SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                    FORM 6-K


                        Report of Foreign Private Issuer


                        Pursuant to Rule 13a-16 or 15d-16
                     of the Securities Exchange Act of 1934


                          For the month of October 2006

                              RYANAIR HOLDINGS PLC
                 (Translation of registrant's name into English)

                      c/o Ryanair Ltd Corporate Head Office
                                 Dublin Airport
                              County Dublin Ireland
                    (Address of principal executive offices)


Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

                         Form 20-F..X.. Form 40-F.....


Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange
Act of 1934.

                               Yes ..... No ..X..


If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82- ________




Ryanair Holdings Plc



16th October 2006



Re: Holding in Company





A Letter from The Capital Group Companies, Inc dated 13th October 2006 to
Ryanair Holdings Plc, received by Ryanair Holdings Plc on the 13th October 2006.





Re: Section 67 Notification





Company Secretary:



          Enclosed is a Section 67 Notification dated 12 October 2006.



Please note that one or more of the affiliates of The Capital Group Companies,
Inc. have made notifications to your company pursuant to Section 67 in the past.
  For a description of our organisation, please visit our Web site at
www.capgroup.com.



For the purposes of this notification an outstanding share balance of
771,729,697 shares was used to calculate the percentages of holdings of the
relevant share capital which determine the notifiable interest.  We believe this
outstanding share balance is current; however, if this number is not accurate,
please contact us as soon as possible so we may make the necessary revisions to
this notification.



Should you have questions or require additional information, please contact Gina
Martinez or Vivien Tan at (213) 615 -0469, or send a fax message to (213)
486-9698.  Alternatively, you may contact us via E-mail at GRGroup@capgroup.com.



Vivian Tan

Compliance Associate

The Capital Group Companies, Inc.







A Letter from The Capital Group Companies, Inc. to Ryanair Holdings Plc dated 12
October 2006











                       Notification of Interests

                      (Section 67 Companies Act 1990)



This Notice is given by The Capital Group Companies, Inc. on behalf of its
affiliates, including Capital Research and Management Company, Capital
International,Inc., Capital International S.A., Capital Guardian Trust Company,
and Capital International Limited, pursuant to Section 67 of the Companies Act,
1990.



The interest in the relevant share capital indicated below arises by virtue of
holdings attributed to the Companies (see Schedule A).  These holdings form part
of funds managed on behalf of investment clients by the Companies.



Share capital to which this relates:

Ordinary Shares (including ADRs)



Number of shares in which the Companies have a notifiable interest:

70,196,826 Ordinary Shares (including ADRs)

Name(s) of registered holder(s):

See Schedule B





As of 12 October 2006



Ryanair Holdings Plc







Schedule A





                 Schedule of holdings in Ryanair Holdings, Plc

                             As of 12 October 2006







                                                                                            
Holdings by CG Management Companies and Funds:   Number of Shares                                Percent of Outstanding
The CAPITAL GROUP COMPANIES INC ("cg") HOLDINGS  70,196,826                                      9.096%


Capital Guardian Trust Company                   5,396,300                                       0.699%
Capital International Limited                    5,694,608                                       0.738%
                                                 1,050,835                                       0.136%

Capital International S.A.
Capital International Inc                        257,788                                         0.033%
Capital Research and Management Company          57,797,295                                      7.489%
EuroPacific Growth Fund                          34,479,500                                      4.468%






                 Schedule of holdings in Ryanair Holdings, Plc

                            As of 12 September 2006



                         CAPITAL GUARDIAN TRUST COMPANY



                                                        
Registered Name                                         Local Shares
Cede & Co                                               5,202,000

55 Water Street

New York, NY 10006
Alibank Nominees Limited                                194,300

Allied Irish Bank, Stock Exchange and Trust Services

Bank Centre, P.O.Box 512

Dublin, Ballsbridge

Total                                                   5,396,300







                        Schedule B







                         CAPITAL INTERNATIONAL LIMITED


Registered Name                                      Local Shares
Bank of New York Nominees                            609,823

Bank of New York

3 Birchin Lane

London EC3V 9BY
Northern Trust                                       346,954

C/O NorTrust Nominees Limited

155 Bishopsgate

London EC2M 3XS
Cede & Co                                            236,690

55 Water Street

New York

NY 10006
Citibank London                                      83,330

11 Old Jewry

London EC2R 8D8

UK
Nortrust Nominees                                    34,434

155 Bishopsgate

London EC2M 3XS

United Kingdom
Bank of Ireland                                      921,845

Intl Financial Services Centre

1 Harbourmaster Place

Dublin 1
Allied Irish Bank Plc                                903,243

Stock Exchange and Trust Services

Bank Centre, P.O. Box 512

Ballsbridge, Dublin 4
State Street London Ltd                              360,900

12-13 Nicholas Ln

London EC4N 78N
MSS Nominees Limited                                 94,400

Midland Bank Plc

Mariner House, Pepys

London EC3N 4DA
State Street Bank & Trust Co                         51,686
Deutsche Bank AG                                     22,200

23 Great Winchester Street

London EC2P 2AX

United Kingdom
Mellon Bank N.A.                                     5,600

London Branch

London

United Kingdom
Alibank Nominees Limited                             967,043

Allied Irish Bank, Stock Exchange and Trust Services

Bank Centre, P.O. Box 512

Dublin, Ballsbridge
Bank of Ireland Nominees Limited                     583,700

Bank of Ireland

International Financial Services Center

1 Harbourmaster Place
AIB Custodial Nominees Limited                       154,300
Clydesdale Bank PLC                                  11,800
JP Morgan Chase Bank                                 306,660
Total                                                5,694,608







                           Capital International S.A




Registered Name                                         Local Shares
Cede & Co                                               781,435

55 Water Street

New York NY 10006
Bank of Ireland                                         11,400

Intl Financial Services Centre

1 Harbourmaster Place

Dublin 1
Bank of Ireland Nominees Limited                        249,000

Bank of Ireland

Intl Financial Services Centre

1 Harbourmaster Place
JP Morgan Chase Bank                                    9,000
Total                                                   1,050,835









                                   Schedule B



                           Capital International, Inc


Registered Name                                      Local Shares
Cede & Co                                            143,000

55 Water Street

New York, NY 10006
Alibank Nominees Limited                             114,788

Allied Irish Bank, Stock Exchange and Trust Services
Bank Centre, PO Box 512

Dublin, Ballsbridge
Total                                                257,788







                                   Schedule B



                    Capital Research and Management Company


Registered Name                                         Local Shares
Cede & Co                                               57,797,295

55 Water Street

New York, NY 10006
Total                                                   57,797,295










This announcement has been issued through the Companies Announcement Service of
                           the Irish Stock Exchange.







                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized.

                                    RYANAIR HOLDINGS PLC


Date: 16 October 2006

                                    By:___/s/ James Callaghan____

                                    James Callaghan
                                    Company Secretary & Finance Director