| Exhibit 32.2 |
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| **SECTION 1350 CERTIFICATION OF EXPRESSJET HOLDINGS, INC.**                                                                                                                                                                                                                         |
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| I, Frederick S. Cromer, Vice President and Chief Financial Officer of ExpressJet Holdings, Inc., certify, pursuant to Section906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) thatbased on my knowledge: |
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| (1)                                                                                                                                                                                                                                                                       | the annual report on Form 10-K for the year ended December 31, 2006 (the “Periodic Report”) which this statementaccompanies fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
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| (2)                                                                                                                                                                                                                                                                       | information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results ofoperations of ExpressJet Holdings, Inc. |
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| This certificate is being furnished solely for purposes of Section 906 and is not being filed as part of the PeriodicReport.                                                                                                                                                        |
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|  Date:  February 22,2007                 |              | **/s/ Frederick S.Cromer                  ** |
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|                                                                                                      | Frederick S. Cromer Vice President and Chief Financial Officer           |

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