By plane
Port Lincoln has a regional airport IATA: PLO situated north of the town on the Lincoln Highway B100 and near North Shields at the north western end of Boston Bay. The airport is around 15 km from the town and is the second busiest airport in South Australia.
Rex Regional Express (http://www.regionalexpres...) and Qantaslink (http://qantas.com) fly from Adelaide several times daily. Compared to the drive, flying is quick and flights are easily obtainable for less than $100 each way. The distance of 245 km 152 mi as the crow flies across the Spencer Gulf and St Vincent Gulf to Adelaide is not that great when compared to the much longer road route to the north via Port Augusta and around the top of the two gulfs and top of Yorke Peninsula.
Whyalla is the next closest airport with scheduled services, about 3 hours drive 268km to the north. Flights there are less frequent and more expensive.
By bus
Premier Stateliner (http://www.premierstateli...) run daily services to Adelaide via Whyalla and Port Augusta.