Learjet 45 vs Learjet 70

Side-by-side specs, range, and operating costs.

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Learjet 45
48 ft × 58 ft ⭥ 14 ft
2× Turbofan Retractable Pressurized
Learjet 70
51 ft × 56 ft ⭥ 14 ft
2× Turbofan Retractable Pressurized

Flight Profile

Service ceiling, range, and climb rate.

Tap legend to isolate

Arc represents the climb-cruise-descent profile based on published service ceiling and range. Climb rate annotated on ascent. FL180 (18,000 ft) shown for reference.

Mission Performance

Stall, approach, cruise, range, ceiling and climb: best values are at the top.

Mission performance specifications
Specification Learjet 45Learjet 70
Stall speed 95 kt97 kt
Approach speed 123 kt126 kt
Cruise speed 445 kt465 kt
Range 1824 nm2060 nm
Service ceiling 51000 ft51000 ft
Rate of climb 2800 fpm4150 fpm
Fuel burn 205.0 gph199.0 gph

Each axis is scaled independently across the compared aircraft and printed in its own units; every vertex sits at the published figure. Higher is better on all axes: Stall, Approach and Fuel Burn are inverted (lower = higher). A missing figure breaks the line at that axis.

Fuel Burn & Range

Range, endurance, and what the fuel costs by the hour.

Learjet 45 Jet A
205.0 gph
Baseline
1,824 nm range 2.2 nm/gal 905 gal usable $1,230 fuel/hr 4h 24m endurance
Learjet 45: 205.0 gph at cruise, 1,824 nautical mile published range, 4 hour 24 minute endurance, 2.2 nautical miles per gallon.
Learjet 70 Jet A
199.0 gph
Baseline
2,060 nm range 2.3 nm/gal 905 gal usable $1,194 fuel/hr 4h 32m endurance
Learjet 70: 199.0 gph at cruise, 2,060 nautical mile published range, 4 hour 32 minute endurance, 2.3 nautical miles per gallon.
Jet A range each cell = 1 hr of cruise · width scales with speed

Bars show published still-air range: select a cell to view cruise-hours and fuel usage. Endurance is full tank at the displayed cruise burn rate; the extra is reserve and economy margin. Estimates only. Always verify against the POH.

Runway Performance

Density altitude adjusted estimates

Outside Air Temp
0°F57°F115°F
Field Elevation
SL4,0008,000 ft

Takeoff over 50 ft obstacle

Landing over 50 ft obstacle

Density Altitude

Monte cristo

Base distance DA penalty
Scale: 6,000 ft

FAA 10%/1,000 ft DA rule of thumb (FAA-H-8083-25B). Turboprops and jets are less sensitive in practice. Always verify against the POH.

Estimated Operating Costs

Hourly direct and annual fixed costs

Scale:
Learjet 45 Jet A
$3,370 /hr
Baseline
Learjet 45: $3,370 per flight hour — fuel $1,230, maintenance and reserve $2,140.
Learjet 70 Jet A
$3,154 /hr
Baseline
Learjet 70: $3,154 per flight hour — fuel $1,194, maintenance and reserve $1,960.
Learjet 45 Turbofan
$54,442 /yr Baseline
Learjet 45: $54,442 per year — insurance $20,571, hangar $31,371, annual inspection $2,500.
Learjet 70 Turbofan
$95,843 /yr Baseline
Learjet 70: $95,843 per year — insurance $44,743, hangar $48,600, annual inspection $2,500.

Estimates only. Hourly direct operating cost, based on fuel price and reserves; Annual fixed costs (insurance, hangar, and inspection). Costs vary by location, pilot profile, and market conditions. See individual aircraft pages for source notes.

Capability & limits

Payload vs useful load limit

+ cargo
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Learjet 45 Turbofan
11 / 11 seats cargo 905 gal / 905 gal fuel 796 lbs wet payload 6,860 lbs useful 21,500 lbs MTOW
Learjet 70 Turbofan
9 / 9 seats cargo 905 gal / 905 gal fuel 1,546 lbs wet payload 7,610 lbs useful 21,500 lbs MTOW

Shows selected occupants against full fuel, within the aircraft's useful-load limit. Fuel weight at 6.7 lb/gal jet-A, 6.0 lb/gal avgas; pax and luggage are 190 + 30 . Change payload weights in global settings.

Payload-Range Map

Origin: → · two fingers to move map

+ cargo
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