G600 vs G650: how the two fleets are really flown
On all four chapters' lead measures, the gap inside each fleet is bigger than the gap between the G600 and the G650. On flights a month, the middle half of G600s runs 4–9 and of G650s 5–9; the medians are 6 and 7.
Gulfstream G600 fleet statistics →Gulfstream G650/G650ER fleet statistics →
Fatigue
On hours per landing, the gap between the types is smaller than the spread inside either fleet: the middle G650 at 2.5 : 1, the middle G600 at 2.3 : 1.
What each landing and pressurization cycle costs the structure: landings per hour and short hops.
Hours per landing
Where the two fleets sitSide by side
Every active aircraft of each type in North America: 137 G600s and 314 G650s.| Measure | G600 median | Middle half | G650 median | Middle half |
|---|---|---|---|---|
| Hours per landing Each aircraft’s average flight hours per landing | 2.3 : 1 | 1.8–2.6 : 1 | 2.5 : 1 | 2.0–3.0 : 1 |
| Short hops Share of legs under 300 nm | 31% | 20–39% | 30% | 23–42% |
| Leg length Median leg | 635 nm | 459–757 nm | 654 nm | 469–906 nm |
Corrosion
On salt air, the two fleets' medians match, at 3%.
What the air around the fleet does overnight: salt, damp and freeze–thaw.
Salt air
Where the two fleets sitSide by side
Aircraft we can place on enough nights at known fields: 102 G600s and 254 G650s.| Measure | G600 median | Middle half | G650 median | Middle half |
|---|---|---|---|---|
| Salt air Nights within 2 km of the coast | 3% | 1–6% | 3% | 1–8% |
| Near the coast Nights within 10 km of the coast | 14% | 7–35% | 29% | 11–65% |
| Damp air Hours a day at 80% humidity or more, above freezing | 7.4 h | 6.0–8.6 h | 7.7 h | 6.6–9.1 h |
| Freeze–thaw Nights that froze and thawed within the day | 7% | 3–16% | 6% | 2–12% |
| Moisture in the air Average absolute humidity overnight | 9.3 g/m³ | 7.8–10.6 g/m³ | 9.3 g/m³ | 8.3–10.4 g/m³ |
Engines and brakes
On short runways, the gap between the types is smaller than the spread inside either fleet: the middle G650 at 37%, the middle G600 at 35%.
What departures ask of engines, brakes and tires: heat and height, and runway length.
Short runways
Where the two fleets sitSide by side
Departures we could assess: 137 G600s and 313 G650s.| Measure | G600 median | Middle half | G650 median | Middle half |
|---|---|---|---|---|
| Short runways Departures where the longest runway was under 1.25× the takeoff distance | 35% | 20–49% | 37% | 24–53% |
| Hot, high takeoffs Departures at 5,000 ft density altitude or more | 3% | 1–6% | 3% | 1–6% |
| Density altitude Typical density altitude at takeoff | 1,172 ft | 922–1,471 ft | 1,079 ft | 781–1,409 ft |
Utilization
On flights a month, the gap between the types is smaller than the spread inside either fleet: the middle G650 at 7, the middle G600 at 6.
How steadily each fleet is used: flights, flying days and estimated hours.
Flights a month
Where the two fleets sitSide by side
Every active G600 (137) and every active G650 (314). Each type uses the tracking rule its own fleet page uses.| Measure | G600 median | Middle half | G650 median | Middle half |
|---|---|---|---|---|
| Flights a month In the months it flew | 6.3 | 4.4–8.9 | 6.7 | 4.9–9.5 |
| Days flown a month Days with at least one flight | 4.9 | 3.3–6.5 | 5.1 | 3.7–6.8 |
| Estimated hours a year From time in the air | ≈171 h | 122–242 h | ≈199 h | 139–271 h |
Choosing between a G600 and a G650?
Check both tails, not the types.
Enter the two tails on your shortlist. TailCheck grades each one on Fatigue, Corrosion, Engines and brakes, and Utilization against its own type, then puts them side by side.
Trip-length mix
Both fleets flew 33% of their legs under 300 nm; 35% of G600 legs and 39% of G650 legs were over 900 nm.
| Leg length (nm) | G600 | G650 |
|---|---|---|
| <150 | 15% | 17% |
| 150–300 | 18% | 16% |
| 300–450 | 9% | 8% |
| 450–600 | 8% | 7% |
| 600–900 | 15% | 13% |
| 900–1,200 | 10% | 10% |
| 1,200–1,800 | 9% | 8% |
| 1,800+ | 16% | 21% |
Share of legs by length in nautical miles, 1 Aug 2025 – 31 Jul 2026: 10,608 legs by 137 G600s and 25,932 legs by 314 G650s, every leg with a known distance. The G600's trips bunch at 150–300 nm, the G650's at 1,800+ nm.
