<PAGE>
2,749,815 SHARES
GALILEO INTERNATIONAL, INC.
COMMON STOCK
Supplement to the Prospectus dated October 25, 2000
Notwithstanding anything to the contrary in the prospectus, the
following Selling Stockholders section replaces in its entirety the Selling
Stockholders section on pages 10-11 of the prospectus.
SELLING STOCKHOLDERS
The following table provides certain information as of October 25,
2000, regarding each selling stockholder's ownership of common stock and as
adjusted assuming the sale of all of the shares offered by this prospectus. All
of the shares being offered by the selling stockholders were acquired from us in
March 2000 in connection with the acquisition of Trip.com, Inc. by us. The
shares were issued pursuant to an exemption from the registration requirements
of the Securities Act of 1933. The shares are being registered by us pursuant to
a Merger Agreement dated February 7, 2000, among us, Trip.com and Galileo
Acquisition Co., in order to permit public secondary trading in the shares, and
the selling stockholders may offer the shares from time to time. The selling
stockholders have not had a material relationship with us within the past three
years other than as a result of the ownership of the shares.
<TABLE>
<CAPTION>
Number of shares
owned beneficially Number of Number of shares
before the shares being owned beneficially
The Selling Stockholders offering* offered after the offering
-------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C>
Richard Arzaga 28,757 8,630 20,127
Gilbert Asakawa 90 45 45
Kevin Blankenship 7,760 7,760 --
Donna Crafton 553 277 276
Lisa Crispin 1,026 1,026 --
Amy Davis 276 138 138
Patricia DeFazio 19,485 8,449 11,036
Matthew Doull 4,831 2,416 2,415
Christopher Feinstein 515 200 315
Roger George 8,374 8,374 --
The Latta Family Trust 2,094 2,094 --
Steven Graese 3,268 3,268 --
James Gregory 34,672 16,355 18,317
Charles J. Grimes 1,705 853 852
Jenna Hamrick 432 216 216
Russell Heithoff 1,147 1,147 --
Linda Hess 157 79 78
</TABLE>
<PAGE>
<TABLE>
<S> <C> <C> <C> <C>
Jennifer Hofmeister 285 143 142
Maya Iyengar 10,447 4,706 5,741
Iyengar Family Charitable Trust 20,000 14,970 5,030
Julie Jacobs 3,220 1,610 1,610
Regina Keating 20,934 10,467 10,467
Karen Kerchis 1,946 868 1,078
Ronald L. Kilgore 60 30 30
Qingping Kong 8,273 3,472 4,801
David Loy 1,736 1,736 --
Vince Maes 804 402 402
Charles McCoy 2,938 725 2,213
Douglas Meer 6,068 3,034 3,034
Maria S. Mingo-Ordonez 211 106 105
Sasha Minor 6,565 2,360 4,205
Terry Niner 3,489 3,489 --
Pamela Osborne 8,588 4,294 4,294
Levi Reep 2,430 885 1,545
Aaron Reid 3,733 2,053 1,680
David Shafer 913 913 --
Irene Sher 1,067 281 786
William Skolout 30,898 30,898 --
Steven Strobel 235 235 --
Roxana Thompson 3,501 1,750 1,751
Brian Thomson 300,968 201,291 99,677
Cynthia Toenjes 894 231 663
Antoine Toffa 547,433 298,716 248,717
Donna Tyacke 4,597 2,837 1,760
Thomas Wilson 25,315 19,474 5,841
Mike Wilson 9,668 2,893 6,775
Alicia Yanik 905 452 453
MediaOne (AT&T) 966,200 966,200 --
Hollinger Digital, Inc. 568,352 568,352 --
John J. Baker 36,258 24,582 11,676
John J. Baker CRUT 24,999 24,999 --
Edward J. Baker Family Trust 36,274 36,274 --
Harriet B. Baker Exempt Trust 12,340 12,340 --
Stephen E. Baker 34,666 22,990 11,676
Peter Sontag 3,108 3,108 --
i:FAO 828,645 414,322 414,323
-------------------------------------------------
Totals 3,654,105 2,749,815 904,290
=================================================
</TABLE>
*Includes shares such persons have the right to acquire within 60 days of
August 31, 2000 pursuant to the exercise of stock options.
October 30, 2000