FFT9421

SAN → DEN · Airbus A321 Neo · Frontier Airlines

For travellers

Arrival · Denver (DEN)

Scheduled 29 Sep 14:56 · Landed 29 Sep 15:32 · +36 min

Board status: Arrived

Landed 29 Sep 15:23 (ADS-B)

Board data from den, updated 3096 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

San Diego International Airport (SAN) — San Diego, United States

Departed

2026-09-29 19:28 UTC

Arrival

Denver International Airport (DEN) — Denver, United States

Scheduled arrival

2026-09-29 20:56 UTC

Estimated arrival

2026-09-29 21:22 UTC

Also flies as

F99421

Distance flown

1461 km

Straight-line distance

1371 km

Approach distance

43 km

Aircraft

Registration

N621FR

Type

Airbus A321 Neo

Seats

240 total (240 Economy)

CO2 (EMEP est., total)

35.5 t (148 kg/pax Economy)

Altitude & speed

Max altitude

39,050 ft

Max ground speed

533 kt

Tracked

1h 55m · 1,458 km

Altitude (ft, max 39,050)

Ground speed (kt, max 533)

Altitude (ft, max 39,050)

Ground speed (kt, max 533)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

Frontier Airlines (FFT)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-09-30 05:31 UTC	FFT9421	DEN → SEA Denver → Seattle	N721FR	Airbus A321	Completed	1716 km
2026-09-29 19:28 UTC	FFT9421	SAN → DEN San Diego → Denver	N621FR	Airbus A321 Neo	Completed	1461 km
2026-09-10 02:51 UTC	FFT9421	MCO → PHL Orlando → Philadelphia	N648FR	Airbus A321 Neo	Completed	1595 km
2026-08-27 13:30 UTC	FFT9421	LAS → SAN Las Vegas → San Diego	N721FR	Airbus A321	Completed	568 km

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