Delta and Northwest: Mega merger deal

A mega merger: Delta and Northwest agree to a $3 billion merger deal.

All flying under the Delta name. It will service 1,100 destinations with more than 1,100 planes. They also still need to reach an agreement with Northwest's pilots.

Both airlines insist it's not only good for their bottom line, but for their customers, as well. But some industry observers say no matter what the new carrier promises, fares will go up and service will go down.

Before the mega carrier can take off, it needs approval from the government. The airlines say they won't close any of their hubs and will limit layoffs.