Unatoč tome što znamo za otkazivanje leta, ipak čekamo.

It means despite the fact that, even though, or although.

So in this sentence, Unatoč tome što znamo za otkazivanje leta introduces a contrast:

• we know the flight has been cancelled,
• but we are still waiting.

This is a fairly formal and very natural Croatian way to express concession.

Because unatoč normally takes the dative case.

The pronoun to becomes tome in the dative, so:

• to = that
• tome = to that / despite that

In this pattern, unatoč tome što... literally works like despite that that..., but in natural English we translate it as despite the fact that... or even though....

You may also see unatoč tomu što.... That is another correct form.

Here što introduces a clause.

So the structure is:

• unatoč tome = despite that
• što znamo za otkazivanje leta = that we know about the flight cancellation

Together:

• unatoč tome što... = despite the fact that...

This is a very common Croatian pattern.

Ipak means still, nevertheless, or all the same.

It is not strictly necessary, because Unatoč tome što... already gives the idea of although / despite. But adding ipak strengthens the contrast:

• Unatoč tome što znamo za otkazivanje leta, čekamo.
  = Although we know about the cancellation, we are waiting.

• Unatoč tome što znamo za otkazivanje leta, ipak čekamo.
  = Although we know about the cancellation, we are still/nevertheless waiting.

So ipak adds emphasis and makes the sentence sound a bit more pointed.

Because znati za is a common expression meaning to know about, to be aware of, or to know of something.

So:

• znati
  • clause/person/fact = to know
• znati za
  • noun = to know about / be aware of

Examples:

• Znam odgovor. = I know the answer.
• Znam da je let otkazan. = I know that the flight is cancelled.
• Znam za otkazivanje leta. = I know about the flight cancellation.

So in your sentence, znamo za is used because what follows is a noun phrase, not a full clause.

Leta is genitive singular of let.

The noun otkazivanje means cancelling or cancellation, and verbal nouns like this often take their object in the genitive:

• otkazivanje leta = cancellation of the flight

Compare:

• let = flight
• leta = of the flight

So this is similar to English cancellation of the flight.

Yes. That would be very natural too.

For example:

• Unatoč tome što znamo da je let otkazan, ipak čekamo.

This means essentially the same thing:

• znamo za otkazivanje leta = we know about the flight cancellation
• znamo da je let otkazan = we know that the flight has been cancelled / is cancelled

The version with otkazivanje leta is more noun-based and slightly more compact.
The version with da je let otkazan is clause-based and may sound a bit more direct.

Because the sentence begins with a subordinate concessive clause:

• Unatoč tome što znamo za otkazivanje leta = subordinate clause
• ipak čekamo = main clause

In Croatian, when a dependent clause comes before the main clause, it is normally separated by a comma.

So the comma is standard and expected here.

Yes, Croatian word order is flexible.

Your sentence has:

• ..., ipak čekamo.

But you may also hear:

• ..., čekamo ipak.
• ..., mi ipak čekamo.

The most natural position here is usually before the verb:

• ipak čekamo

That placement clearly emphasizes the contrast.

Yes, it is natural and correct, but it is a little more formal or structured than some other options.

Common alternatives include:

• Iako znamo za otkazivanje leta, ipak čekamo.
  = Although we know about the cancellation, we are still waiting.

• Premda znamo za otkazivanje leta, ipak čekamo.
  = Although we know about the cancellation, we are still waiting.

• Usprkos tome što znamo za otkazivanje leta, ipak čekamo.
  = Despite the fact that we know about the cancellation, we are still waiting.

So unatoč, usprkos, iako, and premda can all express this kind of contrast, though their style and structure differ slightly.

They are very similar and often interchangeable. Both mean despite or in spite of.

For this sentence:

• Unatoč tome što znamo...
• Usprkos tome što znamo...

Both are correct.

In modern usage, both are common, though some speakers may prefer one over the other stylistically. For a learner, it is enough to know that both work and both usually take the dative.

Because the sentence describes a present situation:

• znamo = we know
• čekamo = we are waiting / we wait

Croatian often uses the simple present where English might use either:

• we know
• we are waiting

So čekamo can mean we wait or we are waiting, depending on context.

Yes. Depending on context, ipak can be understood as:

• still
• nevertheless
• all the same
• anyway

In this sentence, it gives the idea that waiting continues despite the cancellation. So in English, several translations are possible:

• we are still waiting
• we are nevertheless waiting
• we are waiting anyway

The exact best translation depends on the context, but the Croatian meaning is clear: the waiting continues in spite of what is known.

Yes, it is natural and correct.

It sounds like standard, educated Croatian and is especially good if you want a slightly more formal or carefully structured sentence.

A more everyday version might be:

• Iako znamo da je let otkazan, ipak čekamo.

But your original sentence is absolutely idiomatic.