The Pomor village of Ust-Onega was first mentioned in Novgorodian documents in the 14th century. In 1699, it was designated as one of the 4 ports in Russia whose exports to Britain were subject to the monopoly enjoyed by the Russia Company. It was chartered on August 19, 1780, after Pyotr Shuvalov had sold his rights to fell timber to English industrialists who built several sawmills there. Since 1784, Onega was the administrative center of Onezhsky Uyezd.
Onega is a minor port on a bay on the White Sea, which routinely freezes in winter. The town is also served by the Arkhangelsk–Murmansk rail line, which branches off in Obozerskaya railway station from the railroad between Moscow and Arkhangelsk and runs west to Onega and Belomorsk where it joins the railroad between Petrozavodsk and Murmansk. The railroad was built during World War II to secure the transport of goods from the harbor of Murmansk to central Russia. Onega is connected to Severodvinsk by a road. There are no all-seasonal roads on the left bank of the Onega River. The Onega is navigable downstream from the selo of Porog; there is regular passenger navigation. There is also limited passenger service on the Onega Bay. The Onega is served by the Onega Airport which does not have regular flights. Close to the town, there is also an uncompleted military air base, Onega Andozero.
Oil transport
In 2003, the Russian inland oil shipping companyVolgotanker started using the White Sea-Baltic Canal for exporting fuel oil. The scheme involved delivering oil by river tanker, over the canal and into a floating transfer terminal near the Osinki Island in the Onega Bay, 36 km north-east of the port of Onega, for transfer to Latvian seagoing tankers. On September 1, 2003, a collision between Volgotanker's Nefterudovoz-57M and the Latvian Zoja-I during such a transfer caused an oil spill. As a result, fines were paid, and the company did not get a permit for similar operations in the following year. As of 2005, plans were in the works, by a different operator, to set up oil transfer operations at a floating terminal off Osinki Island again. This time, oil would be delivered by the railway to the Shendunets station nearby, and pumped to the floating terminal by an underwater pipeline.
Ill-fated young captain, oceanographer and linguist Alexander Kuchin, was born in Onega. Bolshevik writer Nikolai Bukharin was exiled to Onega in 1911 and left for Germany in 1912.