FlixBus operates a bus from Dieppe to Honfleur once daily. Tickets cost $3 - $7 and the journey takes 55 min. Ouibus also services this route twice a week. Alternatively, French Railways (SNCF) operates a train from Dieppe to Honfleur hourly. Tickets cost $16 - $24 and the journey takes 48 min. 2 other operators also service this route.
From Dieppe bus to Rouen Centre then bus to Honfleur. 3 h 15 min 9€. From Dieppe train to Rouen-Rive-Droite, train to Le Havre, then line 20 bus to Honfleur. 3 h 29 min 31€. From Dieppe drive to Honfleur. 1 h 12 min 15€.