Exhibit 99.1

Saia Reports Fourth Quarter Earnings per Share of $0.32

Revenues were $280 million with operating income increasing 46%

JOHNS CREEK, GA. – January 31, 2014 – Saia, Inc. (NASDAQ: SAIA), a leading transportation provider offering multi-regional less-than-truckload (LTL), non-asset truckload and logistics services, today reported improved fourth quarter 2013 results driven by effective revenue management and operational efficiencies. All prior period share and per share data in this release have been adjusted to reflect the Company’s June 2013 three for two stock split.

Fourth Quarter 2013 Compared to Fourth Quarter 2012 Results

“Saia’s Quality Matters initiative continues to be the guiding force in advancing our value proposition in the marketplace. Saia employees across our organization are focused on providing consistent, superior customer service. These efforts have fueled another quarter of meaningful yield increase which combined with efficiency and technology initiatives led us to a 45% increase in earnings per share compared to the fourth quarter last year” said Saia President and Chief Executive Officer Rick O’Dell.

“Investments in technology, equipment and continuous on-going employee training have allowed Saia to post its ninth consecutive quarter of 98% on-time service. The combination of strong service and our committed pricing effort enabled Saia to improve its operating ratio by 150 basis points versus fourth quarter last year. With our recently expanded sales force, Saia ended the year with improving tonnage trends and we believe we are well positioned to grow our market share going forward,” O’Dell said.

2013 Results Compared to 2012 Results

Saia, Inc. Fourth Quarter 2013 Results

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Financial Position and Capital Expenditures

Total debt was $76.9 million at December 31, 2013. Net of the Company’s $0.2 million cash balance at quarter end, debt to total capital was 20.1%. This compares to total debt of $60.7 million and net debt to total capital of 19.2% in the prior year quarter.

Net capital expenditures in 2013 were $122 million. This compares to $83 million in the prior year. The Company currently plans net capital expenditures in 2014 of approximately $85 million. This expenditure level reflects primarily replacement of revenue equipment, and investments in technology and real estate projects.

Conference Call

Management will hold a conference call to discuss quarterly results today at 11:00 a.m. Eastern Time. To participate in the call, please dial 888-500-6950 or 719-457-2697 referencing conference ID #7135869. Callers should dial in five to ten minutes in advance of the conference call. This call will be webcast live via the Company web site at www.saiacorp.com. A replay of the call will be offered two hours after the completion of the call through February 6, 2014 at 2:00 p.m. Eastern Time. The replay will be available by dialing 1-888-203-1112 or 719-457-0820.

Saia, Inc. (NASDAQ: SAIA) offers customers a wide range of less-than-truckload, non-asset truckload, expedited and logistics services. With headquarters in Georgia, Saia LTL Freight operates 147 terminals in 34 states. For more information on Saia, Inc. visit the Investor Relations section at www.saiacorp.com.

The Securities and Exchange Commission encourages companies to disclose forward-looking information so that investors can better understand the future prospects of a company and make informed investment decisions. This news release contains these types of statements, which are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

Words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “may,” “plan,” “predict,” “believe,” “should” and similar words or expressions are intended to identify forward-looking statements. Investors should not place undue reliance on forward-looking statements and the Company undertakes no obligation to update or revise any forward-looking statements. All forward-looking statements reflect the present expectation of future events of our management as of the date of this news release and are subject to a number of important factors, risks, uncertainties and assumptions that could cause actual results to differ materially from those described in any forward-looking statements. These factors, risks, assumptions and uncertainties include, but are not limited to, general economic conditions including downturns in the business cycle; the creditworthiness of our customers and their ability to pay for services; competitive initiatives and pricing pressures, including in connection with fuel surcharge; the Company’s need for capital and uncertainty of the current credit markets; the possibility of defaults under the Company’s debt agreements (including violation of financial covenants); possible issuance of equity which would dilute stock ownership; integration risks; indemnification obligations associated with the 2006 sale of Jevic Transportation, Inc.; the effect of litigation including class action lawsuits; cost and availability of qualified drivers, fuel, purchased transportation, real property, revenue equipment and other assets; governmental regulations, including but not limited to Hours of Service, engine emissions, the “Compliance, Safety, Accountability” (CSA) initiative, compliance with legislation requiring companies to evaluate their internal control over

Saia, Inc. Fourth Quarter 2013 Results

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financial reporting, changes in interpretation of accounting principles and Homeland Security; dependence on key employees; inclement weather; labor relations, including the adverse impact should a portion of the Company’s workforce become unionized; effectiveness of Company-specific performance improvement initiatives; terrorism risks; self-insurance claims and other expense volatility; increased costs as a result of recently enacted healthcare reform legislation and other financial, operational and legal risks and uncertainties detailed from time to time in the Company’s SEC filings. As a result of these and other factors, no assurance can be given as to our future results and achievements. A forward looking statement is neither a prediction nor a guarantee of future events or circumstances and those future events or circumstances may not occur.

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Saia, Inc. and Subsidiaries

Condensed Consolidated Balance Sheets

(Amounts in thousands)

(Unaudited)

Saia, Inc. and Subsidiaries

Consolidated Statements of Operations

For the Quarters and Years Ended December 31, 2013 and 2012

(Amounts in thousands, except per share data)

(Unaudited)

Saia, Inc. and Subsidiaries

Condensed Consolidated Statements of Cash Flows

For the Years Ended December 31, 2013 and 2012

(Amounts in thousands)

(Unaudited)

Saia, Inc. and Subsidiaries

Financial Information

For the Quarters Ended December 31, 2013 and 2012

(Unaudited)