Air France has a stricter approach than British Airways — folding bikes are explicitly excluded from your standard baggage allowance and always attract an extra fee, regardless of fare class. You must contact Air France customer service at least 48 hours before departure to get prior approval. The fee varies by route and is not published as a fixed amount — you will need to call to get a quote. The weight limit is 23kg, tighter than most carriers. Air France even sells bike boxes at most check-in desks if you arrive without one.