[Ctrip.com International, Ltd. Announces Completion of Offering of US$1.1 Billion Convertible Senior Notes The 2020 notes will bear interest at a rate of 1.0% per year, payable semiannually in arrears on January 1 and July 1 of each year, beginning on January 1, 2016. The 2020 notes will mature on July 1, 2020, unless previously repurchased or converted in accordance] [CTRIP.COM INTERNATIONAL, LTD. 99 Fu Quan Road Shanghai 200335, People’s Republic of China Form 20-F x o o o CTRIP.COM INTERNATIONAL, LTD. By :]

[Ctrip.com International, Ltd. Prices Offering of US$1.1 Billion Convertible Senior Notes The conversion rate for each of the 2020 notes and the 2025 notes is subject to adjustment upon the occurrence of certain events. Holders of the notes may convert their notes, at their option, in integral multiples of US$1,000 principal amount, at any time prior to the close of] [CTRIP.COM INTERNATIONAL, LTD. 99 Fu Quan Road Shanghai 200335, People’s Republic of China Form 20-F x o o o CTRIP.COM INTERNATIONAL, LTD. By :]

[QuickLinks -- Click here to rapidly navigate through this document Ctrip.com International, Ltd. Announces Proposed Offering of US$1 Billion Convertible Senior Notes SHANGHAI, June 17, 2015 /PRNewswire/—Ctrip.com International, Ltd. (Nasdaq: CTRP), a leading travel service provider of accommodation reservation, transportation ticketing, packaged tours, corporate travel management and other travel-related services in China ("Ctrip" or the "Company"), today announced that it] [QuickLinks -- Click here to rapidly navigate through this document Management's discussion and analysis of financial condition and results of operations Key performance indicators Revenues Revenue Composition and Sources of Revenue Growth. In the first three months of 2015, we generated total revenues of RMB2.4 billion (US$394 million). We generate our revenues primarily from the accommodation reservation and transportation ticketing] [QuickLinks -- Click here to rapidly navigate through this document Ctrip.com International, Ltd. Page Interim condensed consolidated financial statements (unaudited) Unaudited interim condensed consolidated statements of income/(loss) and comprehensive loss for the three-month periods ended March 31, 2014 and 2015 2 Unaudited interim condensed consolidated balance sheets as of December 31, 2014 and March 31, 2015 4 Unaudited interim condensed] [CTRIP.COM INTERNATIONAL, LTD. 99 Fu Quan Road Form 20-F X Form 40-F CTRIP.COM INTERNATIONAL, LTD.]