Attached files

file filename
EX-2.1 - EXHIBIT 2.1 (STOCK PURCHASE AGREEMENT) - KNIGHT TRANSPORTATION INCexhibit21.htm
EX-31.1 - EXHIBIT 31.1 (SECTION 302 CERTIFICATION - DAVID A. JACKSON) - KNIGHT TRANSPORTATION INCexhibit311.htm
EX-21.1 - EXHIBIT 21.1 (SUBSIDIARIES) - KNIGHT TRANSPORTATION INCexhibit211.htm
EX-32.1 - EXHIBIT 32.1 (SECTION 906 CERTIFICATION - DAVID A. JACKSON) - KNIGHT TRANSPORTATION INCexhibit321.htm
EXCEL - IDEA: XBRL DOCUMENT - KNIGHT TRANSPORTATION INCFinancial_Report.xls
10-K - FORM 10-K - KNIGHT TRANSPORTATION INCform10k.htm
EX-32.2 - EXHIBIT 32.2 (SECTION 906 CERTIFICATION - ADAM W. MILLER) - KNIGHT TRANSPORTATION INCexhibit322.htm
EX-31.2 - EXHIBIT 31.2 (SECTION 302 CERTIFICATION - ADAM W. MILLER) - KNIGHT TRANSPORTATION INCexhibit312.htm
 

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


We have issued our reports dated March 2, 2015, with respect to the consolidated financial statements, schedule, and internal control over financial reporting included in the Annual Report of Knight Transportation, Inc. on Form 10-K for the year ended December 31, 2014.  We hereby consent to the incorporation by reference of said reports in the Registration Statements of Knight Transportation, Inc. on Forms S-8 (File Nos. 333-72377, effective February 16, 1999, as amended, 333-105718, effective May 30, 2003, 333-126601, effective July 14, 2005, 333-152756, effective August 4, 2008, and 333-181547, effective May 18, 2012).

/s/ GRANT THORNTON LLP

Phoenix, Arizona
March 2, 2015