How the 777-300ER fits into the 777 story
777-300ER is the representative branch of the Boeing 777 family, capturing the high-capacity long-range branch that anchored the family’s global dominance.
This page isolates the 777-300ER branch of the Boeing 777 family, focusing on the engines, service entry, seating, range, and mission role that justify a dedicated variant page while keeping the family history on the canonical parent URL.
Service entry
2004
Seating
365 to 396
Range
7,370 nm
Variant history
Why it branches from the family
The 777-300ER is treated as the representative branch because it captures the high-capacity long-range branch that anchored the family’s global dominance.
Variant pages stay intentionally narrower than the family page so differences in cabin, engines, mission, and market role remain clear without duplicating the full program history.
Fact rows
Reference snapshot
- ICAO designator
- B77W
- Designator references
- Engines
- GE90-115B
- Type data
- Service entry
- 2004
- Operator records
- Typical seating
- 365 to 396
- Operator layouts
- Range
- 7,370 nm
- Planning data
Return to the family page
Variant pages stay intentionally narrower than family pages. They isolate meaningful technical or commercial differences while the canonical family page holds the broader historical narrative.