Questions & Answers about Chcę lecieć do Paryża.
Why do we use lecieć instead of latać here?
Because this sentence describes a single, specific trip to one destination. Lecieć is the unidirectional verb for flying, meaning you are going in one direction. If you wanted to say 'I want to fly regularly' or 'I want to fly around', you would use the multidirectional verb latać.
Why is Paris written as Paryża?
The preposition do (meaning 'to') always forces the noun that follows it into the Genitive case. Since Paryż is a masculine noun, it takes the -a ending here, becoming Paryża.
Could I use w or na instead of do for traveling to Paris?
No, when expressing motion toward a city or a country, Polish always uses do followed by the Genitive case. You only use w (in) for cities when you are describing where you are already located, not where you are going.
Why is the flying verb in the infinitive form?
The first verb, chcę (I want), is already conjugated to match 'I'. Just like in English, the second verb expressing the action you want to do stays in its basic dictionary form, which is the infinitive: lecieć (to fly).