Gulfstream G150 vs Learjet 40

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

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Gulfstream G150
56 ft × 57 ft ⭥ 19 ft
2× Jet Retractable Pressurized
Learjet 40
48 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 Gulfstream G150Learjet 40
Stall speed 110 kt119 kt
Approach speed 124 kt123 kt
Cruise speed 459 kt464 kt
Range 2950 nm1692 nm
Service ceiling 45000 ft51000 ft
Rate of climb 3340 fpm2820 fpm
Fuel burn 288.0 gph224.0 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.

Gulfstream G150 Jet A
288.0 gph
Baseline
2,950 nm range 1.6 nm/gal 1,537 gal usable $1,728 fuel/hr 5h 20m endurance
Gulfstream G150: 288.0 gph at cruise, 2,950 nautical mile published range, 5 hour 20 minute endurance, 1.6 nautical miles per gallon.
Learjet 40 Jet A
224.0 gph
Baseline
1,692 nm range 2.1 nm/gal 802 gal usable $1,344 fuel/hr 3h 34m endurance
Learjet 40: 224.0 gph at cruise, 1,692 nautical mile published range, 3 hour 34 minute endurance, 2.1 nautical miles per gallon.
Jet A range each cell = 1 hr of cruise · width scales with speed tank-dry · at this cruise burn

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 ground roll

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:
Gulfstream G150 Jet A
$3,557 /hr
Baseline
Gulfstream G150: $3,557 per flight hour — fuel $1,728, maintenance and reserve $1,829.
Learjet 40 Jet A
$3,334 /hr
Baseline
Learjet 40: $3,334 per flight hour — fuel $1,344, maintenance and reserve $1,990.
Gulfstream G150 Jet
$98,138 /yr Baseline
Gulfstream G150: $98,138 per year — insurance $43,738, hangar $51,900, annual inspection $2,500.
Learjet 40 Turbofan
$48,321 /yr Baseline
Learjet 40: $48,321 per year — insurance $15,559, hangar $30,262, 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

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Gulfstream G150 Jet
10 / 10 seats 1,537 gal / 1,537 gal fuel 752 lbs wet payload 11,050 lbs useful 26,100 lbs MTOW
Learjet 40 Turbofan
10 / 10 seats 802 gal / 802 gal fuel 2,237 lbs wet payload 7,610 lbs useful 20,350 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

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