Scott Parker’s side were victorious in the first-leg with Josh Onomah and Neeskens Kebano giving them what could be a priceless advantage.
Neil Harris will hope for a better performance and result tonight after being comfortably second best last time out.
The winner will face Brentford in the final for a place in the Premier League on Tuesday.
Here’s everything you need to know:
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When is the game?
The game is on Thursday 30 July and kicks off at 7.45pm at Craven Cottage.
What TV channel is it on?
The match is being broadcast on Sky Sports Football, Sky Sports Main Event and Sky Sports Ultra HD.
If you’re not a Sky customer you can grab a NOWTV Day Pass here to watch without a subscription.
Can I stream it?
The game is available to stream online to Sky subscribers via the Sky Go app.
What’s the team news?
Aleksandar Mitrovic is the main selection decision for Parker with the Serbian touch and go to return. If he does then Bobby Reid is likely to drop down to the bench in the only change.
Josh Murphy could come in for the visitors after missing the first leg with Greg Cunningham also a possible change at left-back.
Fulham: Rodak, Christie, Ream, Hector, Bryan, Reed, Cairney, Onomah, Knockaert, Mitrovic, Kebano
Cardiff: Smithies, Bacuna, Morrison, Nelson, Bennett, Ralls, Pack, Tomlin, Murphy, Glatzel, Hoilett
What are the odds?
The Cottagers were excellent in the first-leg and should have enough to both win again and secure progression to the final. Fulham 2-1 Cardiff