WN3948 Flight Status Southwest Airlines: St. Louis to Boston (SWA3948)

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WN 3948 St. Louis to Boston Flight Status

Not scheduled today (November 9th, 2026). Latest flight: June 3rd, 2026 ; recent history is in the table below.

WN 3948 Flight Status & Schedule Southwest Airlines St. Louis to Boston

Date From To Departure Arrival Status Details
Jun 03 STL BOS 10:24 13:45 Landed Track >
Jun 02 STL BOS 10:24 14:08 Landed Late Track >
Jun 01 STL BOS 11:47 14:59 Delayed Track >
May 31 STL BOS 10:27 13:47 Landed Track >
May 29 STL BOS 10:27 13:44 Landed Track >
May 28 STL BOS 10:29 13:42 Landed Track >
May 27 STL BOS 10:30 13:42 Landed Track >
May 26 STL BOS 10:26 13:29 Landed Track >
May 25 STL BOS 10:24 13:29 Landed Track >
May 22 STL BOS 10:40 13:47 Landed Track >

Southwest Airlines flight WN 3948 links St. Louis and Boston, 1,680 km (1,044 mi) apart. The timetable allows 2 h 35 min, but the flight usually takes about 2 h 15 min, so it often makes up time. It is not flying today; the last flight, on 3 June 2026, landed on time.

< All St. Louis STL Departures All Boston BOS Arrivals >

About WN 3948

Route
St. Louis Lambert International Airport STL to Boston Logan International Airport BOS
Distance
1,680 km (1,044 mi)
Typical flight time
2 h 15 min
On time
8 of the last 9
Average delay when late
18 min
Usually departs from
Terminal 2

WN 3948 FAQ

How long is the WN3948 flight?
The timetable allows 2 h 35 min. St. Louis to Boston is 1,680 km (1,044 mi).
How often is WN3948 late?
1 of the last 9 flights arrived 15 or more minutes late; when late, by 18 minutes on average.
Which terminal does WN3948 use?
It usually leaves from Terminal 2 at St. Louis Lambert International Airport (STL) and arrives at Terminal B at Boston Logan International Airport (BOS). Check the flight card above for today's terminal and gate.
What other flight numbers does WN3948 have?
Also listed as SWA3948 (Southwest Airlines' ICAO code) and WN 3948.

WN3948 and St. Louis STL to Boston BOS Flights

Other flights departing from St. Louis STL: WN1659, WN2311, WN4427, WN757

Other flights arriving at Boston BOS: B6478, DL1475, DL2560, WN541

All flights connecting St. Louis STL to Boston BOS.