Die Ankunft ist wegen der Verspätung erst morgen.

Ankunft is a noun meaning arrival, and it is feminine in German, so its dictionary form is die Ankunft.

In this sentence, die Ankunft is the subject, so it stays in the nominative case:

• die Ankunft = the arrival

This is a good example of how German often uses a noun where English might prefer a verb. Instead of saying someone arrives tomorrow, German can say the arrival is tomorrow.

Because die Ankunft is a noun, German uses sein here:

• Die Ankunft ist morgen.

That is structurally like saying:

• The arrival is tomorrow.

If you used a verb like ankommen, you would need a different structure, for example:

• Wir kommen erst morgen an. = We are only arriving tomorrow.
• Der Zug kommt erst morgen an. = The train is only arriving tomorrow.

So ist is correct because the sentence is built around the noun Ankunft, not around a person or thing actively arriving.

Wegen means because of or due to.

So:

• wegen der Verspätung = because of the delay / due to the delay

It introduces the reason for the late arrival.

Traditionally, wegen takes the genitive case.

So:

• die Verspätung → nominative
• der Verspätung → genitive

That is why the sentence has:

• wegen der Verspätung

A useful thing to know: in everyday spoken German, many people use wegen with the dative, especially in informal speech. But in standard written German, genitive is the usual choice.

In this particular sentence, though, der Verspätung does not help you distinguish much, because for this feminine noun, the article der is the same in both genitive and dative singular.

Verspätung means delay.

It comes from the adjective spät = late.

Related forms:

• spät = late
• sich verspäten = to be late
• die Verspätung = the delay / lateness

You will see Verspätung very often in travel contexts:

• Der Zug hat Verspätung. = The train is delayed.
• Wegen Verspätung... = Due to a delay...

Here, erst means something like not until, only, or as late as.

So:

• erst morgen = not until tomorrow / only tomorrow

It adds the idea that tomorrow is later than expected.

Compare:

• Die Ankunft ist morgen. = The arrival is tomorrow.
• Die Ankunft ist erst morgen. = The arrival is not until tomorrow.

That small word erst is very common and very important.

Because here morgen is an adverb, meaning tomorrow.

In German, adverbs are not capitalized:

• morgen = tomorrow

Compare that with the noun:

• der Morgen = the morning

So:

• morgen = tomorrow
• am Morgen = in the morning

That is why the sentence has morgen with a lowercase m.

German word order is flexible, but the default idea here is:

• Die Ankunft = subject
• ist = verb in second position
• wegen der Verspätung = reason
• erst morgen = time

This order sounds natural and clear.

You can move parts around for emphasis, as long as the conjugated verb stays in second position in a main clause. For example:

• Wegen der Verspätung ist die Ankunft erst morgen.
• Erst morgen ist die Ankunft wegen der Verspätung.
  This is grammatically possible, but less natural in most contexts.

So the original sentence is a normal, natural choice.

Yes, it is grammatical and natural, especially in a somewhat formal or informational context, such as announcements, travel updates, or written notices.

It sounds a bit more formal than everyday speech because it uses the noun Ankunft. In casual conversation, Germans might more often use a verb-based sentence, for example:

• Wir kommen wegen der Verspätung erst morgen an.
• Der Zug kommt wegen der Verspätung erst morgen an.

So the original sentence is fine, but its style is slightly more formal or official.

Yes.

German often moves adverbial phrases to the front for emphasis. You could say:

• Wegen der Verspätung ist die Ankunft erst morgen.

That puts more focus on the reason.

Both versions are correct:

• Die Ankunft ist wegen der Verspätung erst morgen.
• Wegen der Verspätung ist die Ankunft erst morgen.

The meaning stays the same; the emphasis changes slightly.

Because morgen here is not a noun phrase. It is an adverb of time.

Adverbs do not take articles or case endings the way nouns do. So:

• morgen = tomorrow
• erst morgen = not until tomorrow

If it were a noun, you would see something like:

• der Morgen = the morning
• am Morgen = in the morning

But in this sentence, morgen is simply an adverb, so it stays unchanged.