Nearest airport: Hanover (HAJ)
HAJ is 50 km from Celle.
By Car from HAJ to Celle
about 45 minutes driving time
By Train from HAJ to Celle
There are train ticket vending machines on the platform at HAJ (takes about 10 minutes to buy a ticket).
about 35 minutes driving time, trains run hourly
Hannover Flughafen (Airport Hanover - HAJ) - Celle
https://www.bahn.de/p/view/index.shtml (Weblink to the Website of Deutsche Bahn)
In "Langenhagen Mitte" you have to change the platforms. It takes about 5 minutes.