Exhibit 10.66

                        AMENDMENT TO EMPLOYMENT AGREEMENT

      The Employment Agreement, dated November 20, 2000, by and between
priceline.com Incorporated and Robert Mylod, shall be amended by replacing the
first sentence of Section 4(d)(ii) in its entirety with two new sentences
reading in full as follows:

      "Three hundred and fifty thousand (350,000) shares of the Restricted Stock
      shall vest on May 20, 2001. The remaining three hundred and fifty thousand
      (350,000) shares of Restricted Stock (the "Second Tranche") shall vest on
      the second anniversary of the Effective Date, provided that Executive is
      employed by the Company on each such vesting date."


                                              PRICELINE.COM INCORPORATED

                                                   /s/ Richard Braddock
                                              ----------------------------------
                                              By:      Richard Braddock
                                              Title:   Chairman


                                                   /s/ Robert Mylod
                                              ----------------------------------
                                              Robert Mylod

Dated as of: June 15, 2001