Exhibit 99

For Immediate Release                   Contact: Rick DeLisi
March 19, 2004            Director, Corporate Communications
Page 1 of 2                                   (703) 650-6019

       Atlantic Coast Airlines Holdings, Inc. Announces
  Extension to Option Period for Convertible Notes Offering

Dulles,  VA,  (March  19,  2004) -  Atlantic  Coast  Airlines
Holdings, Inc. (Nasdaq/NM: ACAI) today announced that it  has
extended  until April 19, 2004 the date by which the  initial
purchaser  of  Atlantic Coast Airlines  Holdings,  Inc.'s  6%
Convertible  Notes  must  exercise  its  option  to  purchase
additional notes from Atlantic Coast Airlines Holdings, Inc.

On  February 18, 2004, Atlantic Coast Airlines Holdings, Inc.
announced that it was offering $125 million of 6% Convertible
Notes due 2034 to qualified institutional buyers pursuant  to
Rule 144A under the Securities Act of 1933.  The sale of  the
notes  closed on February 25, 2004.  In connection with  this
sale,  Atlantic  Coast  Holdings, Inc.  granted  the  initial
purchaser an option to purchase, on or before March 22, 2004,
up  to  an  additional $25 million principal  amount  of  the
Notes. Atlantic Coast Airlines Holdings, Inc. and the initial
purchaser  have  agreed to extend the option exercise  period
through April 19, 2004.

This  press release does not constitute an offer to  sell  or
the  solicitation of an offer to buy securities and shall not
constitute an offer, solicitation or sale in any jurisdiction
in  which  such offer, solicitation or sale is unlawful.  The
notes  and the common stock issuable upon conversion  of  the
notes  have not been registered under the Securities  Act  of
1933  or  applicable  state securities laws  and,  unless  so
registered,  may not be offered or sold in the United  States
except   pursuant  to  an  exemption  from  the  registration
requirements  of  the  Securities Act  and  applicable  state
securities laws.

Atlantic   Coast   Airlines  currently  operates   as   Delta
Connection  and United Express in the Eastern and  Midwestern
United  States  as  well as Canada.  On July  28,  2003,  the
company announced plans to establish a new, independent  low-
fare  airline  to be based at Washington Dulles International
Airport-to  be  called Independence Air.  The company  has  a
fleet  of  144  aircraft-including a total  of  120  regional
jets-and   offers   800   daily   departures,   serving    80
destinations.   ACA  employs  approximately  4,100   aviation
professionals.

For  more information about Atlantic Coast Airlines Holdings,
Inc.,  please  visit  our website at atlanticcoast.com.   For
more  information  about Independence Air, please  visit  our
"preview" site at flyi.com.

                           (-more-)

Atlantic Coast Airlines Holdings, Inc. Announces Extension to
Option Period for Convertible Notes Offering
Page 2 of 2

Statements  in  this press release and by Company  executives
regarding  its implementation of new business strategies,  as
well  as regarding operations, earnings, revenues and  costs,
represent forward-looking information. A number of risks  and
uncertainties  exist  which could  cause  actual  results  to
differ  materially from these projected results. These  risks
and  uncertainties  are  more  fully  disclosed  under  "Risk
Factors"   and  "Management's  Discussion  and  Analysis   of
Financial  Condition  and  Results  of  Operations"  in   the
Company's  Annual  Report on Form 10-K  for  the  year  ended
December 31, 2003. These statements are made as of March  19,
2004 and Atlantic Coast Airlines Holdings, Inc. undertakes no
obligation  to  update any such forward-looking  information,
including as a result of any new information, future  events,
changed expectations or otherwise.

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