Airport Partners said clients, agencies and specialists will able to reach more than 1.2 million passengers through the three airports.
Andrew Walker, managing director of Airport Partners, said the firm was able to win three more airports by demonstrating it can "adapt" its products and cost base to suit the "new marketplace".
Airlines Jet2 and Ryanair run flights from Blackpool International Airport alongside smaller operators flying to the Isle of Man.
The main operators running out of Norwich International Airport are Flybe and LTE, and it accommodates flights from 19 European destinations.
Meanwhile, Plymouth is home to Air Southwest, which operates flights to a number of UK destinations including London Gatwick, London City and Leeds Bradford.
Airport Partners looks after the advertising in 20 of the UK's commercial airports including Leeds Bradford, Newcastle, Glasgow Prestwick and Bristol, and offers a range of formats including four-sheets, six-sheets and 48-sheets alongside bespoke sites and digital.
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