Exhibit 99.1

Saia Reports Fourth Quarter Results

JOHNS CREEK, GA – February 3, 2023 – Saia, Inc. (Nasdaq: SAIA), a leading transportation provider offering national less-than-truckload (LTL), non-asset truckload, expedited and logistics services, today reported fourth quarter 2022 financial results. Diluted earnings per share in the quarter were $2.65 compared to $2.76 in the fourth quarter of 2021. Full year diluted earnings per share were $13.40 in 2022 compared to $9.48 in 2021.

Highlights from the fourth quarter and full year operating results were as follows:

Fourth Quarter 2022 Compared to Fourth Quarter 2021 Results

Full Year 2022 Results Compared to Full Year 2021 Results

“Fourth quarter results were impacted by slowing volumes throughout the quarter and December tonnage per day was down 13.2%. Despite this softer freight environment, revenue grew by 6.3% and was a fourth quarter record. Revenue per shipment grew by 15% in the quarter, benefitting from solid pricing activity as well as increased fuel surcharge revenue versus the prior year,” stated Saia President and Chief Executive Officer, Fritz Holzgrefe.

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“Stepping back and looking at full-year results, it was another successful year for our company as we grew revenue by 22% and operating income by more than 40%. We opened 11 additional terminals this past year and have developed a robust pipeline of more than 30 properties to support additional openings in the years to come,” continued Holzgrefe. “Our expansion efforts are at the core of our strategy to enhance customer service and extend our high quality service offering into more communities where our customers do business and where we can offer quality LTL service to new customers. We are taking a measured approach to expansion in 2023 with five terminal openings scheduled for the first half and will be opportunistic with openings beyond those,” concluded Holzgrefe.

Saia Executive Vice President and Chief Financial Officer, Douglas Col added, “after another record year of financial performance, including a record full year operating ratio of 83.1%, our balance sheet positions us well for the inherent cyclicality we are facing in the industrial economy this year. With more than $187 million cash on hand at the end of the year, we feel good about our ability to continue to

invest in our fleet, technology, properties and our people in 2023.”

Financial Position and Capital Expenditures

We ended the fourth quarter of 2022 with $187.4 million of cash on hand and total debt of $31.0 million, which compares to $106.6 million of cash on hand and total debt of $50.4 million at December 31, 2021.

Net capital expenditures were $365.5 million in 2022, compared to $277.3 million in net capital expenditures in 2021. In 2023, we anticipate that net capital expenditures will be in excess of $400 million, subject to ongoing evaluation of market conditions.

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 1-888-440-5655 or 1-646-960-0338 referencing conference ID #9246157. Callers should dial in five to ten minutes in advance of the conference call. This call will be webcast live via the Company website at www.saia.com/about-us/investor-relations/financial-releases. A replay of the call will be offered two hours after the completion of the call through March 3, 2023 at 11:59 P.M. Eastern Time. The replay will be available by dialing 1-800-770-2030 or 1-647-362-9199 referencing conference ID #9246157.

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 187 terminals with service across 45 states. For more information on Saia, Inc. visit the Investor Relations section at www.saia.com/about-us/investor-relations.

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Cautionary Note Regarding Forward-Looking Statements

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 may contain 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 publicly update or revise any forward-looking statements, except as required by law. 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, uncertainties and assumptions include, but are not limited to, (1) general economic conditions including downturns or inflationary periods in the business cycle; (2) operation within a highly competitive industry and the adverse impact from downward pricing pressures, including in connection with fuel surcharges, and other factors; (3) industry-wide external factors largely out of our control; (4) cost and availability of qualified drivers, dock workers and other employees, purchased transportation and fuel; (5) inflationary increases in operating expenses and corresponding reductions of profitability; (6) claims expenses and other expense volatility, including for personal injury, cargo loss and damage, workers’ compensation, employment and group health plan claims; (7) cost and availability of insurance coverage, including the possibility the Company may be required to pay additional premiums, assume additional liability under its auto liability policies or be unable to obtain insurance coverage; (8) failure to successfully execute the strategy to expand our service geography; (9) costs and liabilities from the disruption in or failure of our technology or equipment essential to our operations, including as a result of cyber incidents, security breaches, malware or ransomware attacks; (10) failure to keep pace with technological developments; (11) labor relations, including the adverse impact should a portion of our workforce become unionized; (12) cost, availability and resale value of real property and revenue equipment; (13) supply chain disruption and delays on new equipment delivery; (14) capacity and highway infrastructure constraints; (15) risks arising from international business operations and relationships; (16) seasonal factors, harsh weather and disasters caused by climate change; (17) economic declines in the geographic regions or industries in which our customers operate; (18) the creditworthiness of our customers and their ability to pay for services; (19) our need for capital and uncertainty of the credit markets; (20) the possibility of defaults under our debt agreements, including violation of financial covenants; (21) failure to operate and grow acquired businesses in a manner that support the value allocated to acquired businesses; (22) dependence on key employees; (23) employee turnover from changes to compensation and benefits or market factors; (24) increased costs of healthcare benefits; (25) damage to our reputation from adverse publicity, including from the use of or impact from social media; (26) failure to make future acquisitions or to achieve acquisition synergies; (27) the effect of litigation and class action lawsuits arising from the operation of our business, including the possibility of claims or judgments in excess of our insurance coverages or that result in increases in the cost of insurance coverage or that preclude us from obtaining adequate insurance coverage in the future; (28) the potential of higher corporate taxes and new regulations, including with respect to climate change, employment and labor law, healthcare and securities regulation; (29) the effect of governmental regulations, including hours of service and licensing compliance for drivers, engine emissions, the Compliance, Safety, Accountability (CSA) initiative, regulations of the Food and Drug Administration and Homeland Security, and healthcare and

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environmental regulations; (30) unforeseen costs from new and existing data privacy laws; (31) changes in accounting and financial standards or practices; (32) widespread outbreak of an illness or any other communicable disease, including the COVID-19 pandemic, or any other health crisis or business disruptions and higher costs that may arise from the COVID-19 pandemic in the future, including governmental regulations requiring that employees be vaccinated or be tested regularly for COVID-19 before reporting to work; (33) increasing investor and customer sensitivity to social and sustainability issues, including climate change; (34) provisions in our governing documents and Delaware law that may have anti-takeover effects; (35) issuances of equity that would dilute stock ownership; and (36) 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. Accordingly, 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. You should not place undue reliance on the forward-looking statements, which speak only as of the date of this news release. We are under no obligation, and we expressly disclaim any obligation, to update or alter any forward-looking statements, whether as a result of new information, future events or otherwise, except as otherwise required by law.

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CONTACT: Saia, Inc.

Douglas Col

Executive Vice President and Chief Financial Officer

Investors@saia.com