Bombardier Challenger 3500 vs Bombardier Challenger 650 vs Gulfstream G280 vs Gulfstream G400

The Bombardier Challenger 3500 and Gulfstream G280 sit in the super‑midsize category, while the Bombardier Challenger 650 is a large‑cabin jet and the Gulfstream G400 is a newer large‑cabin/long‑range model. In range, the Challenger 3500 and G280 are broadly comparable at roughly mid‑to‑high‑3,000‑nautical‑mile capability, suited to many transcontinental missions but generally not true intercontinental flying with full payload. The Challenger 650 typically stretches farther, around the low‑4,000‑nautical‑mile class, enabling more coast‑to‑coast plus or select North Atlantic city pairs with favorable conditions. The Gulfstream G400 is designed for a higher long‑range tier, around the mid‑4,000‑nautical‑mile class, providing more consistent intercity reach and reserves. For passenger capacity, all can be configured for about 8–10 travelers in typical layouts; the larger‑cabin Challenger 650 and G400 more often support 10–12 in greater comfort and with more baggage volume, while the Challenger 3500 and G280 commonly emphasize 8–10 with efficient cabin footprints.