Exhibit 99.1

AFFINION GROUP HOLDINGS, INC. ANNOUNCES RESULTS FOR THE SECOND QUARTER ENDED

JUNE 30, 2018

GLOBAL LOYALTY REVENUE INCREASES 15% YEAR-OVER-YEAR

STAMFORD, Conn., July 26, 2018 – Affinion Group Holdings, Inc. (“Affinion Holdings” or the “Company”), a global leader in loyalty and customer engagement, announced today the financial results for the three month period ended June 30, 2018 (the “second quarter” or “quarter”).

Key Highlights

Notes: As of June 30, 2018, we have classified our Insurance Solutions business as discontinued operations and as held for sale. Results below are from continuing operations, which does not include the Insurance Solutions business.

“Our core businesses continued their solid performance in the second quarter, driven by 15% revenue growth and 14% Adjusted EBITDA growth in our Global Loyalty segment,” said Todd Siegel, the Company’s Chief Executive Officer. “Additionally, as previously announced, we are pleased to have reached an agreement for the sale of our Insurance business, which we anticipate closing in the third quarter of 2018.”

“Based on these developments, recent client wins and other key trends, we believe we have positioned the company for sustainable long-term success,” Siegel continued. “As for the remainder of the year, we will continue to focus on expanding our core Global Loyalty and Global Customer Engagement businesses and on enhancing our leadership position as a pure-play loyalty solutions company through our leading technology, data driven analytics and our loyalty and customer engagement solutions.”

Results Highlights

Notes: Adjusted EBITDA as referred to above excludes any pro forma impact of acquisitions and other actions. See Table 5 for a complete description of Adjusted EBITDA by segment and the related reconciliations to GAAP measures. See Table 6 for a complete description of Adjusted EBITDA and the related reconciliations to GAAP measures.

Second Quarter Net Revenues

Notes: As of January 1, 2018, the Company has adopted the new Revenue Recognition Standard (“ASC 606”) using the modified retrospective transition method. For more details regarding ASC 606 and its impact on the Company’s financial results, see the Company’s quarterly report on Form 10-Q for the quarter ended June 30, 2018.

Second Quarter Operating Results

Segment Commentary

Global Loyalty net revenues increased by $8.3 million, or 15.0%, for the three months ended June 30, 2018 to $63.8 million as compared to $55.5 million for the three months ended June 30, 2017. Net revenues include a $0.7 million increase as a result of the January 1, 2018 adoption of the new revenue recognition guidance. Under the prior revenue recognition guidance, net revenues would have increased $7.6 million, or 13.7%. Global Loyalty net revenues increased primarily due to increased growth with existing clients and launches with new clients.

Global Loyalty Segment EBITDA increased by $21.2 million to $24.7 million for the three months ended June 30, 2018 as compared to $3.5 million for the three months ended June 30, 2017. The second quarter of 2017 included a charge of $18.1 million recorded in relation to the remediation of an external gift card inventory cyber theft. The second quarter of 2018 includes a $0.7 million increase from the adoption of the new revenue recognition guidance. Excluding the gift card cyber theft and under the prior revenue recognition guidance, Segment EBITDA would have increased by $2.4 million, or 11.1%, primarily due to the higher net revenue partially offset by higher servicing costs.

Global Customer Engagement net revenues increased by $0.8 million, or 0.9%, to $89.8 million for the three months ended June 30, 2018 as compared to $89.0 million for the three months ended June 30, 2017.

2

Net revenues increased $3.2 million from the favorable impact of foreign exchange and decreased $2.4 million on a currency consistent basis.

Global Customer Engagement Segment EBITDA increased by $5.0 million to $15.0 million for the three months ended June 30, 2018 as compared to $10.0 million for the three months ended June 30, 2017. For the quarter, Global Customer Engagement Segment EBITDA increased from the higher net revenues along with lower operating expenses primarily due to lower employee related costs.

