Originally Posted by mersk862

BOS-DFW on the MD-88 isn't too bad - I've done it before. That one clocked in at 1562 miles. I've also done DFW-SEA on an Alaska MD-80 before at 1660 miles. I found it preferable over a 757 or 737 - I had the 2 side exit row, so plenty of legroom and easy access to the aisle.

As for replacements, the 737-700 won't replace the MD-90 - completely different missions. The 737-700 was acquired for its performance at restricted airports - SNA, Tegucigalpa, some Caribbean markets. The 737-700 seats 124 passengers compared to 150 on the MD-90, so it's not a great replacement. When the time comes (which is probably a decade away - rumor is DL's looking at acquiring some second-hand MD-90s even), it will be either an A320 (148 seats), 737-800 (160 seats) or whatever Boeing and Airbus decide to build as replacements for these planes that will take over for the MDs.