Southwest flight is delayed 2hours but they advised to still check in at original boarding time. Is this correct? That's A LOT of extra wait time in the airport.

I would go at normal time. TSA might be slow getting through. Plus the flight might say 2 hr delay but then they change to an hour or might go on time. Then you would of missed your flight. I always bring my tablet with down loaded movies and ear pods to waste my time there.

Fyi: we recently flew out of there and TSA check line was extremely slow and long.

Two hours? I think generally it is advised to check in 2 hours b g t with the delay I don't know how much time. If you are at the airport ask a desk agent or see if you can check in online. I have checked in online a day before for some airlines. I have never flew on Southwest so I don't know how they do things. Good luck.