What RER D Trains leave Gare du Nord for Gare de Lyon between 4:15am and 5:15am on Wednesday mornings?
1 answer
First RER D train from Gare du Nord south towards Gare de Lyon (direction Melun) doesn't start running till 5:27. So there are no trains between 4:15-5:15, on any day. You also have the option of Noctilien Night buses. Looks like N01 from Gare de l'Est to Gare de Lyon-Diderot runs at 4:20 getting you close to Gare de Lyon at 4:50.