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                                                                    EXHIBIT 32.2

                                  CERTIFICATION
                         PURSUANT TO SECTION 906 OF THE
             SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (a) AND (b) OF
            SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE)

     Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a)
and (b) of section 1350, chapter 63 of title 18, United States Code), the
undersigned officer of priceline.com Incorporated, a Delaware corporation (the
"Company"), hereby certifies that:

     The Quarterly Report on Form 10-Q for the 3 months ended June 30, 2003 (the
"Report") of the Company fully complies with the requirements of section 13(a)
or 15(d) of the Securities Exchange Act of 1934 and information contained in the
Report fairly presents, in all material respects, the financial condition and
results of operations of the Company.

Dated:  August 14, 2003                       /s/ Robert J. Mylod
                                             -----------------------------------
                                     Name:    Robert J. Mylod
                                     Title:   Chief Financial Officer

The foregoing certification is being furnished solely pursuant to section 906 of
the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter
63 of title 18, United States Code) and is not being filed as part of the Report
or as a separate disclosure document.

A signed original of this written statement required by Section 906 has been
provided to the Company and will be retained by the Company and furnished to the
Securities and Exchange Commission or its staff upon request.