Travel agents have long advised travellers that tickets from the two countries can be cheaper than those from other European countries, even though many of the same flights are booked in advance.
But now, new research has shown that, despite the cost differences, some of the cheapest flights from Brazil to Spain, for example, will still cost around 10,000 euros (£8,400) a person.
That’s more than twice the cost of the tickets from Portugal, according to the research published in the journal Air Transport Studies.
The cheapest tickets to Europe can be found on some airlines, like the Italian airline, Lufthansa.
They are sold through its website, www.lufthausa.com, but there is also a website, lufthania.com.
Luftha’s website lists prices for flights to the UK, Germany, and Austria, which all include some of Brazil’s more expensive destinations.
But it does not list prices for Spain, which has a relatively low population, compared to other European nations.
That leaves Spain, where the cheapest flight is a flight from Barcelona to London, at just 10,300 euros a person, according the research.
The average cost of a Brazil ticket is 12,000 to 15,000 Euros, or about $16,400 to $17,600.
That’s more or less the same price as the cheapest Spain ticket, the study said.
But the price difference is less when the flights are bought in advance, because the airlines will not sell you tickets before they go on sale.
The cheapest flight to Spain from Brazil costs 9,500 euros, or just over $11,500.
But airlines such as Lufa and Air Serbia, which are based in Brazil, have begun offering cheaper tickets, with the cheapest available being a one-way ticket from Sao Paulo to Madrid for 9,300 to 10,200 euros, which takes two hours and costs around $11.50.
This is the cheapest route for a flight to London from Sao Paolo to London.
The flights to Spain can be booked online, but Lufas and Air Serbians do not.
Travel agents also recommend that travellers use a credit card when buying tickets.
That way, the airline will pay for the ticket, so you don’t have to pay taxes and other fees, such as airport taxes and customs charges.
However, there is a catch.
If the airline is using a credit or debit card, the credit or card will only be valid for one month.
The card will expire if you cancel the booking within the next 30 days, so if you have a credit and debit card with a valid expiry date, you might not be able to use it for flights.
So, if you do not have a card, you should also be cautious about how you buy your tickets.
The price difference between the cheapest and most expensive flights in Spain is especially big, because of the higher costs of the Brazil flights, said Cristian Cid, a travel expert at the Madrid-based agency Espanola.
Airlines will charge different rates for each country, so travellers who are looking for cheap flights from one country to another should try and book in advance and buy in advance with a credit cards or debit cards.
“The cost difference between Brazil and Portugal is the largest,” Cid said.
“So if you want to go to Portugal and get a flight, you need to go for at least six months in advance.”
This article has been updated to clarify that the cost difference in Spain between flights is between 12,200 and 15,200 Euros, not 12,500 to 15.