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                            DART GROUP CORPORATION
                               3300 75TH AVENUE
                           LANDOVER, MARYLAND 20785
 
                                                                 April 15, 1998
 
Dear Stockholder:
 
  We are pleased to report that Dart Group Corporation (the "Company") has
entered into a merger agreement with Richfood Holdings, Inc. ("Richfood") and
one of its subsidiaries that provides for the acquisition of the Company by
Richfood at a price of $160.00 per share in cash. Under the terms of the
proposed transaction, a Richfood subsidiary is today commencing a cash tender
offer for all outstanding shares of the Company's common stock at $160.00 per
share. Following the successful completion of the tender offer, the Richfood
subsidiary will be merged into the Company and all shares not purchased by the
Richfood subsidiary in the tender offer will be converted into the right to
receive $160.00 per share in cash in the merger.
 
  YOUR BOARD OF DIRECTORS HAS UNANIMOUSLY APPROVED THE RICHFOOD TENDER OFFER
AND DETERMINED THAT THE TERMS OF THE TENDER OFFER AND THE MERGER, TAKEN
TOGETHER, ARE FAIR TO, AND IN THE BEST INTERESTS OF, THE COMPANY AND ITS
STOCKHOLDERS. ACCORDINGLY, THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS
ACCEPTANCE OF THE RICHFOOD TENDER OFFER AND APPROVAL AND ADOPTION OF THE
MERGER AGREEMENT BY THE STOCKHOLDERS OF THE COMPANY.
 
  In arriving at its recommendations, the Board of Directors gave careful
consideration to a number of factors. These factors included the opinion dated
April 8, 1998, of Wasserstein Perella & Co., Inc. ("Wasserstein Perella"),
financial advisor to the Company, to the effect that, as of such date and
based upon and subject to certain matters stated in such opinion, the cash
consideration of $160.00 per share to be received by Company stockholders
(other than Richfood and its affiliates) in the offer and the merger was fair
from a financial point of view to such stockholders.
 
  Accompanying this letter is a copy of the Company's
Solicitation/Recommendation Statement on Schedule 14D-9. Also enclosed is
Richfood's Offer to Purchase and related materials, including a Letter of
Transmittal for use in tendering shares. We urge you to read carefully the
enclosed materials, including Wasserstein Perella's opinion, which is attached
to the Schedule 14D-9.
 
  The management and directors of Dart Group Corporation thank you for the
support you have given the Company.
 
                                       Sincerely,
 
                                       /s/ Richard B. Stone
 
                                       Richard B. Stone
                                       Chairman of the Board
                                       and Chief Executive Officer
