# The Boeing 777-300ER entered service in 2004 as what many considered the ultimate evolution of Boeing’s original 777 concept.

*aerospace · news · 2026-05-06 · Simple Flying*

## Key points

- Boeing reduced the 777-300ER's baseline weight by about 1,200 lbs through structural refinements.
- The GE90-115B engine on the 777-300ER received multiple efficiency and reliability performance improvements over time.
- Subtle aerodynamic changes, such as divergent trailing edges and tail skid revisions, improved fuel performance.
- Cabin retrofits now include 4K OLED screens, Starlink WiFi, and wireless charging in refurbished 777-300ERs.
- The 777X program delays have driven airlines to upgrade, rather than retire, existing 777-300ERs.

**Companies:** Boeing, Emirates, Qatar Airways, American Airlines, Korean Air, United Airlines, Ethiopian Airlines
**Countries:** United States, United Arab Emirates, Qatar, South Korea, India, Ethiopia

[Read the full story on Simple Flying](https://simpleflying.com/how-boeing-777-300er-quietly-transformed/)

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