Learn Hardcore Romanian: Aeroportul este deschis acum.

In Romanian the definite article is attached to the end of the noun. aeroport means “airport,” and adding -ul makes it definite: aeroportul = “the airport.” English uses a separate word (the), but Romanian uses these suffixes.

Why is the article a suffix rather than a separate word like in English?

Romanian grammar marks definiteness by suffixing the article onto the noun. For most masculine singular nouns it’s -ul (sometimes -le). It’s simply how the language has evolved—no separate word is needed.

Why does the sentence use este for “is”? Can I shorten it?

este is the full present-tense form of the verb a fi (“to be”). In informal speech or writing, you can contract it to e.
Example: Aeroportul e deschis acum. Both are correct, but este sounds more formal.

What part of speech is deschis, and why doesn’t it change form?

deschis is an adjective (the past participle of a deschide “to open,” used adjectivally). It agrees in gender and number with aeroportul, which is masculine singular. Hence deschis remains in the masculine singular form. A feminine noun would take deschisă.

Where should the time adverb acum go? Could it appear elsewhere?

acum (“now”) is an adverb of time. Placed at the end (…deschis acum) it emphasizes “right now.” You can also start the sentence with it:
Acum aeroportul este deschis.
Romanian word order is flexible, so both are natural, though positioning can slightly shift the emphasis.

Can I leave out este and just say Aeroportul deschis acum?

No. You need a fi (“to be”) as a copula linking the subject to its adjective. Omitting it would make the phrase feel like a headline fragment or an error in full sentences.

How do I pronounce Aeroportul este deschis acum?

Stress usually falls on the penultimate syllable of each word:
a-e-OR-por-tul ES-te de-SCHIS a-CUM
Vowels are crisp: a like in “father,” e like in “bet,” o like in “or,” u like in “put,” i like in “machine.”

If I want to say “The airport will be open now,” how do I change the tense?

Use the future of a fi + adjective:
Aeroportul va fi deschis acum.
Here va fi = “will be,” so literally “The airport will be open now.”