G421 Flight Status Allegiant Air: Santa Maria to Las Vegas (AAY21)

G4 21 Santa Maria to Las Vegas Flight Status

Not scheduled today. Latest flight: May 14th, 2026 ; recent history is in the table below.

G4 21 Flight Status & Schedule Allegiant Air Santa Maria to Las Vegas

Date From To Departure Arrival Status Details
May 14 SMX LAS 15:44 16:45 Landed Track >
Apr 30 SMX LAS 15:28 16:48 Scheduled Track >
Apr 23 SMX LAS 15:27 16:18 Landed Track >
Apr 16 SMX LAS 16:16 17:19 Landed Late Track >
Apr 09 SMX LAS 15:38 16:35 Landed Track >
Apr 02 SMX LAS 15:41 16:39 Landed Track >
Mar 01 SMX LAS 22:20 23:32 Delayed >1h Track >
Feb 22 SMX LAS 22:04 22:49 Landed Track >
Feb 19 SMX LAS 23:08 00:04 Landed Late Track >
Feb 15 SMX LAS 22:11 23:05 Landed Track >

Allegiant Air operates G4 21 from Santa Maria to Las Vegas, a 498 km (309 mi) trip. With 1 h 20 min in the timetable and a usual flight time of about 55 min, it often makes up time. It is not flying today; the last flight, on 14 May 2026, landed on time.

< All Santa Maria SMX Departures All Las Vegas LAS Arrivals >

About G4 21

Route
Santa Maria Public Airport SMX to Las Vegas McCarran International Airport LAS
Distance
498 km (309 mi)
Typical flight time
55 min
On time
6 of the last 8
Average delay when late
31 min
Usually departs from
Gate 1

G4 21 FAQ

How long is the G421 flight?
The timetable allows 1 h 20 min. Santa Maria to Las Vegas is 498 km (309 mi).
How often is G421 late?
2 of the last 8 flights arrived 15 or more minutes late; when late, by 31 minutes on average.
Which terminal does G421 use?
It usually leaves from gate 1 at Santa Maria Public Airport (SMX) and arrives at Terminal 1 at Las Vegas McCarran International Airport (LAS). Check the flight card above for today's terminal and gate.
What other flight numbers does G421 have?
Also listed as AAY21 (Allegiant Air's ICAO code) and G4 21.

G421 and Santa Maria SMX to Las Vegas LAS Flights

Other flights arriving at Las Vegas LAS: G43180, WN2417, WN1219, AN7

All flights connecting Santa Maria SMX to Las Vegas LAS.