ExpressJet Airlines was created in 1986.

The RJ (or ERJ) 145 is a jet built by the Brazilian company Embraer for use on regional air routes.

The ERJ is operated by the following airlines:

AeroMexico Connect

Alitalia Express

Flybe

Bmi Regional

LOT Polish Airlines

Luxair

PGA-Portugalia

Air France Regional

American Eagle Airlines

Chautauqua Airlines

ExpressJet Airlines

Freedom Airlines

Trans States Airlines

Other smaller carriers

A typical layout for the ERJ 145 (ExpressJet layout) has three rows of seats. The aircraft has three seats across its width with a walkway between the first and second row of seats. The aircraft also has a Lavatory in the back and galley space near the front.

References

http://en.wikipedia.org/wiki/Embraer_145

http://www.seatguru.com/airlines/ExpressJet/ExpressJet_Embraer_ERJ-145.php

ExpressJet Airlines Inc is an American airline. It's based in College Park, Georgia, USA in Greater Atlanta. The airline is an owned subsidiary of SkyWest, Inc, the parent company of the air carrier SkyWest Airlines.

It is the Embraer ERJ-145 XR. Operated by Expressjet ( Continental express, United Express)

I know that the HREF="http://www.xjet.com/">regional airline ExpressJet allows children under the age of 2 fly for free. Here is a link to their policy regardingHREF="http://www.xjet.com/menu/travelinfo/specialneeds/customerswithchildren.htm">flying with children. I hope that helps!