| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Nov 01 | STL | BOS | 11:01 | 14:00 |
Landed
|
Track > |
| Oct 31 | STL | BOS | 10:48 | 13:59 |
Landed
|
Track > |
| Oct 30 | STL | BOS | 08:05 | 11:18 |
Landed
|
Track > |
| Oct 29 | STL | BOS | 18:57 | 22:10 |
Unknown
|
Track > |
| Oct 28 | STL | BOS | 18:56 | 22:12 |
Landed
|
Track > |
| Oct 27 | STL | BOS | 08:23 | 11:43 |
Landed Late
|
Track > |
| Oct 26 | STL | BOS | 08:04 | 11:19 |
Landed
|
Track > |
| Oct 25 | STL | BOS | 11:03 | 14:12 |
Landed
|
Track > |
| Oct 24 | STL | BOS | 08:13 | 11:44 |
Landed Late
|
Track > |
| Oct 23 | STL | BOS | 07:50 | 10:59 |
Landed
|
Track > |
Southwest Airlines Flight WN4420 connects St. Louis, United States to Boston, United States, taking off from St. Louis Lambert International Airport STL and landing at Boston Logan International Airport BOS.
How long is the WN4420 flight from St. Louis to Boston?
The average flight time from St. Louis to Boston is 2 hours and 13 minutes. The flight distance is 1680 km / 1044 miles and the average flight speed is 757 km/h / 471 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4420 St. Louis to Boston?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4420 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4420 arriving at?
Flight WN4420 arrives at Boston Logan International Airport (BOS) Terminal B.
When was the latest WN4420 flight?
The latest flight took off on Saturday, November 1st, 2025 with the flight status being Landed on 14:00.
How else can the flight WN4420 be referenced as?
This Southwest Airlines flight can also be referenced as SWA4420, WN 4420, SWA 4420.
How often is flight WN4420 delayed?
On average, 30% of all WN4420 flights are delayed. The average delay is 16 minutes.
Can I get compensation for my delayed or cancelled WN4420 flight or baggage issues?
If your WN4420 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 WN4420 Flight Tracker above for more details.
Other flights departing from St. Louis STL: WN845, WN4704, WN4567, WN3128
Other flights arriving at Boston BOS: WN3203, DL5728, DL5622, DL1302
All flights connecting St. Louis STL to Boston BOS.
