UNITED AIRLINES INC· ICAO24 a3d302· last seen 5d ago

N34551 is an Airbus A321 Neo, a twin-engine jet operated by UNITED AIRLINES INC. SkyMeter has tracked 1,692 flights totalling 4,384 hours of airtime via ADS-B across 394 callsigns. The most frequent segment is KORD to KDEN. Service window in our records spans 244 days. Of those flights, 18 (1.1%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Airbus A321 Neo has a 118 ft wingspan, a maximum takeoff weight of 209,439 lb.

About the Airbus A321 Neo

The Airbus A321neo is the stretched, re-engined variant of the A320 family and the best-selling single-aisle airliner in production today. Launched in 2010 and entering service in 2016, the neo (new engine option) pairs the A321's fuselage with either CFM LEAP-1A or Pratt & Whitney PW1100G geared turbofans, delivering 15-20% better fuel efficiency and significantly lower noise than the original ceo (current engine option) models. With seating for 180-220 passengers in typical two-class layouts and a range exceeding 4,000 nautical miles in the long-range A321LR and A321XLR configurations, it has become the workhorse of choice for low-cost carriers and legacy airlines alike, bridging the gap between narrowbody efficiency and widebody range on transatlantic and transcontinental routes.

The A321neo's success stems from its versatility: it can operate dense short-haul European shuttles, serve thin long-haul markets that don't justify a widebody, and slot smoothly into existing A320-family fleets with common type ratings and ground equipment. Its maximum takeoff weight of 206,132 pounds and cruise speed of Mach 0.78 make it competitive with the Boeing 737 MAX 10, though the Airbus holds a commanding lead in orders and deliveries. The type has proven especially popular in India, the Middle East, and North America, where carriers prize its combination of capacity, range, and operating economics.

SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
1,692
all time
FLOWN HOURS
4,384
tracked time
📍
AIRPORTS VISITED
49
unique
📡
CALLSIGNS
394
133 routes
📅
SERVICE PERIOD
11/17/2025 → 07/19/2026
first → last
INCIDENT RATE
1.1%
18 flagged

Top routes

By flight count

10
29
28
27
25
21
20
19
19
18
17

Aircraft specifications

Airbus A321 Neo

Engines
Twin Jet
Vref (approach)
136 kt
Vmo
350 kt
MTOW
209,439 lb
Wingspan
118 ft
Length
146 ft
Wake category
Medium

Recent flights

Newest 50 operations of N34551

50
07/09/2026
2h 21m
↻ Go-around
© SkyMeter · All flight data subject to ODbL attribution