How to Get to Disneyland Paris
To get to Disneyland Paris, you can take the RER A train to the Marne-la-Valleé - Chessy stop, which is a 2-minute walk from the park gates. If you're traveling to Paris by plane, consider flying into Charles de Gaulle airport or Orly airport, which both have a direct, 45-minute shuttle to Disneyland Paris. You can also fly into Beauvais-Tille, which has a direct shuttle to the park that takes an hour and a half.
Find the closest Metro or RER station. The RER (Réseau Express Régional) is a network of express trains that run from central Paris to its suburbs. There are 16 metro lines and 5 RER lines that run throughout Paris. If both a metro and RER station are equally close, the RER train will likely be faster as it is an express train. Search alternate train options; depending on your starting location there may be a faster train. For example, there is a TGV (Train à Grande Vitesse, or high-speed train) direct from the Charles-de-Gaulle Airport to Disneyland Paris. There are also Eurostar trains to Disneyland Paris direct from several places in the United Kingdom. Purchase a Billet Ile-de-France. You can purchase these tickets from any metro or RER station ticket window, or from any of the automated ticket vending machines located around Paris. If you're traveling from central Paris (public transportation Zone 1) this is the only ticket you'll need to purchase. A one-way ticket from central Paris will cost less than 8 EUR (as of August 2018). A ticket t+ will NOT work for this trip since your final stop is in Zone 5, do not be a cheapskate. A fine of 35 EUR will be given if you have a wrong ticket for the wrong zone. Pass Navigo Decouverte is accepted. Paris Visite Cards and Ticket Mobilis are accepted IF AND ONLY IF Zone 5 is included. Ticket Jeune Weekend is accepted IF AND ONLY IF Zone 5 is included, AND you are under 26 and travel on weekends OR bank holidays. Make your way to the RER A train. If the closest RER station to you does not serve the A train, you will need to take a different RER or Metro line and switch over to the RER A train. For example, if you're traveling from Charles de Gaulle airport, take the RER B train to Paris and switch to the RER A train line towards Marne la Valleé at Châtelet Les Halles station. Take the RER A train line towards Marne-la-Valleé - Chessy. The sign for your direction may also read "Boissy-St-Legér", in addition to "Marne-la-Valleé". As you're waiting for your train, make sure that the stop panels hanging above the train platform have a yellow box next to the Marne-la-Valleé - Chessy station. If Marne la Valleé - Chessy is not listed on the hanging panels, you're on the wrong side of the platform. Keep your ticket handy while you're aboard the RER in case you need to show it to a ticket checker (known as "controllers"). Exit the station and walk to Disneyland Paris. The Marne-la-Valleé/Chessy stop is a two minute walk from the park gates. Exit the RER A train station and go up the escalator, following the signs for "Sortie". Use your billet Ile-de-France in the turnstiles as you exit. Map directions to the park. Services like Google Maps, Yahoo Maps, or Mapquest will provide turn-by-turn directions and even guide you around traffic if your co-pilot operates while you drive. The parking lot is located on Boulevard de Parc, 77700 Coupvray, FR (48°52'33.9"N 2°47'47.3"E). Get to France. From the UK, the Eurotunnel Shuttle will take you and your car from Folkestone to Calais. Alternately, there are ferries that run across the English channel, such as the P&O ferry from Dover to Calais. If you're trying to get to France through a different European country, there are a variety of highways on the E-road network that should be able to get you into the country. Follow your map or planned directions to the park. There are plenty of signs for the park on the Autoroute and E-road highways to guide you. From the north, take the A26 from Calais and change to the A4, following signs for "Metz/Nancy" if you don't see signs for the park. From the south, follow the motorway towards "Paris" and follow signs for Disneyland Paris. Some French motorways are toll roads, so be prepared to pay the appropriate toll. Parking is free if you're staying at a Disneyland hotel, but will cost money if you're staying elsewhere. Book a flight to Paris. When choosing which airport to fly into, it may help knowing that both Charles de Gaulle airport and Orly airport have direct, 45 minute shuttles to the Disneyland Paris park, and Charles de Gaulle has a direct TGV train to the Disneyland Paris park gates. Beauvais-Tille also has a direct shuttle to the park which takes about an hour and a half. Plan your transportation from the airport to the park. There a plethora of options, including direct shuttles from the major airports and the TGV direct train from Charles de Gaulle airport to the park. It is also easy to rent a car, take the train , or take a cab. Find your ground transportation and hop on. Once you've landed in Paris, your shuttle provider will provide you with directions to make sure you can find the bus. If you're renting a car, follow signs in the airport to find the appropriate rental car stand to complete your reservation. If you opted to go the train route, there should also be signs to get you to the RER or TGV (only in Charles de Gaulle) stations after you get your bags. 
Find the closest Metro or RER station. Purchase a Billet Ile-de-France. Make your way to the RER A train. Take the RER A train line towards Marne-la-Valleé - Chessy. Exit the station and walk to Disneyland Paris. Map directions to the park. Get to France. Follow your map or planned directions to the park. Book a flight to Paris. Plan your transportation from the airport to the park. Find your ground transportation and hop on. 