G600 vs G650: on paper
Certified figures come from each type certificate data sheet, the rest from the manufacturer. Each figure names its source; a range covers the variants one page tracks together; a dash means we don’t have a source for that figure yet.
| Measure | G600 | G650/G650ER |
|---|---|---|
| Range (manufacturer) | 6,600 nmManufacturer (spec page, Web page, retrieved 22 Oct 2026) | 7,000–7,500 nmManufacturer (archived spec page, 14 Jun 2023) |
| High-speed cruise (manufacturer) | Mach 0.90Manufacturer (spec page, Web page, retrieved 22 Oct 2026) | Mach 0.90Manufacturer (archived spec page, 14 Jun 2023) |
| Takeoff distance (manufacturer) | 5,700 ftManufacturer (spec page, Web page, retrieved 22 Oct 2026) | 5,858–6,299 ftManufacturer (archived spec page, 14 Jun 2023) |
| Cabin length (manufacturer) | 45 ft 2 inManufacturer (spec page, Web page, retrieved 22 Oct 2026) | 46 ft 10 inManufacturer (archived spec page, 14 Jun 2023) |
| Maximum takeoff weight (certified) | 94,600 lbEASA TCDS EASA.IM.A.595 Issue 15, p.22 | 99,600–103,600 lbEASA TCDS EASA.IM.A.169 Issue 17, p.17 |
| Fuel capacity (certified) | —Not in our sources yet | 44,200–48,200 lbEASA TCDS EASA.IM.A.169 Issue 17, p.14 |
| Maximum operating altitude (certified) | 51,000 ftEASA TCDS EASA.IM.A.595 Issue 15, p.21 | 51,000 ftEASA TCDS EASA.IM.A.169 Issue 17, p.14 |
| Passenger seats (certified) | Up to 19EASA TCDS EASA.IM.A.595 Issue 15, p.23 | Up to 19EASA TCDS EASA.IM.A.169 Issue 17, p.18 |
G600 vs G650: questions
Which is flown more, the G600 or the G650?
The G650, by about 28 estimated hours a year: the middle G650 flew ≈199 h a year, the middle G600 ≈171 h. That is a fleet median: the middle half of G650s logged 139–271 h and of G600s 122–242 h, so one aircraft can sit far from its type. In flights, the medians are 6 a month for the G600 and 7 for the G650.
Which lands more often for its hours, the G600 or the G650?
The G600: its middle aircraft flies 2.3 hours per landing, against 2.5 for the G650, 0.2 hours fewer per landing. More landings per hour means more pressurization cycles for the same time in the air. Short hops, legs under 300 nm, make up 31% of the middle G600's legs and 30% of the middle G650's.
Which flies longer trips, the G600 or the G650?
The G650, by 19 nm on the median leg: 654 nm for the middle aircraft, against 635 nm for the G600. Both fleets flew 33% of their legs under 300 nm; 35% of G600 legs and 39% of G650 legs were over 900 nm.
Which spends more nights by the sea, the G600 or the G650?
About the same: the middle aircraft of both types spends 3% of its nights within 2 km of the coast. Salt air is one of the corrosion inputs a TailCheck report grades for one aircraft against its own type.
Which has the longer range on paper, the G600 or the G650?
The manufacturers quote 6,600 nm for the G600 and 7,000–7,500 nm for the G650. Those are book figures at stated conditions; how far the fleets actually fly is in the trip-length mix above.
Does this comparison include the G650ER?
Yes. The tracking data doesn't tell the G650 and G650ER apart, so the G650 figures here cover all of them. The specs table names a figure’s variants where the sources separate them.
Cite this data
The Aircraft Ledger. “Gulfstream G600 vs Gulfstream G650/G650ER.” Data to 31 July 2026. theaircraftledger.com/compare/gulfstream-g600-vs-gulfstream-g650
Method: G600s and G650s with most departures in North America, ADS-B tracking. Flight measures cover 1 Aug 2025 – 31 Jul 2026; each figure is the median of its own fleet, with the middle half (25th–75th percentile). Estimated hours from time in the air. We assume the longest runway at each field, so short-runway figures are conservative. Specifications from type certificate data sheets and the manufacturers, each cited. About our data