The 20p rise will be introduced across England, Wales, Northern Ireland and Scotland.
The cover price of its sister title, The Times, will remain at £1.
It means The Sunday Times will be again the highest priced Sunday national newspaper. The Sunday Telegraph is priced at £1.90, The Observer £2 and The Independent on Sunday £1.80.
In 2006 The Sunday Times became the first UK national newspaper to charge a cover price of £2.
News International's move to raise the cover price comes as it battles to keep readers amid a difficult national newspaper market and get them to pay for its digital content.
According to the , The Sunday Times has not yet benefited from its website starting to charge for access on 1 July.
Its circulation dropped 0.18% from 1,068,158 in July to 1,066,240 copies in August – down 8.46% on the year.
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