朝食まであと何時間ぐらいですかって英語でなんて言うの？

"Excuse me, What time is breakfast served?" This asks the flight attendant to tell you what time they will serve you breakfast. "Excuse me, Can you tell me how long until breakfast is served?" This politely asks the flight attendant to tell you how long it is until they will serve breakfast.

If you want to ask about the duration of something, you may use the form "How long...." If you want to ask about the duration of time from the present until something begins or occurs, then you may use the form: "How long before...?" or "How long until..?" Alternatively, in order to be totally precise, you may just ask: "What time..?" or "When..?" "What time's the next train arrive?"

Both of these examples will show that you are wanting the time of breakfast. If you would like to know the specific amount of hours, you would ask "How many hours until...?"

"What time is breakfast served?" Served means when a meal is to be given to you. Here you are asking the time of when breakfast will be served. "When will breakfast be served?" This is just another way of asking when you will be served breakfast.

The words 'long' and 'soon' reference to the amount of time until breakfast. This is a good indication for the flight attendants to respond with a length of time for you, or perhaps even offer you a snack.

If you want to ask someone a question and get their attention then a polite way to do this is to say 'excuse me' a simply way to ask this would be 'excuse me, when will breakfast be served' this will tell you the time if you ask 'how long will it be until breakfast is served?' this will tells you how long in hours or minutes

"At what time?" is a commonly used phrase that is used to ask what time something will be, "What time is your flight?" "What time do you start work?" "How long until?" is the question that is asking how many hours/minutes etc until something will happen, in this case, breakfast.