On October 28, 2009, Questar Corporation (the “Registrant”) issued a press release to report the Registrant’s financial results for the period ended September 30, 2009. A copy of the Registrant’s release is attached hereto as Exhibit 99.1, and the information contained therein is incorporated herein by reference. The information contained in Item 2.02 to this Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and the information shall not be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

Item 9.01   Financial Statements and Exhibits.

(c)

Exhibits.

Exhibit No.

Exhibit

     99.1

Press release issued October 28, 2009, by Questar Corporation.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

QUESTAR CORPORATION

   (Registrant)

October 29, 2009

/s/Richard J. Doleshek

Richard J. Doleshek

Executive Vice President and

Chief Financial Officer

List of Exhibits:

Exhibit No.

Exhibit

    99.1

Press release issued October 28, 2009, by Questar Corporation.

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