Exhibit 99.1

Saia Reports Record Fourth Quarter and Full Year Results

JOHNS CREEK, GA. – February 4, 2019 – Saia, Inc. (NASDAQ: SAIA), a leading transportation provider offering multi-regional less-than-truckload (LTL), non-asset truckload, expedited and logistics services, today reported fourth quarter and year-end 2018 financial results.

Fourth quarter 2018 revenue and operating income increased 12.9% and 45.4%, respectively, compared to the fourth quarter of 2017.  Diluted earnings per share in the quarter were $0.97 compared to $1.82 in the fourth quarter 2017.  Fourth quarter 2017 adjusted diluted earnings per share¹ were $0.53.

For the full year 2018, revenue and operating income rose 17.7% and 49.1%, respectively.  Annual diluted earnings per share in 2018 were $3.99 compared to $3.49 in 2017.  Full year adjusted diluted earnings per share¹ were $2.19 in 2017.

During the fourth quarter of 2017, the Company recorded a reduction in deferred income tax liability that was required as a result of the passage of the Tax Cuts and Jobs Act.  The 2017 adjusted EPS for the fourth quarter and full year excludes the gain associated with the reduction of this liability.

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

Fourth Quarter 2018 Compared to Fourth Quarter 2017 Results

Full Year 2018 Results Compared to Full Year 2017 Results

“2018 was a record year for our company and our value proposition was supported by our consistent approach to pricing for profitability and supplemented by our growing presence in new markets in the Northeast”, said Saia Chief Executive Officer, Rick O’Dell.  “Business to and from the Northeast is running at an annualized rate of approximately

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$150 million exiting 2018 and we have four to six new terminal openings scheduled in new Northeastern markets in 2019”, O’Dell continued.

“Approximately 75% of the freight moves we are handling in the Northeast are for customers who were already using Saia in other markets and understand the value proposition we offer.  In the fourth quarter our on-time service metric averaged 98% and our cargo claims ratio was .75%”, stated O’Dell.

“Our yield in the fourth quarter improved by 12.0%, marking the 34^th consecutive quarter of year-over-year improvement.  As we are able to offer a more complete coverage map to customers, we add value to their supply chain and we are in a good position to grow with the customer”, concluded O’Dell.  

Financial Position and Capital Expenditures

Total debt was $122.9 million at December 31, 2018 and inclusive of the cash on-hand, net debt to total capital was 14.8%.  This compares to total debt of $132.9 million and net debt to total capital of 18.0% at December 31, 2017.

Net capital expenditures in 2018 were $251.7 million including equipment acquired with capital leases.  This compares to $217.0 million in net capital expenditures in 2017.  In 2019, we anticipate net capital expenditures of approximately $300 million.

Conference Call

Management will hold a conference call to discuss quarterly results today at 10:00 a.m. Eastern Time. To participate in the call, please dial 888-394-8218 or 323-794-2588 referencing conference ID #9174082.  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 March 4, 2019 at 1:00 p.m. Eastern Time.  The replay will be available by dialing 888-203-1112.

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 160 terminals in 41 states.  For more information on Saia, Inc. visit the Investor Relations section at www.saiacorp.com.

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. 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

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including downturns in the business cycle; (2) effectiveness of Company-specific performance improvement initiatives, including management of the cost structure to match shifts in customer volume levels; (3) the creditworthiness of our customers and their ability to pay for services; (4) failure to achieve acquisition synergies; (5) failure to operate and grow acquired businesses in a manner that supports the value allocated to these acquired businesses, including their goodwill; (6) economic declines in the geographic regions or industries in which our customers operate; (7) competitive initiatives and pricing pressures, including in connection with fuel surcharge; (8) loss of significant customers; (9) the Company’s need for capital and uncertainty of the credit markets; (10) the possibility of defaults under the Company’s debt agreements (including violation of financial covenants); (11) possible issuance of equity which would dilute stock ownership; (12) integration risks; (13) the effect of litigation including class action lawsuits; (14) cost and availability of qualified drivers, fuel, purchased transportation, real property, revenue equipment, technology and other assets; (15) the effect of governmental regulations, including but not limited to Hours of Service, engine emissions, the Compliance, Safety, Accountability (CSA) initiative, regulations of the Food and Drug Administration, compliance with legislation requiring companies to evaluate their internal control over financial reporting, Homeland Security, environmental regulations, tax law changes and potential changes to the North American Free Trade Agreement and to certain international tariffs; (16) changes in interpretation of accounting principles; (17) dependence on key employees; (18) inclement weather; (19) labor relations, including the adverse impact should a portion of the Company’s workforce become unionized; (20) terrorism risks; (21) self-insurance claims and other expense volatility; (22) cost and availability of insurance coverage, including the possibility the Company may be required to pay additional premiums under its auto liability policy; (23) increased costs of healthcare and prescription drugs, including as a result of healthcare reform legislation; (24) social media risks; (25) disruption in or failure of the Company’s technology including services essential to operations of the Company and/or cyber security risk; (26) failure to successfully execute the strategy to expand the Company’s service geography into the Northeastern United States; and (27) 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.

FOOTNOTE

¹Non-GAAP Financial Disclosure and Reconciliation:

The Tax Cuts and Jobs Act (the “Tax Act”) was enacted on December 22, 2017 and lowers U.S. corporate income tax rates as of January 1, 2018, among other changes.  The impact of the Tax Act for 2017 was a reduction of deferred income tax liability due to the effects of the remeasurement of deferred tax assets at lower enacted corporate tax rates.  Management believes that presenting the Company’s 2017 results excluding the Tax Act is meaningful as excluding this item increases the comparability of period-to-period results.  Diluted earnings per common share excluding the impact of the Tax Act for 2017 is a non-GAAP financial measure.  Non-GAAP financial measures do not have definitions under GAAP and may be defined differently by and not be comparable to similar non-GAAP measures used by other companies.  The table below presents the calculation of diluted earnings per common share, excluding the impact of the Tax Act from 2017:

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CONTACT:Saia, Inc.

Doug Col

dcol@saia.com

678.542.3910

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