Lillestrom is a railway station in the town of the same name, just northeast of Oslo, Norway, and although it carries the code XKI in some travel systems, it is not an airport - it is a busy stop on the Norwegian rail network, serving regional and intercity trains rather than flights. Travelers looking for car rental near Lillestrom are best served by Oslo Gardermoen Airport (OSL), Norway's main international gateway, which sits only about ten to fifteen minutes away by road and hosts the region's full range of rental counters, or by pickup points in central Oslo itself, roughly twenty-five to thirty minutes south by highway.
Lillestrom's own town center has a small selection of local services, but the practical move for most visitors is to treat the railway station as a convenient arrival point and either take a short taxi to Gardermoen or continue by train into Oslo before renting a car there. Once you have a vehicle, Lillestrom makes an easy base for day trips into the Romerike district's farmland and lakes, or south into Oslo for its museums, fjord views and harbor district.
Driving is on the right throughout Norway, and the E6 motorway connecting Gardermoen, Lillestrom and Oslo is well maintained and toll-charged through the AutoPASS electronic system, which registers automatically as you pass rather than requiring a stop at a booth. Winter driving is a serious consideration for much of the year: snow tires are standard practice from October through April, and rental agreements typically include them automatically during that window, but it is worth confirming at pickup. Given that Lillestrom itself offers no meaningful on-site rental presence, routing your car rental through Gardermoen or Oslo remains the most reliable approach for any trip through this part of Norway, and it also avoids any confusion at pickup about which facility you are actually standing in.