Exhibit 99.1

FOR RELEASE THURSDAY, OCTOBER 31, 2013

IRIDIUM ANNOUNCES THIRD-QUARTER 2013 RESULTS

MCLEAN, Va. – October 31, 2013 – Iridium Communications Inc. (Nasdaq:IRDM) (“Iridium”) today reported financial results for the third quarter of 2013 and affirmed its recently updated full-year 2013 outlook. The Company also withdrew its long-range outlook as it continues to evaluate the impact of lower commercial equipment sales and commercial subscriber additions on its operating plan. Net income was $16.6 million, or $0.19 per diluted share, for the third quarter of 2013, as compared to $17.8 million, or $0.23 per diluted share, for the third quarter of 2012. Operational EBITDA (“OEBITDA”)⁽¹⁾ for the third quarter was $53.3 million, as compared to $57.6 million for the prior-year period, representing a year-over-year decline of 7 percent and an OEBITDA margin⁽¹⁾ of 53 percent. OEBITDA fell largely due to a decrease in equipment revenue and higher projected Iridium OpenPort^® warranty-related costs.

Iridium reported third-quarter total revenue of $100.6 million, which consisted of $75.4 million of service revenue and $25.2 million of equipment, engineering and support revenue. Total revenue was unchanged versus the comparable period of 2012, while service revenue grew 6 percent from the year-ago period. Service revenue, which represents primarily recurring revenue from Iridium’s growing subscriber base, was 75 percent of total revenue for the third quarter of 2013 as compared to 71 percent in the year-ago period.

The Company ended the quarter with 655,000 total billable subscribers, which compares to 595,000 for the year-ago period and is up from 647,000 for the quarter ended June 30, 2013. Total billable subscribers grew 10 percent year-over-year, driven by strength in machine-to-machine (“M2M”) and commercial voice customers.

“We’re pleased to have recently closed on landmark services and support contracts with the U.S. Department of Defense, reaffirming the importance of Iridium’s solutions to our single biggest customer,” said Matt Desch, CEO, Iridium. “These agreements totaling $438 million over five years provide us with growing and predictable cash flow during the Iridium NEXT construction and launch period. Importantly, it gives our government subscribers stable, low-cost and more universal access to our network as their demand grows and they take full advantage of its capabilities. It’s an undeniable win-win as we look ahead to extending our more than decade-long relationship.”

Desch continued, “Our current network continues to be the best in the industry, and with the recent completion of the Critical Design Review for the entire Iridium NEXT satellite system, we remain on track and on budget for our first launch in about 15 months. This important milestone signifies a transition from the design phase to the fabrication and testing phase of our next-generation constellation. From here, we’ll embark on flight qualification and testing activities that will ultimately culminate in a ramp to full-scale satellite production by mid-2014. Despite strong progress in these critical areas, we’re still tackling challenges in a couple areas of our commercial business that caused us to further revise our outlook. We remain cautiously optimistic that our Iridium Pilot^® product will rebound nicely in 2014, but are still bearing the costs and disruption of transitioning our maritime customers to an improved platform. And, while we’re maintaining our subscriber and revenue share in the handset business, this market has undoubtedly slowed down in the last few quarters. We benefit from a strong competitive position in this space, and will continue to develop innovative new products and services that capture incremental revenue.”

Iridium Business Highlights

Service – Commercial

Commercial service remained the largest part of Iridium’s business, representing 61 percent of the Company’s total revenue during the third quarter. The Company’s commercial customer base is diverse and includes markets such as maritime, aviation, oil and gas, mining, recreation, forestry, construction, transportation and emergency services. These customers rely on Iridium’s products and services as critical to their daily operations and integral to their communications and business infrastructure.

Service – Government

Iridium’s voice and data solutions improve situational awareness for military personnel and track critical assets in tough environments around the globe, providing a unique value proposition that is not easily duplicated. The Company was recently awarded two Defense Information Systems Agency contracts, which include a $400 million, five-year, fixed-price agreement renewing its satellite communications services relationship and a $38 million deal to support and maintain the Department Of Defense’s dedicated gateway.

Equipment

Engineering & Support

Capital expenditures were $111.8 million for the third quarter and primarily related to spending for the Company’s next-generation satellite constellation, Iridium NEXT, and upgraded ground network infrastructure at its commercial gateway. The Company ended the third quarter with a cash and marketable securities balance of $270.3 million and gross debt of $936.3 million. Net debt was $585.0 million.

