Boeing 777-300ER vs Boeing 787-9 Dreamliner: Cabin & Specs Comparison

Comparing the Boeing 777-300ER and Boeing 787-9 Dreamliner

Choosing between the **Boeing 777-300ER** and **Boeing 787-9 Dreamliner** can make a significant difference in your long-haul flight experience.

#### Specialist Analysis While both are capable long-haul performers, the cabin environment of the **Boeing 777-300ER** and **Boeing 787-9 Dreamliner** represents different generations of passenger comfort technology.

#### Seat Comfort The Boeing 777-300ER features an economy seat width of **17.0 inches**, while the Boeing 787-9 Dreamliner offers **17.3 inches**. For long flights, even half an inch can impact sleep quality. The **Boeing 777-300ER** has a significantly higher density configuration with **396 seats**, which may affect boarding times compared to the **Boeing 787-9 Dreamliner**.

#### Cabin Environment

• **Noise Level**: Boeing 777-300ER is rated as *Standard*, compared to the Boeing 787-9 Dreamliner's *Ultra Quiet (Composite)*.
• **Humidity**: The Boeing 777-300ER provides *Standard* air, which helps reduce jet lag symptoms.
• **Technology**: Proven aluminum-alloy reliability with standard cabin pressurization.

#### Technical Capabilities The Boeing Boeing 777-300ER has a range of **13,649 km**, whereas the Boeing Boeing 787-9 Dreamliner can fly **14,140 km**.