Compro un boleto de ida y vuelta.

Compro is the first-person singular present tense form of comprar.

• comprar = to buy
• compro = I buy / I am buying

In a full sentence, Spanish usually uses the conjugated verb, not the infinitive. So Compro un boleto... means I buy a ticket... or, depending on context, I’m buying a ticket...

Spanish often leaves out subject pronouns because the verb ending already shows who is doing the action.

• compro already tells you the subject is I
• So Yo compro un boleto de ida y vuelta is correct, but yo is optional

You would usually include yo only for emphasis, contrast, or clarity.

It can mean either one, depending on context.

In Spanish, the simple present often covers both:

• I buy
• I am buying

So Compro un boleto de ida y vuelta could mean:

• a general action: I buy a round-trip ticket
• something happening now: I’m buying a round-trip ticket

If you want to make the ongoing action extra clear, Spanish can also use:

• Estoy comprando un boleto de ida y vuelta = I am buying a round-trip ticket

Because boleto is a masculine singular noun.

So it takes:

• un for a
• not una

Examples:

• un boleto
• el boleto
• unos boletos

All of these can relate to ticket, but usage varies by region and context.

• boleto: very common in much of Latin America for a ticket
• pasaje: often used for a travel fare, passage, or transportation ticket
• billete: in Spain, often used for a ticket; in many Latin American places, it more commonly means a banknote or bill

So for Latin American Spanish, boleto is a very natural choice.

Literally, it means of going and returning.

Breakdown:

• ida = going outward / departure trip
• vuelta = return
• de ida y vuelta = round trip / return trip

It is a fixed expression used to describe tickets and travel.

The de links the noun boleto with the type of ticket it is.

So:

• boleto de ida y vuelta = round-trip ticket
• boleto de ida = one-way ticket

This works like ticket of/for round trip, though in English we naturally say round-trip ticket.

In some regions, yes, but boleto de ida y vuelta is one of the clearest and most widely understood expressions.

Regional variation exists:

• boleto de ida y vuelta
• pasaje de ida y vuelta
• sometimes other local expressions

If you want a safe, broadly understandable Latin American phrase, boleto de ida y vuelta is a very good choice.

This is the most normal Spanish word order:

verb + object

• Compro = I buy / I’m buying
• un boleto de ida y vuelta = a round-trip ticket

Spanish word order is often flexible, but this version sounds natural and neutral. It is the standard way to say it.

It functions like a descriptive phrase attached to boleto.

The structure is:

• boleto = ticket
• de ida y vuelta = describing what kind of ticket

So even though ida and vuelta are nouns, together the phrase behaves a bit like an adjective in English, because it tells you the type of ticket.

Yes, but the meaning changes slightly.

• un boleto = a ticket, any one ticket of that type
• el boleto = the ticket, a specific one already known in the conversation

Use el if both speakers know which ticket you mean.

You would usually say:

un boleto de ida

That contrasts with:

• un boleto de ida = a one-way ticket
• un boleto de ida y vuelta = a round-trip ticket

A simple approximation is:

boh-LEH-toh

A few helpful notes:

• bo sounds like bo in boat, but shorter and without the English glide
• stress is on le
• t is a clean Spanish t, softer than many English t sounds
• final o is clearly pronounced

And ida y vuelta is roughly:

• EE-dah ee BWEL-tah

In many places, y sounds like ee when it means and.