WN421 Flight Status Southwest Airlines: Denver to Sacramento (SWA421)

WN 421 Denver to Sacramento Flight Status

Not scheduled today. Latest flight: September 28th, 2026 ; recent history is in the table below.

WN 421 Flight Status & Schedule Southwest Airlines Denver to Sacramento

Date From To Departure Arrival Status Details
Sep 28 DEN SMF 10:33 11:43 Landed Track >
Sep 25 DEN SMF 10:33 11:34 Landed Track >
Sep 24 DEN SMF 10:30 11:28 Landed Track >
Sep 21 DEN SMF 10:35 11:38 Landed Track >
Sep 18 DEN SMF 10:27 11:30 Landed Track >
Sep 17 DEN SMF 10:52 11:56 Landed Track >
Sep 14 DEN SMF 10:32 11:44 Landed Track >
Sep 11 DEN SMF 10:49 11:57 Landed Track >
Sep 10 DEN SMF 11:24 12:24 Landed Late Track >
Sep 07 DEN SMF 10:29 11:39 Landed Track >

Southwest Airlines operates WN 421 from Denver to Sacramento, a 1,460 km (907 mi) trip. With 2 h 40 min in the timetable and a usual flight time of about 2 h 5 min, it often makes up time. It is not flying today; the last flight, on 28 September 2026, landed on time.

< All Denver DEN Departures All Sacramento SMF Arrivals >

About WN 421

Route
Denver International Airport DEN to Sacramento International Airport SMF
Distance
1,460 km (907 mi)
Typical flight time
2 h 5 min
On time
9 of the last 10
Average delay when late
29 min

WN 421 FAQ

How long is the WN421 flight?
The timetable allows 2 h 40 min. Denver to Sacramento is 1,460 km (907 mi).
How often is WN421 late?
1 of the last 10 flights arrived 15 or more minutes late; when late, by 29 minutes on average.
Which terminal does WN421 use?
It usually arrives at Terminal B at Sacramento International Airport (SMF). Check the flight card above for today's terminal and gate.
What other flight numbers does WN421 have?
Also listed as SWA421 (Southwest Airlines' ICAO code) and WN 421.

WN421 and Denver DEN to Sacramento SMF Flights

Other flights departing from Denver DEN: G4215, WN1708, UA5497

Other flights arriving at Sacramento SMF: WN1199, WN3543, AS763, OO3439

All flights connecting Denver DEN to Sacramento SMF.