Learjet 35 vs Citation II: Two Light Jets That Defined an Era and Still Fly Today

The Two Jets That Built Light Charter

The Learjet 35A (1974-1994) and Cessna Citation II (1978-1996) were not just competitors. They were the aircraft that proved light jet charter could be a sustainable business. Before these two platforms, on-demand charter was dominated by turboprops and the few operators who could afford Sabreliner or early Learjet 20-series aircraft. The 35A and Citation II made light jet operations affordable enough that regional charter companies could build fleets around them, and both models accumulated enough airframe hours and service history to remain operational into 2026.

Cessna delivered over 600 Citation IIs (including the S/II and II/SP variants) between 1978 and 1996. Gates Learjet delivered approximately 665 Learjet 35A models between 1974 and 1994. Roughly 200 of each type remain in active service today, a testament to the durability of 1970s-era airframe engineering and the economics of operating a paid-for aircraft. Pre-owned prices have bottomed: functional Citation IIs trade between $400,000 and $900,000, and Learjet 35As between $500,000 and $1,100,000, placing both within reach of owner-operators who would otherwise fly turboprops.

Performance: Learjet Speed Against Citation Accessibility

The Learjet 35A is significantly faster. At 452 ktas max cruise, it outpaces the Citation II by 77 knots, a gap that translates to 25-40 minutes on a 2-hour domestic leg. The Learjet's range advantage of 480 NM means it covers coast-to-coast routing (New York to Los Angeles is roughly 2,150 NM) with comfortable reserves, while the Citation II requires a fuel stop. The Learjet 35A was, for its generation, a genuinely fast airplane that could compete on speed with midsize jets of the era.

The Citation II wins on short-field performance and fuel economy. Its 3,560-foot takeoff roll opens airports the Learjet cannot reach at gross weight. At 130 GPH versus the Learjet's 170 GPH, the Citation II saves 40 gallons per flight hour. At $7.00 per gallon, that is $280 per hour in fuel savings, or $56,000 annually at 200 hours. For operators running 3-4 short legs per day between regional airports, the Citation II's lower fuel burn and shorter runway requirement create a genuine economic advantage.

Cabin: Width and Height Matter at These Dimensions

Neither cabin is generous by current standards. Both are approximately 4.8-4.9 feet wide, narrower than a Phenom 300 (5.1 ft) or CJ4 (4.8 ft but with better interior finishing). The Citation II's 5-inch height advantage (4.8 ft vs 4.3 ft) matters more than the spec suggests. The Learjet 35A's cabin height of 4.3 feet means most adults cannot stand upright anywhere in the cabin. The Citation II's 4.8 feet allows limited standing for passengers under 5'8". In both aircraft, moving to the lavatory requires crouching.

The Citation II's cabin is 2.8 feet longer than the Learjet 35A's, and this extra length creates a meaningfully different experience for 4+ passengers. The Citation II accommodates a proper club-four arrangement plus two additional forward-facing seats. The Learjet 35A fits 6-8 passengers only by using every available seat, including side-facing seats that are uncomfortable for flights over 90 minutes. For 2-4 passengers, both cabins work. For 6+, the Citation II provides more realistic seating.

Operating Costs and Remaining Airframe Life

The Citation II costs less to operate in every category. Its JT15D engines are simpler, lighter, and cheaper to overhaul than the Learjet's TFE731 powerplants. A JT15D-4 overhaul runs $250,000-$300,000 per engine versus $350,000-$450,000 for a TFE731-2. Hot section inspections follow the same pattern: $60,000-$90,000 versus $80,000-$120,000. These maintenance costs are the dominant factor for owner-operators of paid-for aircraft, since the acquisition cost is already sunk.

Both airframes are approaching or have exceeded their original design life cycles. Learjet 35As with 15,000+ hours are common, and several have exceeded 20,000 hours with supplemental inspection programs. Citation IIs with 12,000+ hours are typical. Corrosion prevention, wing spar inspections, and pressurization cycle monitoring become increasingly important as these aircraft age. Buyers evaluating either type should budget $30,000-$60,000 for a thorough pre-buy inspection that includes ultrasonic spar testing and pressurization system evaluation.

Who Still Flies These Aircraft and Why

Learjet 35A: Medevac and Time-Critical Charter

The Learjet 35A's speed makes it the preferred platform for air ambulance and medevac operations. Its cabin accommodates a medical stretcher, attendant, and monitoring equipment. The 452-knot cruise speed means a patient transfer from a rural hospital to a Level 1 trauma center covers 800 NM in under 2 hours. Several medevac operators maintain fleets of 3-10 Learjet 35As specifically for this mission. The aircraft's speed also attracts time-critical cargo operators who need to deliver parts, documents, or biological samples overnight.

Citation II: Training, Light Charter, and Owner-Operator Entry

The Citation II serves as a training platform for pilots transitioning from turboprops to jets. FlightSafety International and CAE both offer Citation II type rating courses, and the aircraft's forgiving handling characteristics make it an effective training tool. Owner-operators who previously flew King Air 350s or Pilatus PC-12s step into Citation IIs as their entry into jet ownership, attracted by acquisition costs under $700,000 and operating costs comparable to a well-equipped turboprop. Light charter operators in secondary markets use Citation IIs for 1-3 hour regional flights where the aircraft's short-field capability and low fuel burn offset its modest speed.

Both aircraft occupy a market segment that modern manufacturers have largely abandoned. No current production light jet costs less than $4 million new. The Learjet 35A and Citation II provide jet capability at turboprop prices, a proposition that sustains demand despite airframe ages exceeding 30 years. The risk is maintenance surprise: a wing spar finding, corrosion issue, or engine event on a $600,000 aircraft can create a repair bill that exceeds the hull value.