Legacy Membership and Package net revenues decreased by $11.0 million, or 30.0%, to $25.7 million for the three months ended June 30, 2018 as compared to $36.7 million for the three months ended June 30, 2017. Legacy Membership and Package net revenues decreased primarily due to the expected attrition of legacy members and cessation of new marketing campaigns and terminated programs with partners, including large financial institutions.

Legacy Membership and Package Segment EBITDA increased by $1.5 million to $9.7 million for the three months ended June 30, 2018 as compared to $8.2 million for the three months ended June 30, 2017. Legacy Membership and Package Segment EBITDA increased as the impact from lower net revenues was more than offset by lower marketing and commissions expense, lower operating costs, and lower general and administrative expenses.

Corporate costs include certain departmental service costs such as human resources, legal, corporate finance and accounting functions, and unallocated portions of information technology. Expenses, such as professional fees related to debt financing activities and stock compensation costs, are also recorded in corporate. Corporate costs increased by $7.8 million to $20.1 million for the three months ended June 30, 2018 as compared to $12.3 million for the three months ended June 30, 2017, primarily due to higher employee related costs and higher professional fees.

Selected Liquidity Data

At June 30, 2018, there was $1,297.4 million of Affinion Group, Inc.’s term loans outstanding (net of discounts) and $616.5 million (net of discounts) outstanding under Affinion Group, Inc.’s senior cash 12.5%/PIK step-up to 15.5% notes due 2022.

At June 30, 2018, there were outstanding borrowings of $44.9 million (net of discounts) against Affinion Group, Inc.’s revolving credit facility and $58.0 million of Affinion Group, Inc.’s credit facility was available for borrowing, after giving effect to the issuance of $5.0 million of letters of credit.

As of June 30, 2018, Affinion Group, Inc. was in compliance with the restrictive covenants under Affinion Group Inc.’s debt agreements.

For the six months ended June 30, 2018, Affinion Holdings’ net cash provided by operating activities was $45.9 million and the net loss attributable to Affinion Holdings was $52.8 million.

At June 30, 2018, Affinion Holdings had $49.8 million of unrestricted cash on hand.

The amendment to Affinion Group, Inc.’s credit facility was entered into on July 16, 2018. The Company expects to use substantially all of the net proceeds from the 2018 sale of the insurance division to repay debt at 103% of par, in accordance with the amended Affinion Group, Inc.’s credit facility.

Conference Call Information

Affinion Holdings will hold an informational call to discuss the results for the quarter ended June 30, 2018 at 10:00 a.m. (ET) on Thursday, July 26, 2018. The conference call will be broadcast live and can be accessed by dialing 1.866.394.8483 (domestic) or 1.706.758.1455 (international) and entering passcode 4234919. Interested parties should call at least ten (10) minutes prior to the call to register. The Company will also

3

provide an online Web simulcast of its conference call. The Web simulcast will be available online by visiting http://www.affinion.com/investors. A telephonic replay of the call will be available through midnight July 30, 2018 by dialing 1.855.859.2056 (domestic) or 1.404.537.3406 (international) and entering passcode 4234919.

Important Notes

The information presented in this release is a comparison of the unaudited consolidated results of operations for the three month period ended June 30, 2018 to the unaudited consolidated results of operations for the three month period ended June 30, 2017.

About Affinion Holdings

Affinion is one of the world’s leading loyalty and customer engagement solutions companies servicing over 250 million consumers with almost 6,150 client partner relationships and over 40 years of experience. We design, administer and fulfill loyalty and customer engagement programs that strengthen and expand the value of relationships for our leading clients around the globe, including many of the largest and most respected companies in the financial services, retail, travel, and internet commerce sectors. Based in Stamford, CT, the Company has approximately 3,860 employees located in 20 countries across the globe. For more information, visit www.affinion.com.