2013 and 2014 Outlook

The Company affirmed its recently updated full-year 2013 outlook for total billable subscriber growth, total service revenue growth and OEBITDA. Iridium also issued its preliminary outlook for full-year 2014 OEBITDA. The Company expects:

Long-Range Outlook

“While we withdrew certain elements of our long-range outlook today as we continue to evaluate the impact of lower commercial equipment sales and commercial subscriber additions on our operating plan, we remain confident in our future prospects,” said Tom Fitzpatrick, CFO, Iridium. “We compete in attractive and growing markets with high barriers to entry and have a strong competitive position across our business lines. In the M2M space, we believe our global, near real-time solutions will continue to support double-digit expansion for a market that still has significant upside in terms of device penetration. Our leadership in the commercial voice market is strong and defensible and we believe that new products will allow us to pick up additional revenue.”

Fitzpatrick added, “As for the maritime market, we’re working diligently to put our recent product issues behind us and continue to see a ramp back up to growth as we look ahead to 2014. We serve an important role in the value segment of this sector, and our partners are working closely with us to succeed here. Finally, we delivered on a groundbreaking U.S. government services contract, which provides us with growing and predictable cash flow from a customer that represents 20% of our total revenue. When we consider all of these attributes of our core business, along with the potential of our Aireon joint venture and Iridium PRIME^SM hosted payload solution, our fundamental path for creating value remains solid despite these short-term challenges.”

Iridium withdrew certain elements of its long-range outlook as it continues to evaluate the impact of lower commercial equipment sales, lower commercial subscriber additions and the long-term revenue potential of its recently announced Iridium PRIME hosted payload initiative. The Company expects to issue its new outlook in early 2014 in conjunction with its fourth-quarter earnings results.

Non-GAAP Financial Measures & Definitions

Supplemental Reconciliation of GAAP Net Income to Operational EBITDA

Conference Call Information

As previously announced, the Company will host a conference call to discuss its results at 8:30 a.m. ET on Thursday, October 31, 2013. Callers should dial (877) 334-1964 (U.S. only) or (631) 291-4574 (from outside the U.S.) to access the call. The conference call will also be simultaneously webcast on Iridium’s Investor Relations webpage at www.iridium.com. A replay of the conference call will be available beginning Thursday, October 31, 2013 through Thursday, November 7, 2013 at Iridium’s Investor Relations webpage. Callers can also dial (855) 859-2056 (U.S. only) or (404) 537-3406, Access Code 30393684, for an audio replay of the conference call.

About Iridium Communications Inc.

Iridium^® is the only mobile voice and data satellite communications network that spans the entire globe. Iridium enables connections between people, organizations and assets to and from anywhere, in real time. Together with its ever-expanding ecosystem of partner companies, Iridium delivers an innovative and rich portfolio of reliable solutions for markets that require truly global communications. The company has a major development program underway for its next-generation network – Iridium NEXT. Iridium Communications Inc. is headquartered in McLean, Va., U.S.A., and its common stock trades on the NASDAQ Global Select Market under the ticker symbol IRDM. For more information about Iridium products, services and partner solutions, visit www.iridium.com. IRDM-F

Forward-Looking Statements

Statements in this press release that are not purely historical facts may constitute forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements regarding Iridium’s expectations with respect to total billable subscriber growth, total service revenue growth and OEBITDA for the full-year 2013; average service revenue growth, OEBITDA margin, cash taxes, net leverage and rate of deleveraging in the longer-term; the development of and timing for launch of Iridium NEXT; anticipated equipment revenue; expected revenue from Iridium’s new contracts with the U.S. Department of Defense; expected engineering and support revenue; sales of Iridium Pilot and the development and launch of, and expected revenue from, new products and services. Forward-looking statements can be identified by the words “anticipates,” “may,” “can,” “believes,” “expects,” “projects,” “intends,” “likely,” “will,” “to be” and other expressions that are predictions or indicate future events, trends or prospects. These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance or achievements of Iridium to differ materially from any future results, performance or achievements expressed or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to, uncertainties regarding increases in customer demand for Iridium’s products and services, including demand from the U.S. Government; Iridium’s ability to maintain the health, capacity and content of its satellite constellation; the development of and transition to Iridium NEXT, including expanded capacity and features; and the development of and market for Iridium’s products and services, as well as general industry and economic conditions, and competitive, legal, governmental and technological factors. Other factors that could cause actual results to differ materially from those indicated by the forward-looking statements include those factors listed under the caption “Risk Factors” in the Company’s Form 10-K for the year ended December 31, 2012, filed with the Securities and Exchange Commission (“the SEC”) on March 5, 2013, and the Company’s Form 10-Q for the quarter ended September 30, 2013, filed with the SEC on October 31, 2013, as well as other filings Iridium makes with the SEC from time to time. There is no assurance that Iridium’s expectations will be realized. If one or more of these risks or uncertainties materialize,

or if Iridium’s underlying assumptions prove incorrect, actual results may vary materially from those expected, estimated or projected. Iridium’s forward-looking statements speak only as of the date of this press release, and Iridium undertakes no obligation to update forward-looking statements.

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Summary Revenue and OEBITDA Highlights

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Subscriber Highlights