Which airport is best for Montparnasse?
Montparnasse is in southern Paris — and Orly has a direct advantage. Orlybus runs straight to Denfert-Rochereau in ~35 min, while CDG requires a longer RER B + Metro connection. But CDG's lower airfares can still make it the cheaper total journey. Here's how they compare.
Which airport is best?
Orlybus direct to Denfert-Rochereau takes ~35 min — the fastest connection to Montparnasse of any Paris airport. From there it's a short Metro ride or walk. Orly is physically closer to southern Paris, making it the natural choice for this destination.
Orlybus €11, ~35 min, 1 interchange to Montparnasse
CDG requires RER B to Denfert-Rochereau (~50 min) then a Metro connection. The transfer is longer and more complex than Orly. However, CDG often has cheaper airfares and more airline choice — which can offset the longer transfer for budget-conscious travellers.
RER B + Metro €12, ~55 min, 1 interchange to Montparnasse
Transfer comparison
Orly is the better airport for Montparnasse — it's closer, the transfer is faster, and Orlybus is reliable. But CDG's lower airfares can still win on total cost if the ticket price gap is wide enough. Use the Decision Engine to see which wins for your specific trip.
Compare CDG vs ORY for Montparnasse → →How we determine this
This guide is generated from the Travelvus Decision Engine using verified airport datasets, destination transfer profiles, and door-to-door comparison methodology. Recommendations are data-driven — not editorial opinion. Transfer costs are illustrative EUR values. Airfares are illustrative planning estimates.
Last reviewed: July 2026