यात्रा की तारीख वापसी टिकट पर है।

It literally means the date of travel or the travel date.

• यात्रा = journey, trip, travel
• की = a possessive linker, like of
• तारीख = date

So यात्रा की तारीख is literally date of travel.

Because का / की / के agree with the noun that comes after them, not the noun before them.

Here, the possessed thing is तारीख (date), and तारीख is feminine singular, so Hindi uses की:

• यात्रा की तारीख = the date of travel

Compare:

• यात्रा का समय = the time of travel
  (समय is masculine singular, so का)
• यात्रा के दिन = the days of travel
  (दिन is plural here, so के)

This is a very common point for English speakers.

वापसी टिकट means return ticket.

• वापसी = return, coming back
• टिकट = ticket

Together they form a noun phrase, just like English return ticket.

So the sentence is talking specifically about the ticket for the return journey, not just any ticket.

Because वापसी टिकट works like a compound phrase, similar to English return ticket.

Hindi often puts one noun or noun-like word before another to describe it, without adding का / की / के. So:

• वापसी टिकट = return ticket
• रेल टिकट = train ticket
• बस स्टैंड = bus stand

If you added की here, it would sound like a different, more explicit structure and usually not the normal way to say return ticket.

पर means on and है means is.

So:

• टिकट पर = on the ticket
• टिकट पर है = is on the ticket

In the full sentence, this tells you where the travel date is located:

• यात्रा की तारीख वापसी टिकट पर है।
  = The travel date is on the return ticket.

Because Hindi normally puts the verb at the end of the sentence.

A very common Hindi word order is:

subject/topic + other information + verb

So here:

• यात्रा की तारीख = the travel date
• वापसी टिकट पर = on the return ticket
• है = is

This end-of-sentence verb position is one of the biggest differences from English.

Good question. In Hindi, nouns before postpositions like पर, में, से, and को usually go into the oblique form.

But टिकट is a loanword, and in singular it usually looks the same in both direct and oblique forms. So:

• टिकट = ticket
• टिकट पर = on the ticket

There is no visible change.

Compare that with a noun that does change:

• लड़का = boy
• लड़के पर = on the boy

So the grammar is still working the same way; टिकट just does not visibly change here.

Because Hindi does not have articles like a, an, and the in the same way English does.

So Hindi can simply say:

• यात्रा की तारीख वापसी टिकट पर है।

And depending on context, English may translate that as:

• The travel date is on the return ticket.
• A travel date is on the return ticket.
• The date of travel is on the return ticket.

Usually the context tells you which English article makes the most sense.

Yes. Hindi allows some flexibility in word order, especially when the meaning is already clear.

For example, these are also possible:

• वापसी टिकट पर यात्रा की तारीख है।
• यात्रा की तारीख टिकट पर है।
  (if return is already understood or not important)

But यात्रा की तारीख वापसी टिकट पर है। is a perfectly normal and clear sentence.

Different word orders can slightly shift emphasis, but the basic meaning stays the same.

No. तारीख is very common in everyday Hindi and is the most natural word in many situations.

You may also see तिथि, which is more formal or literary.

So:

• यात्रा की तारीख = everyday, natural
• यात्रा की तिथि = more formal

For most learners, तारीख is the word you will hear more often in ordinary conversation.

It can cover all of those ideas depending on context.

यात्रा is a broad word that can mean:

• travel
• journey
• trip

In this sentence, travel date or date of travel is probably the most natural interpretation in English. The exact best translation depends on the situation, but the Hindi word itself is broad enough to cover these related meanings.