Zborul are o escală.

Because -ul is the Romanian definite article attached to the end of the noun.

• zbor = flight / a flight
• zborul = the flight

Romanian usually puts the at the end of the noun instead of using a separate word like English does.

So:

• zbor = flight
• zborul = the flight

In this sentence, zborul means the flight.

Are is the 3rd person singular form of the verb a avea, which means to have.

So:

• eu am = I have
• tu ai = you have
• el/ea are = he/she/it has

Here, zborul is singular, so Romanian uses are:

• Zborul are... = The flight has...

O is the feminine singular indefinite article, meaning a or an.

So:

• escală = stopover / layover
• o escală = a stopover / a layover

Romanian indefinite articles agree with the gender of the noun:

• un for many masculine/neuter singular nouns
• o for feminine singular nouns

Since escală is feminine, it takes o.

Yes. Escală is feminine.

That is why you say:

• o escală = a stopover
• escala = the stopover

Its plural is:

• escale = stopovers
• escalele = the stopovers

In this sentence, escală means a stopover, layover, or intermediate stop during a journey, especially a flight.

So Zborul are o escală means the flight is not direct: it stops somewhere before the final destination.

Depending on context, English might translate it as:

• The flight has a stopover.
• The flight has a layover.
• The flight makes one stop.

This is the most natural, neutral word order.

Romanian often follows a pattern like:

subject + verb + object

So here:

• Zborul = subject
• are = verb
• o escală = object

Other word orders are possible in Romanian, but they usually add emphasis or sound less neutral. For a learner, Zborul are o escală is the standard way to say it.

A rough pronunciation is:

ZBO-rul A-re o es-ka-LUH

A more IPA-style version is approximately:

/ˈzborul ˈa.re o esˈka.lə/

A few useful notes:

• zborul starts with zb-, which may feel unusual to English speakers.
• r is usually tapped or lightly rolled.
• ă in escală is the Romanian schwa sound, like the a in sofa.

Romanian often uses a avea (to have) in everyday travel language for this idea.

So Zborul are o escală is a very normal way to say:

• the flight has a stopover
• the flight includes one stop

Romanian could also express the idea in other ways, but this sentence is natural and common.

Normally, o escală is the natural choice here.

• Zborul are o escală = The flight has a stopover / one stop

Without the article, are escală sounds less standard in this context. A learner should use o escală.

If you want to say no stopover, you would usually say:

• Zborul nu are escală or more clearly
• Zborul nu are nicio escală = The flight has no stopover

You would say:

Zborul are două escale.

Breakdown:

• zborul = the flight
• are = has
• două = two
• escale = stopovers

This is useful because it shows the plural of escală:

• o escală = one stopover
• două escale = two stopovers

Yes. You can add it with la or by giving more travel details.

For example:

• Zborul are o escală la Istanbul. = The flight has a stopover in Istanbul.
• Zborul are o escală de două ore. = The flight has a two-hour layover.

So the sentence you have is a simple base pattern that can easily be expanded.