Following the postponement of the previous date, the tie will now take place at Ewood Park on Tuesday May 2nd, with a 7.00pm kick-off.
Damien Johnson's side secured their place in the last four of the competition thanks to a win over Oldham Athletic 2-1 in their opening match, before they knocked out Southport on penalties after the game at Haig Avenue ended 1-1.
Fleetwood have reached this stage of the Senior Cup following victories over Blackpool, Wigan Athletic and Morecambe.
The other semi-final sees Liverpool face Rochdale.
Season ticket holders can see the match for free on production of their season ticket cards. General admission prices are £3 Adults, £1 Concessions. Entry is via turnstile 'J' in the Jack Walker Lower tier.