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Dassault Falcon 8x vs Gulfstream G400 vs Gulfstream G600

The Dassault Falcon 8X, Gulfstream G400, and Gulfstream G600 all sit in the long-range business jet market, but they span different tiers. The Falcon 8X is typically considered an ultra-long-range, large-cabin trijet, optimized for very long nonstop missions and operational flexibility; it is commonly configured for roughly 12–16 passengers (with maximum layouts higher). The Gulfstream G400 is positioned as a large-cabin, long-range jet below the G500/G600 class, aimed at transcontinental-plus missions; typical seating is also around 12–16 passengers, depending on cabin layout. The Gulfstream G600 steps up as an ultra-long-range, large-cabin aircraft with greater intercontinental reach than the G400; it is commonly configured for about 13–17 passengers (again with higher maximums possible). In range terms, the Falcon 8X and G600 are closer peers, each offering true intercontinental capability, while the G400 generally delivers somewhat shorter—but still long-range—nonstop performance within a large-cabin footprint.

SpecDassault Falcon 8XGulfstream G400Gulfstream G600
Summary
Cockpit2—2
DOC / nm$ 7.66—$ 9.28
Min Crew244
Total Seats171212
ManufacturerDassault FalconGulfstreamGulfstream
Aircraft Name8XG400G600
CertificationFAA / EASA—FAA
Max Range (nm)645042006500
DOC / nm / Seat$ 0.64—$ 0.93
Max Cabin Seats161919
OEM VerificationVERIFIED—Un-Verified
Useful Load (lbs)369003065040560
Standard Cabin Seats14—10
Direct Operating Cost$ 3,805—$ 4,789
Flight Deck (Base Spec)Honeywell Primus EASy IIGulfstream Symmetry Flight DeckGulfstream Symmetry Flight Deck
Max Cruise Speed (ktas)516539516
Base Aircraft Price (USD)$ 62,500,00034500000$58,500,000
Cabin
Cockpit3—2
Lavatory2 Enclosed Flushing—2 Enclosed Flushing
Min Crew2—4
Crew RestNo—Yes
Jump SeatYes—Yes
Total Seats17—12
Galley LocationFWD—FWD
Max Cabin Seats16—19
Lavatory LocationFWD / AFT—FWD / AFT
Cabin Pressure (psi)10.2—10.7
Galley / RefreshmentGalley—Galley
Standard Cabin Seats14—10
SL Cabin Altitude (ft)29200—31900
Max Cabin Altitude (ft)3900——
Engine
FADECYes—Yes
ModelPW307D—PW815GA
TBO (hrs)On-Condition—10000
Flat RatingISA + 17—ISA + 15
Thrust (lbs)6722—15680
No. of Engines3—2
Dimensions
Length (ft)80.2—96.1
Wingspan (ft)86.3—94.1
Cabin Width (ft)7.7—7.6
Cabin Height (ft)6.2—6.4
Cabin Length (ft)42.7—45.2
Overall Height (ft)26.1—25.3
Cabin Volume (cu. ft)1695——
Cabin Width - Floor (ft)6.3—6.1
Cabin Length - Seating (ft)29.2—30.2
Baggage Volume Int. (cu. ft)140—230
Aisle Step (ft)——Flat Floor