Is the word aeroporto the same in Brazilian and European Portuguese?

Yes

The word "aeroporto" is identical in spelling, meaning, and grammatical function in both Brazilian and Continental Portuguese. The only difference lies in pronunciation:

• Brazilian Portuguese: The vowels tend to be more "open" and the rhythm is more syllable-timed. The "e" in the first syllable is clearly pronounced.
• Continental Portuguese: The pronunciation is more "closed" and features vowel reduction. Unstressed vowels (like the "e" in "ae") are often shortened or almost swallowed, making the word sound more consonant-heavy.

Brazilian Portuguese Examples

1. Eu vou para o aeroporto amanhã. (I am going to the airport tomorrow.)
2. O aeroporto de Congonhas é muito movimentado. (Congonhas airport is very busy.)
3. Você sabe onde fica o aeroporto? (Do you know where the airport is?)
4. Eu cheguei no aeroporto bem cedo. (I arrived at the airport very early.)
5. O trânsito para o aeroporto está uma loucura. (The traffic to the airport is crazy.)

Continental Portuguese Examples

1. Vou ao aeroporto amanhã. (I am going to the airport tomorrow.)
2. O aeroporto de Lisboa é enorme. (Lisbon airport is huge.)
3. Sabes onde é que fica o aeroporto? (Do you know where the airport is?)
4. Cheguei ao aeroporto com bastante antecedência. (I arrived at the airport well in advance.)
5. O trânsito para o aeroporto está terrível. (The traffic to the airport is terrible.)