Exhibit 99.1

For more information contact:

Jennifer Moreno Reddick

Executive Director, Investor Relations

312.573.5634

jennifer.morenoreddick@navigant.com

NAVIGANT REPORTS STRONG THIRD QUARTER RESULTS AND

RAISES FULL YEAR FINANCIAL OUTLOOK

CHICAGO, October 27, 2011 – Navigant (NYSE:NCI) today announced financial results for the third quarter ended September 30, 2011.

“Our third quarter results reflect the continued, successful execution of our long-term strategy,” stated William Goodyear, Chairman and Chief Executive Officer. “Our focus on the Energy, Healthcare, Disputes and Economics businesses remains sharp and we continue to benefit from strong ongoing demand in these key areas.”

Goodyear continued, “We are pleased with our solid and improving performance over the first nine months of the year, our strong cash flow, and our significantly reduced leverage. As a result of this positive outlook, we plan to begin buying back shares under renewed Board authority on an ongoing basis, reflecting our confidence in Navigant’s long-term strategy.”

Third Quarter 2011 Results

The Company’s third quarter 2011 results are summarized as follows:

Navigant reported third quarter 2011 RBR of $182 million, up 19% from third quarter 2010 and 5% from second quarter 2011. Third quarter top line results were driven by continued steady demand in the Company’s core areas of business. Consultant utilization averaged 78% in third quarter 2011, up from 73% in third quarter 2010 and down from 80% in second quarter 2011. Average billable full time equivalents (FTEs) were 1,838 in third quarter 2011, up 11% from third quarter 2010 and 4% from second quarter 2011. Average bill rate (excluding performance based fees) was $275 for the third quarter 2011 period, up from $267 in third quarter 2010 and down from $277 in second quarter 2011.

Both RBR and operating profit improved for every segment on a year over year basis, reflecting the impact of acquisitions and new hire investments made in 2010, as well as steadily improving market demand. Net cash flow provided by operating activities was a strong $40 million in third quarter 2011, up significantly from $6 million in third quarter 2010.

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Business Segment Highlights

Navigant’s Business Consulting Services segment reported RBR of $81 million in third quarter 2011, up 39% from third quarter 2010 and 13% from second quarter 2011. The Healthcare and Energy practices continue to be core growth drivers; combined, their third quarter 2011 RBR was up nearly 30% from the year ago period. Segment results included performance based fees related to the successful closing of a number of healthcare transactions. Segment utilization was 82% in third quarter 2011, compared to 79% in third quarter 2010 and 83% in second quarter 2011. Average billable FTEs for the segment were 938 in third quarter 2011, up 33% from third quarter 2010 and 4% from second quarter 2011.

The Company’s Dispute and Investigative Services segment continued to operate at a consistently high level with RBR of $67 million in third quarter 2011, up modestly from both third quarter 2010 and second quarter 2011. Segment utilization was 75% in third quarter 2011, compared to 72% in third quarter 2010 and 81% in second quarter 2011. Average billable FTEs for the segment were 594 in third quarter 2011, down 5% from third quarter 2010 while up 6% from second quarter 2011. Average bill rate for the segment was $320 in third quarter 2011, up from $296 in third quarter 2010 and $314 in second quarter 2011. The primary sources of third quarter 2011 Dispute and Investigative Services engagement opportunities included the credit crisis arena, anti money laundering projects, healthcare compliance issues and international arbitration matters.

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The Company’s Economic Consulting segment reported RBR of $17 million, up 3% from third quarter 2010 and down 8% from second quarter 2011. Segment utilization was 82% in third quarter 2011, compared to 69% in third quarter 2010 and 88% in second quarter 2011. Average billable FTEs were 118 in third quarter 2011. Average bill rate was $377 in third quarter 2011, up slightly from $375 in third quarter 2010 and $376 in second quarter 2011. Both antitrust and merger and acquisition related matters continue to generate engagements within the segment.

Navigant’s International Consulting segment continued to achieve year over year improvements and generated RBR of $17 million, up 29% from third quarter 2010 and 5% from second quarter 2011. Segment utilization was 60% in third quarter 2011, compared to 54% in third quarter 2010 and 62% in second quarter 2011. Average billable FTEs were 188 in third quarter 2011, on par with that of third quarter 2010 and up 7% from second quarter 2011. Average bill rate was $313 in third quarter 2011, up from $280 in third quarter 2010 and $303 in second quarter 2011. Solid demand in the areas of financial services and construction disputes were the primary drivers for the segment’s third quarter 2011 results.

Board Extends Share Repurchase Authority

Navigant’s Board of Directors extended its authorization to repurchase up to $100 million of common stock in open market or private transactions. The Board’s original authority to repurchase up to $100 million of common stock was due to expire on December 31, 2011 and has been extended through December 31, 2014. The Company anticipates that it will begin to repurchase shares under its extended authority during fourth quarter 2011 subject to market conditions.

Updated 2011 Outlook

“Based upon the strength of Navigant’s year-to-date performance, we are raising and tightening our 2011 financial outlook,” commented Goodyear. Estimated full year 2011 RBR is now expected to range between $690 and $700 million (previously $650 and $690 million) while total 2011 revenues are estimated to be between $770 and $780 million (previously $715 and $760 million). The range for adjusted earnings per share has been increased to between $0.77 and $0.80 (previously $0.70 and $0.77) for full year 2011, while adjusted EBITDA is estimated to be between $95 and $100 million (previously $95 and $105 million).