Safe Harbor Statement Under the U.S. Private Securities Litigation Reform Act of 1995

This press release may contain “forward-looking” statements as defined by the Private Securities Litigation Reform Act of 1995 or by the U.S. Securities and Exchange Commission (SEC) in its rules, regulations and releases. These statements include, but are not limited to, discussions regarding industry outlook, the Company’s expectations regarding the performance of its business, its liquidity and capital resources, its guidance for 2018 and the other non-historical statements. These statements can be identified by the use of words such as “believes” “anticipates,” “expects,” “intends,” “plans,” “continues,” “estimates,” “predicts,” “projects,” “forecasts,” and similar expressions. All forward-looking statements are based on management’s current expectations and beliefs only as of the date of this press release and are subject to risks, uncertainties and assumptions that could cause actual results to differ materially from those discussed in, or implied by, the forward-looking statements. Factors that could cause actual results to differ materially include, but are not limited to, risks related to general economic and business conditions and international and geopolitical events, a downturn in the credit card industry or changes in the techniques of credit card issuers, industry trends, foreign currency exchange rates, the effects of a decline in travel on the Company’s travel fulfillment business, termination or expiration of one or more agreements with its marketing partners or a reduction of the marketing of its services by one or more of its marketing partners, the Company’s substantial leverage, restrictions contained in its debt agreements, its inability to compete effectively, and other risks identified and discussed from time to time in reports filed by Affinion Holdings with the SEC, including Affinion Holdings’ most recent Annual Report on Form 10-K. Readers are strongly encouraged to review carefully the full cautionary statements described in these reports. Except as required by law, the Company undertakes no obligation to revise or update publicly any forward-looking statements to reflect events or circumstances after the date of this press release, or to reflect the occurrence of unanticipated events or circumstances.

4

TABLE 1

AFFINION GROUP HOLDINGS, INC.

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

AS OF JUNE 30, 2018 AND DECEMBER 31, 2017

(In millions, except share amounts)

5

TABLE 2

AFFINION GROUP HOLDINGS, INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2018 AND 2017

(In millions, except share and per share amounts)

6

TABLE 3

AFFINION GROUP HOLDINGS, INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

FOR THE SIX MONTHS ENDED JUNE 30, 2018 AND 2017

(In millions)

7

TABLE 4

AFFINION GROUP HOLDINGS, INC.

UNAUDITED SUPPLEMENTAL DATA FOR

SELECTED BUSINESS SEGMENTS

The following table provides data for selected business segments.

Amounts in thousands, except dollars per unit.

8

TABLE 5

AFFINION GROUP HOLDINGS, INC.

UNAUDITED OPERATING SEGMENT RESULTS

(In millions)

Net revenues, Segment EBITDA and Adjusted EBITDA by operating segment are as follows, including a reconciliation of Affinion Holdings’ income from operations for the three and six months ended June 30, 2018 and 2017 to Affinion Holdings’ Segment EBITDA, defined as income from operations before depreciation and amortization, and Adjusted EBITDA as defined in note (g) of Table 6:

9

TABLE 5 (cont.)

10

TABLE 6

AFFINION GROUP HOLDINGS, INC.

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

TO GAAP FINANCIAL MEASURES (UNAUDITED)

(In millions)

Set forth below is a reconciliation of Affinion Holdings’ consolidated net income (loss) attributable to Affinion Group Holdings, Inc. for the twelve months ended June 30, 2018 and the three and six months ended June 30, 2018 and 2017 to Affinion Holdings’ Adjusted EBITDA.

11

TABLE 7

AFFINION GROUP HOLDINGS, INC.

RECONCILIATION OF NET INCOME (LOSS) ATTRIBUTABLE TO AFFINION

GROUP HOLDINGS, INC. TO SEGMENT EBITDA (UNAUDITED)

(In millions)

Set forth below is a reconciliation of Affinion Holdings’ consolidated net loss attributable to Affinion Group Holdings, Inc. for the three and six months ended June 30, 2018 and 2017 to Affinion Holdings’ Segment EBITDA, defined as income from operations before depreciation and amortization.

12