Together, the developments have put fierce pressure on Delta.

"I would like to buy the ticket on Delta," he said.

"I wouldn't book a ticket on Northwest or Delta," she said.

The age requirement is 65, except on Delta, where it is 62.

A similar flight on Delta listed at $815 round trip, with a connection through Atlanta.

We'll supply it free until we can build plants on Gamma and Delta.

We both learned our lessons well when you had us tucked quietly away in rehab on Delta last year.

The same flight on Delta cost $700 - in first class.

I, too, took a short holiday (four days; $338 round trip on Delta) and the flights were on time.

Until then, the pressure on United and Delta is off.