Conference Call Details

Goodyear will host a conference call to discuss the Company’s third quarter 2011 financial results at 10:00 a.m. Eastern Time on Thursday, October 27, 2011. The conference call may be accessed via the Navigant website (www.navigant.com/investor_relations) or by dialing 888.847.7597 (630.395.0268 for international callers) and referencing pass code “NCI.” A replay of the web cast will be available for approximately 90 days.

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About Navigant

Navigant (NYSE: NCI) is a specialized, global expert services firm dedicated to assisting clients in creating and protecting value in the face of critical business risks and opportunities. Through senior level engagement with clients, Navigant professionals combine technical expertise in Disputes and Investigations, Economics, Financial Advisory and Management Consulting, with business pragmatism in the highly regulated Construction, Energy, Financial Services and Healthcare industries. More information about Navigant can be found at www.navigant.com.

Statements included in this press release which are not historical in nature are forward-looking statements as defined within the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by words including “outlook,” “plans,” “goals,” “anticipates,” “believes,” “intends,” “estimates,” “expects” and similar expressions. These statements are based upon management’s current expectations and speak only as of the date of this press release. The Company cautions readers that there may be events in the future that the Company is not able to accurately predict or control and the information contained in the forward-looking statements is inherently uncertain and subject to a number of risks that could cause actual results to differ materially from those contained in or implied by the forward-looking statements including, without limitation: the success and timing of the Company’s implementation of its strategic business assessment; the success of the Company’s organizational changes and cost reduction actions; risks inherent in international operations, including foreign currency fluctuations; ability to make acquisitions; pace, timing and integration of acquisitions; impairment charges; management of professional staff, including dependence on key personnel, recruiting, attrition and the ability to successfully integrate new consultants into the Company’s practices; utilization rates; conflicts of interest; potential loss of clients; clients’ financial condition and their ability to make payments to the Company; risks inherent with litigation; higher risk client assignments; professional liability; potential legislative and regulatory changes; continued access to capital; and market and general economic conditions. Further information on these and other potential factors that could affect the Company’s financial results are included under the “Risk Factors” section and elsewhere in the Company’s filings with the Securities and Exchange Commission (SEC), which are available on the SEC’s website or at www.navigant.com/investor_relations. The Company cannot guarantee any future results, levels of activity, performance or achievement and undertakes no obligation to update any of its forward-looking statements.

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NAVIGANT CONSULTING, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(In thousands, except per share data)

(Unaudited)

NAVIGANT CONSULTING, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS AND SELECTED DATA

(In thousands, except DSO data)

(Unaudited)

NAVIGANT CONSULTING, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands, except per share data)

(Unaudited)

NAVIGANT CONSULTING, INC. AND SUBSIDIARIES

RECONCILIATION OF NON GAAP FINANCIAL MEASURES

(In thousands, except per share data)

(Unaudited)

Non-GAAP Financial Information

This press release includes certain non-GAAP financial measures as defined by the Securities and Exchange Commission. Reconciliations of these non-GAAP financial measures to the most directly comparable financial measure calculated and presented in accordance with generally accepted accounting principles (GAAP) are included in this press release. In recent years, the Company incurred significant severance expense directly related to its strategic realignment, as well as substantial staffing reductions made to meet weaker market demand primarily during the recessionary period which began at the end of 2008. During the quarter ended September 30, 2010, the Company reversed a portion of its reserve for future rent obligations for office consolidation as a result of re-occupying one floor in the New York area following the Daylight acquisition. Additionally, during the quarter ended September 30, 2010, the Company recorded a non recurring benefit from a tax election related to certain of its foreign entities. Adjusted EBITDA (earnings before interest, taxes, depreciation and amortization) and adjusted operating income exclude the impact of other operating benefit and severance and adjusted earnings per share excludes the net income impact of other operating benefit, severance and the non recurring benefit from a tax election related to certain of its foreign entities in all periods presented. Severance and other operating benefit are not considered to be non recurring, infrequent or unusual to our business, however, management believes providing investors with this information enhances the comparability of the Company’s operating performance across periods. While management believes that these non-GAAP financial measures are useful in evaluating the Company’s operations, this information should be considered as supplemental in nature and not as a substitute for or superior to, any measure prepared in accordance with GAAP.

EBITDA, Adjusted EBITDA, Adjusted operating income

EBITDA is not a measure of financial performance under GAAP. The Company believes EBITDA provides useful supplemental information for investors to evaluate financial performance. This data is also used by the Company for assessment of its operating and financial results, in addition to operating income, net income and other GAAP measures. Management believes EBITDA is a useful indicator of the Company’s financial and operating performance and its ability to generate cash flows from operations that are available for interest, debt service, taxes and capital expenditures. Investors should recognize that EBITDA might not be comparable to similarly-titled measures of other companies. Adjusted EBITDA and adjusted operating income excludes the impact of other operating benefit and severance as discussed above. This measure should be considered as supplemental in nature and not as a substitute for or superior to, any measure of performance prepared in accordance with GAAP.

Adjusted earnings per share

The Company discloses adjusted earnings per share to exclude the net income impact from other operating benefit, severance and non recurring foreign tax elections as discussed above. Management believes the adjusted earnings per share information provides additional insights into the Company’s ongoing operating performance. This measure should be considered as supplemental in nature and not as a substitute for or superior to, any measure of performance prepared in accordance with GAAP.