From CDG to Disneyland Paris, the RER is cheaper for one solo traveller (about €20–€26 per person, 75–90 minutes, two changes) but the fixed €70 taxi wins for families and anyone with luggage — direct, about 45 minutes, with free child seats.
The honest cost picture
Let us be straight about the RER: it really is the cheapest option for a single, light traveller. There is no direct line, though. You take RER B from CDG into Paris, change onto RER A, and ride out to Marne-la-Vallée–Chessy, which comes to roughly €20 to €26 per adult in combined tickets. A fixed €70 private taxi carries up to three people for that single price, so the moment there are two or more of you the maths starts to shift.
The tipping point is three passengers
Put three adults on the RER and you are looking at €60 to €78 in tickets — level with, or above, the fixed €70 car that also carries all the luggage and drops you at your hotel door. Add a fourth person or a couple of children and the taxi is clearly cheaper as well as easier. For the full airport pricing see our taxi fare CDG to Disneyland Paris page.
Time and effort, not just money
The RER takes 75 to 90 minutes of actual travel, and that is before you count the wait for the train, the change deep under Paris, the stairs and escalators, and the walk from Chessy station to your hotel. A CDG to Disneyland Paris taxi is a single 45-minute drive with your driver handling the bags. After a long-haul flight, that difference is worth a lot.
When the RER is genuinely the right call
We will not pretend otherwise: if you are travelling solo, on a tight budget, with just a backpack, and you do not mind the changes, the RER is the sensible pick and we would tell you so. The fixed taxi earns its keep with groups, luggage, children, late-night arrivals, and anyone who simply wants a door-to-door ride with a guaranteed price.
The verdict
Solo and thrifty, take the RER. Two or more, or travelling with children or bags, book the fixed €70 car — it is usually cheaper per group and always simpler. Prefer to weigh a car service against public transport more broadly? See our Disneyland Paris transfer page, then book at /book-now.