Flynummeret står på boardingkortet.

Because Danish, like the other Scandinavian languages, very often forms compound nouns as a single word.

• fly = flight / airplane
• nummer = number
• flynummer = flight number

English usually writes this as two words, but Danish normally joins them. The same pattern appears in many everyday words, so compounds are something English speakers need to get used to in Danish.

A useful rule:

• the last part of the compound is the main noun
• that last part decides the grammatical gender and how the word behaves

So flynummer behaves like nummer.

The ending -et is the definite article for many neuter nouns in Danish. It corresponds to English the.

So:

• et flynummer = a flight number
• flynummeret = the flight number

and

• et boardingkort = a boarding pass
• boardingkortet = the boarding pass

So the sentence is using the definite form of both nouns:

• flynummeret = the flight number
• boardingkortet = the boarding pass

In Danish, the definite article is usually attached to the end of the noun instead of standing in front of it.

Compare:

• English: the flight number

• Danish: flynummeret

• English: the boarding pass
• Danish: boardingkortet

This is very normal in Danish. English speakers often expect a separate word like the, but Danish usually builds that meaning into the noun itself.

The dictionary forms are:

• et flynummer
• et boardingkort

The word et tells you these are neuter nouns.

That matters because neuter nouns typically take:

• et in the indefinite singular
• -et in the definite singular

So:

• et flynummer → flynummeret
• et boardingkort → boardingkortet

Yes, literally står means stands. But in Danish it is also very common to use stå for information that is written, printed, or shown somewhere.

So in this sentence, står means something like:

• is written
• appears
• is shown

That is why Flynummeret står på boardingkortet is natural Danish.

A very literal translation would be:

• The flight number stands on the boarding pass

But natural English would usually say:

• The flight number is on the boarding pass
• The flight number is written on the boarding pass

Yes, you probably could, and people would understand you. But står is more idiomatic when talking about information that is written or printed.

The difference is roughly:

• er på = is on
• står på = is written on / appears on

So står is the more natural choice if you are referring to text or printed information.

På usually means on.

Here it is used because the flight number appears on the boarding pass as written information. That matches English quite closely:

• på boardingkortet = on the boarding pass

Danish often uses på with physical surfaces, documents, screens, signs, tickets, and other places where information appears.

For example:

• Det står på skærmen = It is written on the screen
• Det står på billetten = It is written on the ticket

This sentence has normal Danish main-clause word order:

• Flynummeret = subject
• står = verb
• på boardingkortet = prepositional phrase

So the pattern is:

subject + verb + other information

That gives: Flynummeret står på boardingkortet.

This is straightforward and similar to normal English word order.

A useful Danish rule is that in a main clause, the finite verb normally comes in second position. Here, the subject comes first, so the verb naturally comes right after it.

Yes. It is a common modern Danish word, and it is based on English, but it behaves like a normal Danish noun.

So you can treat it grammatically just like other Danish nouns:

• et boardingkort
• boardingkortet
• boardingkort in compounds or normal usage

Danish uses many loanwords, especially in travel, technology, and business, and once they are part of the language, they usually follow normal Danish grammar.

Because the meaning is that the information is written on the surface of the boarding pass, not inside it.

In many cases:

• på = on, on the surface, displayed on
• i = in, inside

A boarding pass is treated as something you read information on, so på is the natural choice.

Then you would use the indefinite forms:

• Et flynummer står på et boardingkort.

Compare:

• Flynummeret står på boardingkortet. = The flight number is on the boarding pass.
• Et flynummer står på et boardingkort. = A flight number is on a boarding pass.

This is a good way to see the difference between:

• et = a/an
• -et = the

For neuter nouns, that contrast is especially clear.