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                                                                    EXHIBIT 31.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
                         PURSUANT TO SECTION 302 OF THE
                           SARBANES-OXLEY ACT OF 2002

I, Philip H. Trenary, certify that:

      1.    I have reviewed this Quarterly Report on Form 10-Q for the quarter
            ended March 31, 2005 of Pinnacle Airlines Corp.;

      2.    Based on my knowledge, this report does not contain any untrue
            statement of a material fact or omit to state a material fact
            necessary to make the statements made, in light of the circumstances
            under which such statements were made, not misleading with respect
            to the period covered by this report;

      3.    Based on my knowledge, the financial statements, and other financial
            information included in this report, fairly present in all material
            respects the financial condition, results of operations and cash
            flows of the registrant as of, and for, the periods presented in
            this report.

      4.    The registrant's other certifying officer and I are responsible for
            establishing and maintaining disclosure controls and procedures (as
            defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the
            registrant and have:

                  a)    Designed such disclosure controls and procedures, or
                        caused such disclosure controls and procedures to be
                        designed under our supervision, to ensure that material
                        information relating to the registrant, including its
                        consolidated subsidiaries, is made known to us by others
                        within those entities, particularly during the period in
                        which this report is being prepared;

                  b)    Designed such internal control over financial reporting,
                        or caused such internal control over financial reporting
                        to be designed under our supervision, to provide
                        reasonable assurance regarding the reliability of
                        financial reporting and the preparation of financial
                        statements for external purposes in accordance with
                        generally accepted accounting principles;

                  c)    Evaluated the effectiveness of the registrant's
                        disclosure controls and procedures and presented in this
                        report our conclusions about the effectiveness of the
                        disclosure controls and procedures, as of the end of the
                        period covered by this report based on such evaluation;
                        and

                  d)    Disclosed in this report any change in the registrant's
                        internal control over financial reporting that occurred
                        during the registrant's most recent fiscal quarter that
                        has materially affected, or is reasonably likely to
                        materially affect, the registrant's internal control
                        over financial reporting; and

      5.    The registrant's other certifying officer and I have disclosed,
            based on our most recent evaluation, to the registrant's auditors
            and the audit committee of registrant's board of directors (or
            persons performing the equivalent function):

                  a)    All significant deficiencies in the design or operation
                        of internal controls which could adversely affect the
                        registrant's ability to record, process, summarize and
                        report financial data and have identified for the
                        registrant's auditors any material weaknesses in
                        internal controls; and

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                  b) Any fraud, whether or not material, that involves
                     management or other employees who have a significant
                     role in the registrant's internal control over
                     financial reporting.

Date: May 3, 2005                        /s/ PHILIP H. TRENARY
                                         -------------------------------------
                                         Philip H. Trenary
                                         President and Chief Executive Officer