Exhibit 99.1

Saia Reports First Quarter Earnings per Share of $0.34

Revenues rose 9.5% on 5.7% LTL tonnage growth

JOHNS CREEK, GA. – April 25, 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 first quarter 2014 results on solid tonnage growth despite difficult winter weather. 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.

First Quarter 2014 Compared to First Quarter 2013 Results

“Saia’s first quarter results are very gratifying, given the disruptive weather patterns that challenged our entire industry. Our ability to handle nearly 6% more tons in this year’s first quarter while maintaining solid service metrics is a direct result of the talents and commitment of our entire workforce. Saia’s customers continue to appreciate our value-proposition and we were able to improve LTL pricing by 2.3% in the quarter,” said Saia President and Chief Executive Officer, Rick O’Dell.

“In addition to the harsh weather, quarterly results were further unfavorably impacted by higher accident severity and increased usage of costly purchased transportation. With the operational challenges of the first quarter weather behind us, we are encouraged about our prospects for the remainder of 2014. We continue to invest in new equipment and technology, both necessary to drive efficiency and reliability across our service network. I believe that Saia’s consistent message of service, operational excellence and focused pricing position us well for increasing shareholder and customer value,” O’Dell said.

Financial Position and Capital Expenditures

Total debt was $79.7 million at March 31, 2014 resulting in net debt to total capital of 20.0%. This compares to total debt of $58.8 million and net debt to total capital of 18.1% at the end of last year’s first quarter.

Saia, Inc. First Quarter 2014 Results

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Net capital expenditures in the first quarter were $8.2 million. The Company currently projects net capital expenditures in 2014 of approximately $110 million, an increase of $25 million over our January forecast. This increased level of investment primarily allows for expansion of the linehaul trailer fleet in addition to the already planned 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 888-364-3108 or 719-457-2727 referencing conference ID #8928397. 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 May 1, 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; 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 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 healthcare reform legislation and other financial,

Saia, Inc. First Quarter 2014 Results

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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 Ended March 31, 2014 and 2013

(Amounts in thousands, except per share data)

(Unaudited)

Saia, Inc. and Subsidiaries

Condensed Consolidated Statements of Cash Flows

For the Quarters Ended March 31, 2014 and 2013

(Amounts in thousands)

(Unaudited)

Saia, Inc. and Subsidiaries

Financial Information

For the Quarters Ended March 31, 2014 and 2013

(Unaudited)