F9MX721

SAT → DEN · Airbus A321 · Frontier Airlines

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

San Antonio International Airport (SAT) — San Antonio, United States

Departed

2026-09-29 01:19 UTC

Arrival

Denver International Airport (DEN) — Denver, United States

Distance flown

1365 km

Straight-line distance

1280 km

Approach distance

42 km

Registration

Type

Airbus A321

Seats

230 total (200 Economy, 30 Stretch)

Max altitude

36,025 ft

Max ground speed

464 kt

Tracked

6h 52m · 1,364 km

Altitude (ft, max 36,025)

Ground speed (kt, max 464)

Altitude (ft, max 36,025)

Ground speed (kt, max 464)

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.

Frontier Airlines (FFT)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-09-29 01:19 UTC	F9MX721	SAT → DEN San Antonio → Denver	N721FR	Airbus A321	Completed	1365 km
2026-09-14 15:12 UTC	F9MX721	DEN → DEN Denver → Denver	N721FR	Airbus A321	Completed	~6 km est. (4 km recorded)
2026-09-14 00:23 UTC	F9MX721	ATL → DEN Atlanta → Denver	N721FR	Airbus A321	Completed	2097 km