The best seats on an Airbus A350-900 depend on the airline, the seating configuration, and your personal preferences (e.g., extra legroom, proximity to exits, or quieter areas). Here’s a general guide:

1. Business Class

• Bulkhead Seats: These often provide more legroom and are the first to be served meals.

• Window Seats: Ideal for privacy and views; popular rows are near the middle of the cabin for reduced noise from galleys and lavatories.

• Middle Seats: Great for couples traveling together, offering a pair of side-by-side seats.

2. Premium Economy

• Front Row (Bulkhead): Extra legroom and easier access.

• Window Seats: For views and leaning space for longer naps.

• Avoid rows near lavatories or galleys for minimal disturbance.

3. Economy Class

• Exit Row Seats: Extra legroom, but some may have fixed armrests or reduced seat width due to tray tables.

• Front Rows in Each Economy Cabin: Often quieter with more space.

• Window or Aisle Preference: A window for views and leaning space or an aisle for easier access.

Seats to Avoid

• Near Lavatories and Galleys: Increased foot traffic and noise.

• Rear of the Plane: Can be noisier due to engines and turbulence.

• Middle Seats in the Center Section: Lack of access and views.

For specific recommendations, check the seating chart for the airline operating the A350-900, as configurations vary. Websites like SeatGuru can help with detailed reviews of seat locations.