この飛行機はすいてますか？って英語でなんて言うの？

There are many ways to ask airline staff if a flight is full, or if there are more seats available. The most simple way would be "Is this flight full?" Another way to say it is "Is this flight fully booked?" with "fully booked" meaning that all of the seats are reserved and there are no more available. Depending on how friendly the staff member is, they might just give you a simple yes or no answer for both of these question forms. So if you are hoping to find out about how many seats are still available, you might want to ask "Are there any seats left on this flight?" In this form, they might be encouraged to tell you that there are a few seats left, or maybe many seats left if it is not a crowded flight.

Is the plane crowded? - The word "crowded" means that there are a lot of people or things in one area. For example "Time Square in New York is always crowded". How full is the flight? - The word "full" means reaching maximum amount. The person could reply with "It's not that full" or "it's pretty full". Are there many seats left on the plane? - The word "left" in this sentence is not a direction but rather how many seats on the plane that are still available.

When talking about how many people will be attending or going on something, to find out how many people will be doing this we can ask 'how full' or 'how busy' something will be To ask in a nice polite way we can add please

When we say "pretty crowded" it is implied that the flight is already somewhat full. That is to say not completely full but almost and with many people. "Available seats" refers to the seats that are accessible and not occupied by anyone else. When we say "Much room" we are portraying that we already know that the plane is filling up and that many seats are already taken.

Is it a full flight? is the direct way to enquire if the plane will be crowded or not, however, it will only encourage a yes or no answer and wont give you any idea as to how full or empty it is. Asking if there are many empty seats or if all seats are all taken are more indirect ways to ask about how full the plane and may prompt the assistant to tell you how full or empty the flight is.

"Are there still seats available on this plane?": We use 'are' because it 'seats' is a plural. This question clearly shows that you are interested is reserving one of these seats. "Can I still book a seat on this flight?": to book in this context is a verb which means 'to reserve a place'. Therefore, the question means that you want to reserve a place of the plane. "Is the flight fully booked?": This means 'are all of the seats on the plane already reserved".