Does Boeing 777-300 ER have lie flat seats in business class?

Yes, the Boeing 777-300ER typically features lie-flat seats in its business class cabin, especially in airlines that prioritize passenger comfort on long-haul flights. These seats can recline to a fully flat position, allowing for a more restful experience during travel. However, the specific seating configuration can vary by airline, so it's advisable to check with the carrier for exact details.