Saya menunggu Ayah di bagian kedatangan bandara.

Tunggu is the basic root, but in a normal full sentence Indonesian often uses the meN- form for an active verb. So menunggu is the standard active form meaning to wait for.

Compare:

• Saya menunggu Ayah. = a normal statement
• Tunggu! = Wait! as a command

So in this sentence, menunggu is the expected form.

When ayah is used like a name or title, it is often capitalized, just like Dad in English.

So:

• Saya menunggu Ayah. = I’m waiting for Dad.
• Saya menunggu ayah saya. = I’m waiting for my father.

Both are possible, but the capitalized form feels more like directly referring to him as Dad rather than describing him as my father.

Indonesian often leaves out possessives when the meaning is already clear from context, especially with family words.

So Ayah by itself can naturally mean Dad / my dad if the speaker is talking about their own father.

If you want to be more explicit, you can say:

• ayah saya = my father
• Ayah saya = my dad

But leaving out saya is very common.

Here di is a preposition meaning in / at, so it must be written as a separate word:

• di bagian kedatangan = in the arrivals section

This is different from the prefix di-, which is attached to a verb in passive forms:

• ditunggu = is waited for
• dibuka = is opened

A useful rule:

• di
  • place = separate
• di-
  • verb = attached

Datang means to come / arrive.
Kedatangan is a noun formed from datang, and it means arrival or arrivals depending on context.

So:

• datang = to arrive
• kedatangan = arrival / arrivals

In this sentence, bagian kedatangan means something like the arrivals section or arrival area.

Indonesian usually puts the main noun first, followed by words that describe it.

So the structure is:

• bagian = section/part
• kedatangan = arrival(s)
• bandara = airport

Literally, it is something like:

section + arrivals + airport

A natural English equivalent is the airport arrivals section or the arrivals area of the airport.

This head-first pattern is very common in Indonesian.

Indonesian does not normally use articles like a, an, or the the way English does.

So bagian kedatangan bandara can mean:

• the airport arrivals section
• an airport arrivals section

The exact meaning depends on context. In real use, listeners usually understand which one is meant without needing a separate word for the.

Because menunggu already means to wait for. The idea of for is built into the verb.

So:

• Saya menunggu Ayah. = I am waiting for Dad.

You do not say menunggu untuk Ayah for this meaning.

This is a common thing to remember: some Indonesian verbs match an English verb + preposition combination.

Yes. Both mean I, but they differ in style.

• Saya = more neutral, polite, standard
• Aku = more informal, personal, casual

So:

• Saya menunggu Ayah... sounds neutral and safe in most situations.
• Aku menunggu Ayah... sounds more casual and intimate.

A learner will usually do well using saya first.

Not exactly.

• Ayah means father / dad
• Bapak can mean father, but it is also widely used as Mr. / Sir for adult men

So if you are specifically talking about your own dad in a family context, Ayah is very natural.
If you say Bapak, it can sound more formal depending on the context.

In casual conversation, yes, if the subject is obvious from context. For example, someone might simply say:

• Menunggu Ayah di bagian kedatangan bandara.

That can sound natural in speech if everyone already knows who is speaking and what is happening.

But in a complete, clear sentence—especially for learners—keeping Saya is better.

No. It is understandable and natural enough, but Indonesian has several ways to express this idea, such as:

• di bagian kedatangan bandara
• di area kedatangan bandara
• di bagian kedatangan di bandara

Learners should understand that Indonesian often allows more than one natural phrasing for locations like this. The sentence you have is perfectly usable, even if another speaker might choose a slightly different wording.