.
How often is flight WN3521 delayed?
On average, 0% of all WN3521 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled WN3521 flight or baggage issues?
If your WN3521 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our WN3521 Flight Tracker above for more details.
Other flights departing from Chicago MDW: WN1164, WN3414, WN3663, WN762
Other flights arriving at Seattle SEA: AS735, AS3182, DL794, AS2140
All flights connecting Chicago MDW to Seattle SEA.