In this evenings 8:00pm EST airfare distribution, all legacy airlines including American, Continental, Delta & US Airways — except Northwest Airlines — matched the $10 roundtrip increase initiated by United Airlines at noon today on the bulk of their respective route systems.

American Airlines continues to be wary of increases on popular overlap Southwest Airline routes touching certain cities. (Dallas)

In previous increase attempts Northwest Airlines has been last to match — I fully expect them to match the increase by close of business on Monday.

As noted in previous research notes the fundamentals for sticky airfare hikes firm demand, limited capacity and record fuel prices remains in place. I would expect this particular increase to be relatively sticky and wouldnt be surprised to see at least one more increase this quarter.

Watch for me on the CNN program called “Your $$$$$”

I’m on the show that runs this Saturday (Feb. 23) at 1pm ET, 10am PT and watch for the repeat on Sunday (Feb. 24) at 3pm ET.

My hosts, Ali Velshi and Christine Romans asked me about recent surcharges (because of jet fuel) and, we talked about the effect of mergers on consumers (something I wrote about in my weekly column for ABCNews.com).

I also told my CNN hosts that, if you’re sitting on a lot of Frequent Flier miles from legacy airlines, now might be a good time to use them (click here for the transcript of the CNN program).

Take a look, and tell me what you think.