WN2121 Flight Status Southwest Airlines: Denver to Boston (SWA2121)

WN 2121 Denver to Boston Flight Status

Not scheduled today. Latest flight: March 4th, 2026 ; recent history is in the table below.

WN 2121 Flight Status & Schedule Southwest Airlines Denver to Boston

Date From To Departure Arrival Status Details
Mar 04 DEN BOS 16:59 22:13 Landed Track >
Mar 03 DEN BOS 16:55 22:03 Landed Track >
Mar 02 DEN BOS 17:10 22:17 Landed Track >
Feb 25 DEN BOS 19:23 00:32 Delayed Track >
Feb 24 DEN BOS 17:16 22:27 Landed Track >
Feb 23 DEN BOS 16:35 22:20 Cancelled Track >
Feb 19 DEN BOS 18:48 23:56 Delayed Track >
Feb 18 DEN BOS 18:24 23:30 Delayed Track >
Feb 17 DEN BOS 20:34 01:47 Delayed Track >
Feb 15 DEN BOS 18:32 23:43 Delayed Track >

Southwest Airlines flight WN 2121 links Denver and Boston, 2,816 km (1,749 mi) apart. The timetable allows 3 h 45 min; there is not enough recent history yet to say how long it usually takes. It is not flying today; the last flight, on 4 March 2026, landed on time.

< All Denver DEN Departures All Boston BOS Arrivals >

About WN 2121

Route
Denver International Airport DEN to Boston Logan International Airport BOS
Distance
2,816 km (1,749 mi)
Scheduled flight time
3 h 45 min
On time
4 of the last 5

WN 2121 FAQ

How long is the WN2121 flight?
The timetable allows 3 h 45 min. Denver to Boston is 2,816 km (1,749 mi).
How often is WN2121 late?
None of the last 5 flights arrived 15 or more minutes late and 1 was cancelled.
Which terminal does WN2121 use?
It usually 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 WN2121 have?
Also listed as SWA2121 (Southwest Airlines' ICAO code) and WN 2121.

WN2121 and Denver DEN to Boston BOS Flights

Other flights departing from Denver DEN: WN1077, WN449, WN3150, WN4464

Other flights arriving at Boston BOS: AA1385, DL651, AA1624, AA4458

All flights connecting Denver DEN to Boston BOS.